Journal articles: 'PANI-DBSA'

1

Wei, Pan, Yang Shenglin, Li Guang, and Jiang Jianming. "Hydrogen Bonding Effects on the Electrical Properties and Phase Morphology of Polyaniline Blends." Polymers and Polymer Composites 13, no. 4 (May 2005): 415–23. http://dx.doi.org/10.1177/096739110501300408.

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Blends of dodecylbenzene sulfonic acid-doped polyaniline (PANI-DBSA) with either polyacrylonitrile copolymer (PAN) or polystyrene (PS) were solution cast. The investigation focused on the interaction between the components, the morphology and the resulting electrical conductivity of blends. The results showed that with the same PANI-DBSA content the conductivity of PANI-DBSA/PAN was higher than that of PANI-DBSA/PS. PANI-DBSA was dispersed uniformly in the PAN matrix and its cluster size was rather smaller than in the PS matrix. This is attributed to hydrogen bonding between the carbonyl groups in PAN and the imine groups in PANI, which should lead to better compatibility between PANI-DBSA and PAN.

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Dywili, Nomxolisi R., Afroditi Ntziouni, Chinwe Ikpo, Miranda Ndipingwi, Ntuthuko W. Hlongwa, Anne Yonkeu, Milua Masikini, Konstantinos Kordatos, and Emmanuel I. Iwuoha. "Graphene Oxide Decorated Nanometal-Poly(Anilino-Dodecylbenzene Sulfonic Acid) for Application in High Performance Supercapacitors." Micromachines 10, no. 2 (February 11, 2019): 115. http://dx.doi.org/10.3390/mi10020115.

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Graphene oxide (GO) decorated with silver (Ag), copper (Cu) or platinum (Pt) nanoparticles that are anchored on dodecylbenzene sulfonic acid (DBSA)-doped polyaniline (PANI) were prepared by a simple one-step method and applied as novel materials for high performance supercapacitors. High-resolution transmission electron microscopy (HRTEM) and high-resolution scanning electron microscopy (HRSEM) analyses revealed that a metal-decorated polymer matrix is embedded within the GO sheet. This caused the M/DBSA–PANI (M = Ag, Cu or Pt) particles to adsorb on the surface of the GO sheets, appearing as aggregated dark regions in the HRSEM images. The Fourier transform infrared (FTIR) spectroscopy studies revealed that GO was successfully produced and decorated with Ag, Cu or Pt nanoparticles anchored on DBSA–PANI. This was confirmed by the appearance of the GO signature epoxy C–O vibration band at 1040 cm−1 (which decreased upon the introduction of metal nanoparticle) and the PANI characteristic N–H stretching vibration band at 3144 cm−1 present only in the GO/M/DBSA–PANI systems. The composites were tested for their suitability as supercapacitor materials; and specific capacitance values of 206.4, 192.8 and 227.2 F·g−1 were determined for GO/Ag/DBSA–PANI, GO/Cu/DBSA–PANI and GO/Pt/DBSA–PANI, respectively. The GO/Pt/DBSA–PANI electrode exhibited the best specific capacitance value of the three electrodes and also had twice the specific capacitance value reported for Graphene/MnO2//ACN (113.5 F·g−1). This makes GO/Pt/DBSA–PANI a very promising organic supercapacitor material.

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Yadav, Anju, Ajay Agarwal, Pankaj B. Agarwal, and Parveen Saini. "Ammonia Sensing by PANI-DBSA Based Gas Sensor Exploiting Kelvin Probe Technique." Journal of Nanoparticles 2015 (November 17, 2015): 1–6. http://dx.doi.org/10.1155/2015/842536.

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Dodecyl benzene sulfonic acid (DBSA) doped polyaniline (PANI-DBSA) has been synthesized by chemical oxidative polymerization of aniline monomer in the presence of DBSA. The UV-visible spectroscopy and X-ray diffraction measurements confirm the formation of PANI and its doping by DBSA. SEM images show the formation of submicron size rod shaped PANI particles. A vibrating capacitor based ammonia gas sensor was prepared by spin coating PANI-DBSA film over copper (Cu) substrate. The sensor exploited Kelvin probe technique to monitor contact potential difference between PANI and Cu as a function of time and ammonia concentration. Upon exposure to 30 ppm ammonia, the sensor displays response time of 329 s, recovery time of 3600 s, and sensitivity value of 1.54 along with good repeatability.

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4

Pan, Wei, Xiao Wei He, and Yan Chen. "Preparation and Characterization of Polyacrylonitrile-Polyaniline Blend Nanofibers." Applied Mechanics and Materials 44-47 (December 2010): 2195–98. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2195.

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Composite nanofibers of polyaniline doped with dodecylbenzene sulfonic acid (PANI-DBSA) and polyacrylonitrile (PAN) were prepared via an electrospinning process. The surface morphology of PANI-DBSA/PAN nanoﬁbers was characterized using scanning electron microscopy (SEM). Differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR) were used to investigate the hydrogen bonding and miscibility behavior of the blend. It was found that the average fiber diameter of composites nanofiber was increased with the increase of PANI-DBSA content. The formation of the hydrogen bonding between PAN and PANI-DBSA was identified by the FTIR spectra

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5

Wang, Xiao Hua. "Properties of Polyaniline with the Doping of Different Acid." Advanced Materials Research 502 (April 2012): 31–35. http://dx.doi.org/10.4028/www.scientific.net/amr.502.31.

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Polyaniline(PANI) with the doping of hydrochloride(HC1), aminosulfonic acid (NH2SO3H) or dodecylbenzenesulfonic acid(DBSA) was prepared by in-situ polymerization. Effects of acid content, reaction time, oxidant ammonium persulfate (APS) dosage and reaction temperature on the conductivity of PANI were studied. The resistance and thermal stability of them were compared. Results show that the largest conductivity of HC1-PANI is 1.98 s.cm-1 among them in case the C(HC1)=0.5mol/L, reaction time is 6.0h, n(APS/aniline)=1.0; The conductivity of NH2SO3H-PANI is 0.2s.cm-1 in case the C(NH2SO3H)=1.0mol/L, reaction time is 6.0h, n(APS/aniline)=2.0; The conductivity of DBSA-PANI is 0.98s.cm-1 in case the C(DBSA)=1.0 mol/L, reaction time is 8.0h, n(APS/aniline) = 2.0. The the least resistance of HC1-PANI is 10Ω, and that of NH2SO3H- PANI is the largest of 120Ω. The order of their thermal stability is DBSA-PANI > NH2SO3H-PANI > HC1-PANI before 350°C, that of their thermal stability is inverse when it reaches 350°C.

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Zhang, Wang Xi. "Characterization of Polyvinyl Alcohol-Polyaniline Blend Films." Applied Mechanics and Materials 44-47 (December 2010): 2191–94. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2191.

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In this study a solution-blend method is adopted to prepare conductive polyvinyl alcohol (PVA) and polyaniline doped with dodecyl benzene sulfonic acid (PVA/PANI-DBSA) blend films. Emeraldine base (EB)-type polyaniline (PANI) is dissolved in N-methyl-2-pyrrolidinone (NMP) and then blended with PVA/dodecyl benzene sulfonic acid (DBSA) solution by various amounts. The morphological structures and characterized of the films were observed via scanning electronic microscopy (SEM), thermogravimetric analysis (TGA) and X-ray powder diffraction (XRD). Electrical properties of the blends were characterized by means of electrical conductivity measurements. It is found that the electrical conductivity and the thermal degradation onset temperature of the PVA/PANI-DBSA blend film are increased as the amount of PANI-DBSA is increased.

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7

Xu, Jun, Sheng Ren, Yao Wu, Jian Gang Li, Mei Li, and Ying Guo. "Preparation and Characterisation of Polyaniline Grafted Multiwalled Carbon Nanotubes/Epoxy Composite." Advanced Materials Research 194-196 (February 2011): 1510–15. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1510.

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Dodecyl benzene sulfonic acid (DBSA) doped polyaniline (PANI) grafted MWNTs (PANI-g-MWNTs)/Epoxy composite were prepared by aniline in situ polymerization in the presence of phenylamine groups contained MWNTs followed by solution blending and mould casting. Phenylamine groups grafted on the surface of MWNTs via amide bond join in the in situ polymerization and MWNTs are encapsulated by PANI coatings forming a core (MWNTs)-shell (PANI) nano-structure. DBSA doped PANI coatings swell in tetrahydrofuran (THF) and core-shell nano-structures are stabilized in epoxy solution, which is in favor of MWNTs dispersion in epoxy resin and formation of a homogenous MWNTs/Epoxy composite. After DBSA doped PANI-g-MWNTs are introduced in Epoxy, initial curing and exothermic peak temperatures as well as curing reaction enthalpy decrease, which indicates addition of DBSA doped PANI-g-MWNTs promotes curing reaction of Epoxy. Tensile strength, Young’s modulus, elongation at break, flexural strength and flexural modulus of the composite are improved by 71.7%, 42.3%, 99.8%, 55.01% and 39.86% compared with Epoxy, respectively.

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8

Chen, Zheng, Rui Qi Li, and Qing Guo. "Synthesis and Characterization of Polyaniline Conductive Composite Films." Applied Mechanics and Materials 217-219 (November 2012): 1166–69. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1166.

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Conductive polyaniline(PANI) was synthesized by chemical oxidative copolymerization , using dodecylbenzene sulfonic acid (DBSA)as doping agent. PANI-DBSA/ABS conductive films were obtained by solution blending method, using chloroform as organic solvents. The products were characterized by means of digital four-point probe meter, FT-IR spectroscopy, thermal gravimetric analysis (TGA) and inverted metallurgical microscope. The results indicate that PANI-DBSA has good solubility because dodecylbenzene sulfonic acid (DBSA) plays a good doping role in polyaniline. Composite films’ electric conductivity improves with the increasing content of PANI and the percolation threshold is about 10wt% when conducting network formed. TGA curves demonstrate that product’s glass transition temperature is much higher than acrylonitrile-butadiene-styrene resin, furthermore, the thermal stability of composite films also improves compared with polyaniline or resin.

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9

Long, Yunze, Zhaojia Chen, Nanlin Wang, Junchao Li, and Meixiang Wan. "Electronic transport in PANI-CSA/PANI-DBSA polyblends." Physica B: Condensed Matter 344, no. 1-4 (February 2004): 82–87. http://dx.doi.org/10.1016/j.physb.2003.09.245.

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10

Kumar, V., T. Yokozeki, T. Goto, and T. Takahashi. "Synthesis and characterization of PANI-DBSA/DVB composite using roll-milled PANI-DBSA complex." Polymer 86 (March 2016): 129–37. http://dx.doi.org/10.1016/j.polymer.2016.01.054.

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11

Liu, Ying, Qi Wen, Jia Li Guan, Shi Jie Zhao, Qi Xing Hu, Zhi Feng Hou, and Qiao Zhen Yu. "Structure-Property Relationship of Dodecylbenzenesulfonic Acid Doped Polyaniline." Advanced Materials Research 721 (July 2013): 199–205. http://dx.doi.org/10.4028/www.scientific.net/amr.721.199.

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Dodecylbenzenesulfonic acid (DBSA) doped polypanilines (PANIs) were chemically synthesized in different molar ratios of aniline (An) to ammonium persulfate (APS) and An to DBSA. The microstructures of these PANIs were investigated by means of scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier Transform Infrared (FTIR). UV-Vis spectrometer, semiconductor parameter analyzer, ubbelohde viscometer and electrospinning technique were used to characterize the optical, electrical properties, viscosity and solubility of these PANIs. The results show that the molar rations of An to APS and An to DBSA had strong effect on the microstructure, molecular weight, degree of crystallinity, optical property, solubility and conductivity of obtained DBSA doped PANI. With the increase of the molar ratios of An to APS and An to DBSA, the conductivities and molecular weight of DBSA doped PANIs decreased, while the degree of crystallinity and solubility of DBSA doped PANIs increased. The DBSA doped PANI could dissolve in dichloromethane or HFIP and could be fabricated short fibers by electrospinning. Moreover, the solution of DBSA doped PANIs in concentrated sulphuric acid showed liquid crystal property.

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12

Kumar, Vipin, Sukanta Das, and Tomohiro Yokozeki. "Frequency independent AC electrical conductivity and dielectric properties of polyaniline-based conductive thermosetting composite." Journal of Polymer Engineering 38, no. 10 (November 27, 2018): 955–61. http://dx.doi.org/10.1515/polyeng-2018-0031.

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Abstract Electrical impedance characteristics of polyaniline (PANI)-dodecylbenzenesulfonic acid (DBSA)/divinylbenzene (DVB) composite were evaluated as a function of PANI content in the frequency range of 102–108 Hz. Polymer composites were prepared by a one-step thermal process where doping of the PANI and curing of the polymer matrix DVB have occurred simultaneously in the presence of a strong protonic acid, i.e. DBSA. The alternating current (AC) conductivity value with respect to frequency of the PANI-DBSA/DVB composite shows a direct current (DC) plateau up to an extensive frequency range. Almost metal-like behavior is obtained with such highly conductive plastic material. In all frequency regions, composites with higher PANI concentration showed a frequency independent behavior, while in the case of neat composites without PANI, a frequency dependent behavior is observed. A plot of the real part of complex impedance vs. frequency and a plot of AC conductivity of the composites indicate that the high electrical conductivity in high PANI concentration composites is because of the direct contacts between filler PANI particles. In this work, AC conductivity behavior and dielectric properties of very highly conductive thermoset composites are presented, and it is shown that conductivity is frequency independent for a very high frequency range (up to 108 Hz).

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13

Wang, Xiao Hua. "Conductivity of PANI-PVA Composite Conductive Coatings with the Doping of Different Acid." Advanced Materials Research 502 (April 2012): 23–27. http://dx.doi.org/10.4028/www.scientific.net/amr.502.23.

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The PANI-PVA composite conductive coatings adopt PVA as the base material together with the doping of hydrochloride (HCl), dodecylbenzenesulfonic acid (DBSA), the aminosulfonic acid (NH2SO3H ) aqueous solution were prepared. The influences of PVA content, acid content, oxidant content, reaction time and drying temperature of film on the conductivity of coating film were studied. The result shows that the conductivity of HCl-PANI-PVA coating film is the highest among them in case the PVA content is 40% and the drying temperature of film is 80°C. The maximum conductivity of HCl-PANI-PVA coating film is 15.0S/cm in case the C(HC1)=0.5mol/L, the reaction time is 6 hours and the n(APS/An)=1.0; the maximum conductivity of DBSA-PANI-PVA coating film is 7.1S/cm in case the C(DBSA)=1.0mol/L, the reaction time is 8 hours and the n(APS/An)=2.0; the maximum conductivity of NH2SO3H-PANI-PVA coating film is 2.0 S/cm in case the C(NH2SO3H)=1.0mol/L, the reaction time is 6 hours and the n(APS/An)=2.0.

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14

Zhang, Hui Qin. "Characterization of Electrospun Poly(Lactic Acid)/polyaniline Blend Nanofibers." Advanced Materials Research 332-334 (September 2011): 317–20. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.317.

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In this study, composite nanofibers of polyaniline doped with dodecylbenzene sulfonic acid (PANI-DBSA) and Poly(lactic acid) (PLA) were prepared via an electrospinning process. The surface morphology, thermal properties and crystal structure of PLA/PANI-DBSA nanoﬁbers are characterized using Fourier transform infrared spectroscopy (FT-IR), wide-angle x-ray diffraction (WAXD) and scanning electron microscopy (SEM). SEM images showed that the morphology and diameter of the nanofibers were affected by the weight ratio of blend solution.

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15

Wang, Xiu Lian, and Liu Xue Zhang. "Morphology and Mechanical Properties of the Polyurethane/PANI-DBSA Blend Nanofibers by the Electrospinning Technique." Advanced Materials Research 651 (January 2013): 87–90. http://dx.doi.org/10.4028/www.scientific.net/amr.651.87.

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In this study, composite nanofibers of polyaniline doped with dodecylbenzene sulfonic acid (PANI-DBSA) and polyurethane (PU) were prepared via an electrospinning process. The morphology, diameter, and structure of the electrospun nanofibers were investigated. SEM images showed that the morphology and diameter of the nanofibers were mainly affected by the weight ratio of the blend. The average diameter of the nanofibers was 370–1620 nm. The diameter gradually decreased with increasing PANI-DBSA content in the blend, and more beads were obtained in the composite.

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16

Yan, Taohai, Jinhua Jiang, and Nanliang Chen. "Effects of Dopant Types and Contents on Morphology and Strength Properties of PANI/PAN Electrospun Nanofibers." MATEC Web of Conferences 237 (2018): 02016. http://dx.doi.org/10.1051/matecconf/201823702016.

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In this paper, the electrospinning of polyaniline under different dopant conditions were studied, the experimental phenomena was introduced, analyzed the relationship between the nanofiber surface morphology of DBSA-PANI/PAN, HCl-PANI/PAN and PTSA-PANI/PAN membranes and dopant type and content. The average diameter of DBSA-PANI/PAN electrospinning fiber membrane showed a decreasing trend when the content of doped polyaniline increased 1%-4%, and reached a minimum value of 780nm when the concentration was 4%. The strength of DBSA-PANI/PAN fiber membrane was the highest when the concentration of doped polyaniline was 1%, and the maximum intensity was 1.8×10 5 Pa. The average diameter of HCl/PANI/PAN fiber membranes decreases with the increase of doped polyaniline concentration, and it fluctuates up and down within a small range. When the content of doped polyaniline was increased to 4%, the average fiber diameter reached a minimum of 420 nm. The strength of the HCl-PANI/PAN fiber membrane was the highest when the concentration of doped polyaniline was 4%, and the maximum intensity was 1.08×10 5 Pa. The average diameter of the PTSA-PANI/PAN electrospun fiber membrane was the smallest at 2% doped polyaniline content and was 430 nm, the strength of PTSA-PANI/PAN fiber membrane is the highest when the content of doped polyaniline is 2%, and the maximum intensity is 3.9×10 4 Pa. In this paper, the basic research of doped polyaniline electrospinning nanofibers has made a useful supplement to the existing research of polyaniline nanofibers, and has a reference value for the application of polyaniline.

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17

Biscaro, Rogério S., Edson C. Botelho, Marta F. K. Takahashi, Roselena Faez, and Mirabel C. Rezende. "Estudo Reológico de Tintas de Poliuretano Contendo PAni-DBSA Aplicadas como Materiais Absorvedores de Microondas (8-12 GHz)." Polímeros 12, no. 4 (October 2002): 318–27. http://dx.doi.org/10.1590/s0104-14282002000400016.

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Neste trabalho preparou-se tintas condutoras baseadas em blendas de poliuretano contendo polianilina em diferentes proporções. Estudou-se as influências do método de dopagem da polianilina (PAni) e do tempo de processamento da mistura no comportamento reológico da tinta. Verificou-se que a dopagem, com o ácido dodecilbenzeno sulfônico (DBSA), por processamento reativo (PAni-DBSA-pr) afetou, de maneira mais acentuada, a viscosidade da tinta devido, principalmente, ao excesso de ácido dopante presente nessa amostra. Esse efeito foi observado pelas análises reológicas devido às alterações nos valores de viscosidade complexa, controlando-se o tempo de repouso das misturas. Medidas espectrofotométricas na região do infravermelho foram realizadas para verificar a ocorrência de interações entre os componentes da mistura (o poliuretano e a polianilina), constatando-se que, possivelmente, não ocorreram ligações químicas, mas somente interações físicas. Observou-se também que, amostras contendo 15% (m/m) de PAni-DBSA-pr absorveram aproximadamente 48% da radiação eletromagnética incidente (8-12 GHz), indicando a viabilidade do uso desta tinta como material absorvedor de radiação.

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18

Faez, R., I. M. Martin, M. A. De Paoli, and M. C. Rezende. "Microwave properties of EPDM/PAni-DBSA blends." Synthetic Metals 119, no. 1-3 (March 2001): 435–36. http://dx.doi.org/10.1016/s0379-6779(00)01283-2.

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19

Carinhana, D., R. Faez, A. F. Nogueira, and M. A. De Paoli. "Photoelectrochemical properties of PAni-DBSA/EPDM blends." Synthetic Metals 121, no. 1-3 (March 2001): 1569–70. http://dx.doi.org/10.1016/s0379-6779(00)01290-x.

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20

Galiani, Patrini D., José A. Malmonge, Daniela P. dos Santos, and Luiz F. Malmonge. "Compósitos de borracha natural com polianilina." Polímeros 17, no. 2 (June 2007): 93–97. http://dx.doi.org/10.1590/s0104-14282007000200007.

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Compósitos de borracha natural (Hevea brasiliensis)-BN/polianilina - PANI, com diferentes composições foram obtidos através da polimerização por emulsão do monômero anilina na presença da BN e do ácido dodecilbenzeno sulfônico (DBSA). Filmes finos e homogêneos foram obtidos por prensagem a quente. Os compósitos foram caracterizados por condutividade elétrica, FTIR, UV-vis-NIR, DSC e difração de raios X. Compósito com condutividade elétrica cerca de 14 ordens de grandeza maior que a BN foi obtido. Este alto valor de condutividade é atribuído à formação da PANI no estado dopado no compósito, que foi verificado através das técnicas de UV-vis-NIR e FTIR. Os resultados obtidos com a técnica de DSC e difratometria de raios X indicaram que os polímeros são imiscíveis e que a presença da borracha não altera significantemente a fase cristalina da PANI-DBSA no compósito.

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Wang, Weijie, Suping Sun, Shijia Gu, Hongwei Shen, Qihao Zhang, Juanjuan Zhu, Lianjun Wang, and Wan Jiang. "One-pot fabrication and thermoelectric properties of Ag nanoparticles–polyaniline hybrid nanocomposites." RSC Adv. 4, no. 51 (2014): 26810–16. http://dx.doi.org/10.1039/c4ra02136c.

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In this context, a one-pot and in situ strategy for fabrication of AgNPs (Ag nanoparticles)/PANI (polyaniline) nanocomposites in a micellar solution of dodecylbenzene sulfonic acid (DBSA, anionic surfactant) is introduced.

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Mikhaylov, S., N. A. Ogurtsov, N. Redon, P. Coddeville, J. L. Wojkiewicz, and A. A. Pud. "The PANI-DBSA content and dispersing solvent as influencing parameters in sensing performances of TiO2/PANI-DBSA hybrid nanocomposites to ammonia." RSC Advances 6, no. 86 (2016): 82625–34. http://dx.doi.org/10.1039/c6ra12693f.

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23

Zhao, Yun, Jiangquan Ma, Kun Chen, Chuandong Zhang, Chao Yao, Shixiang Zuo, and Yong Kong. "One-Pot Preparation of Graphene-Based Polyaniline Conductive Nanocomposites for Anticorrosion Coatings." Nano 12, no. 05 (March 9, 2017): 1750056. http://dx.doi.org/10.1142/s1793292017500564.

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Graphene-based polyaniline (PANI/RGO), used as conductive filler, was synthesized through a new one-pot emulsion polymerization technology. Graphene dispersion (RGO) was obtained by ultrasonically reducing graphene oxide (GO) in a hot sodium hydroxide solution in the absence of any toxic reductant, such as hydrazine hydrate. Sodium dodecyl benzene sulfonate (SDBS), in which RGO sheets were dispersed, was synthesized using dodecyl benzenesulfonic acid (DBSA) and NaOH. In this RGO/SDBS mixture, polyaniline (PANI), doped with multiple acids (HCl-DBSA), was then uniformly polymerized on the surface of the RGO sheets. The experimental results showed that this reaction improved the dispersion of the RGO in the PANI system, and increased the homogeneous distribution of the formed PANI particles on the RGO surface. The synthesized composite material (PANI/RGO) had good thermal stability, electrical conductivity (about 11.71[Formula: see text]S[Formula: see text][Formula: see text][Formula: see text]cm[Formula: see text] and water dispersibility. Based on its excellent properties, the PANI/RGO was combined with waterborne epoxy resin to prepare anticorrosion coatings. The corrosion resistance of these coatings was studied using Tafel plots, along with other critical properties tested by the national standards. The results suggested that the surface resistivity of the coatings could be as high as 2.48[Formula: see text][Formula: see text][Formula: see text]10[Formula: see text] with the addition around 3[Formula: see text]wt.% of the PANI/RGO meeting good antistatic standards. In addition, the antistatic coatings had outstanding corrosion resistance, as well as tremendous physical and chemical properties.

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Faez, Roselena, Inácio M. Martin, Mirabel C. Rezende, and Marco-Aurélio De Paoli. "Acompanhamento do Processamento de Elastômeros Condutores por Microscopia Eletrônica de Varredura." Polímeros 11, no. 3 (September 2001): 121–25. http://dx.doi.org/10.1590/s0104-14282001000300011.

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Neste trabalho, o elastômero EPDM foi misturado à Polianilina (PAni) a qual foi dopada com ácido dodecilbenzeno sulfônico (DBSA) na razão molar 1:3. A mistura de EPDM contendo 40%(m/m) de PAni-(DBSA)3 foi realizada em um misturador interno de dois rotores, acessório do reômetro Haake Rheocord 90, a 150°C e 30 rpm. Foram recolhidas amostras em 5, 10, 20, 30 e 40 min de processamento e a morfologia foi avaliada por MEV. A análise microscópica da superfície da amostra mostrou fases completamente distintas em função do tempo de mistura, passando de uma estrutura de duas fases compacta (5 min) até o aparecimento de uma estrutura "tipo esponja" (30 e 40 min). Estas diferenças afetam as propriedades do material como, por exemplo, o comportamento de absorção de radiação eletromagnética de materiais absorvedores de radiação (MARE).

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25

Lakshmidevi, Venkatappa, Chennabasaveshwara V. Yelamaggad, and Abbaraju Venkataraman. "Studies on Fluorescence Quenching of DBSA-PANI-Employing Nitroaromatics." ChemistrySelect 3, no. 9 (March 6, 2018): 2655–64. http://dx.doi.org/10.1002/slct.201702992.

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Ashokan, S., V. Ponnuswamy, and P. Jayamurugan. "Synthesis and characterization of CuO nanoparticles, DBSA doped PANI and PANI/DBSA/CuO hybrid composites for diode and solar cell device development." Journal of Alloys and Compounds 646 (October 2015): 40–48. http://dx.doi.org/10.1016/j.jallcom.2015.05.088.

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27

Xu, Na, Xiao Dong Shen, and Sheng Cui. "Synthesis and Characterization of Polyaniline Film." Advanced Materials Research 239-242 (May 2011): 1382–85. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.1382.

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The electrochromic PANI film was prepared by emulsion polymerization with dodecyl benzene sulphonic acid (DBSA) as dopant and ammonium persulfate (APS) as initiator. Ultrasonic dispersion was adopted in the polymerization. The electrochemical properties, the surface morphology and structure of the prepared PANI film was characterized by means of Fourier Transform infrared spectroscopy (FT-IR), cyclic voltammograms (CV) and field emission scanning electron microscope (FE-SEM), respectively. The relationship between the morphology and properties of PANI film was detailedly discussed. The PANI film exhibited an excellent electrochromism with reversible color changes form yellow to purple. The PANI film also had quite good reaction kinetics with fast switching speed, and the response time for oxidation and reduction were 65 ms and 66 ms, respectively.

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Niranjana, M., L. Yesappa, S. P. Ashokkumar, H. Vijeth, S. Raghu, and H. Devendrappa. "Localized polarons in in situ synthesized polyaniline nanocomposite improve the morphology and the thermal and electrical conductivity." RSC Advances 6, no. 116 (2016): 115074–84. http://dx.doi.org/10.1039/c6ra24137a.

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This paper reports the localized polarons improves the morphology, thermal and electrical conductivity of dodecyl benzene sulfonic acid (DBSA) surfactant based polyaniline (PANI) – cobalt oxide (Co₃O₄) nano have synthesized by using in situ chemical reaction method.

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Shan, Qiu Ju, Hai Rui Zhang, Ji Xiao Wang, Zhi Wang, and Shi Chang Wang. "Preparation and Capacitive Properties of Polyaniline/Au Film." Advanced Materials Research 668 (March 2013): 231–35. http://dx.doi.org/10.4028/www.scientific.net/amr.668.231.

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Polyaniline (PANI) doped with dodecylbenzene sulfonic acid (DBSA) was synthesized by chemical polymerization method, which was dissolved in toluene to prepare the casting solution (PANI, 0.20% w/w). Before casting the prepared solution on the surface of PET to form PANI films, Au was sprayed onto the PET film. The morphology of the obtained PANI/Au films was characterized by field-emission scanning electron microscopy (FE-SEM). The capacitive performance was characterized by cyclic voltammetry and galvanostatic charge-discharge technique in H2SO4 electrolyte under various conditions. The experimental results show that the specific capacitance of the prepared PANI/Au film can reach 280 Fg-1 in 0.50 M H2SO4 electrolyte within the potential range from 0.000 to 0.650 V vs. SCE. The obtained PANI/Au film has extremely high stability which has no obvious decrease for 30000 cycles.

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Zhu, Xu Fei, Long Fei Jiang, Wei Xing Qi, Chao Lu, and Ye Song. "Thermal Stability of Solid Aluminum Electrolytic Capacitors with Conductive Polyaniline Counter Electrode." Advanced Materials Research 512-515 (May 2012): 1018–21. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1018.

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To overcome the risk of electrolyte leakage and the shortcoming of higher impedance at high frequencies for the conventional aluminum electrolytic capacitor impregnated with electrolyte solutions, solid aluminum electrolytic capacitor employing conducting polyaniline (PANI) as a counter electrode was developed. The as-fabricated solid capacitors have very low impedances at high frequencies and excellent thermal stability. The superior performances can be ascribed to high conductivity and good thermal stability of the camphorsulfonic acid (CSA)-dodecylbenzenesulfonic acid (DBSA) co-doped PANI.

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31

Wang, Xiang-Qin, Bin-Jie Xin, and Jian Xu. "Preparation of Conductive PANI/PVA Composites via an Emulsion Route." International Journal of Polymer Science 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/903806.

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A facile and novel strategy for preparing polyaniline/polyvinyl alcohol (PANI/PVA) composite emulsion is reported wherein the reaction is carried out via the emulsion polymerization using ammonium peroxydisulfate (APS) as the oxidizing agent and dodecylbenzene sulfonic acid (DBSA) as the protonic acid. The PANI/PVA composite membranes have been characterized using optical microscope, scanning electron microscope (SEM), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and electrochemical workstation. It is interesting that the electrical conductivity of the PANI/PVA composites is estimated to be as high as 1.28 S/cm. The experimental results show that the surface of PANI/PVA composite membranes exhibits good integrity. The PANI particles at the nanoscale are dispersed in the PVA matrix, and the electrochromic behaviors of PANI/PVA composites obtained at different polymerization temperatures can be compared based on cyclic voltammetry (CV) curves, revealing that PANI/PVA composites synthesized at room temperature are better than those synthesized at low temperature.

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Deng, Si Si, and Guang Li. "Preparation and Characterization of Polyaniline / Montmorillonite Composite by Situ Emulsion Polymerization." Advanced Materials Research 476-478 (February 2012): 809–13. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.809.

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Polyaniline(PANI)/montmorillonite(MMT)composites were prepared by situ emulsion polymerization of aniline at 0 °C in the presence of MMT in aqueous solution with ammonium persulfate (APS) and dodecylbenzene sulfonic acid (DBSA) as oxidant and surfactant (acid dopant), respectively. Infrared spectra revealed the shift of N-B-N stretching vibration band, suggesting the presence of interfacial interactions between PANI chains and clay layers. X-ray diffraction showed an increase in the interlayer spacing from 1.26 nm for MMT to 1.468nm for PANI/MMT10%, signifying PANI was intercalated into the MMT galleries and the expansion is in agreement with the intercalation of single chains with extended chain conformation. Thermal gravimetric analysis suggested that the introduction of MMT clay resulted in improvement of thermal stability of the composites. It was found that when the MMT content reached a certain limit (30%), the PANI/MMT showed higher conductivity than pristine PANI .

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Zhang, Q. H., X. H. Wang, D. J. Chen, and X. B. Jing. "Dynamic mechanical properties of melt processable PANI-DBSA/LDPE Blends." Synthetic Metals 135-136 (April 2003): 481–82. http://dx.doi.org/10.1016/s0379-6779(02)00699-9.

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Atifi, Siham, and Wadood Y. Hamad. "Emulsion-polymerized flexible semi-conducting CNCs–PANI–DBSA nanocomposite films." RSC Advances 6, no. 70 (2016): 65494–503. http://dx.doi.org/10.1039/c6ra13610a.

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Pan, Wei. "Thermal behavior and rheological properties of PANI-DBSA/PAN blends." Journal of Wuhan University of Technology-Mater. Sci. Ed. 22, no. 1 (February 2007): 153–55. http://dx.doi.org/10.1007/s11595-005-1153-8.

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Wei, Li, Qi Chen, and Yingjun Gu. "Effects of inorganic acid in DBSA-PANI polymerization on transparent PANI-SiO2 hybrid conducting films." Journal of Alloys and Compounds 501, no. 2 (July 2010): 313–16. http://dx.doi.org/10.1016/j.jallcom.2010.04.094.

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37

da Silva, David C., Ana Paula Lemes, Lilia M. Guerrini, and Fernando H. Cristovan. "Preparation and Characterization of Blends of Polyaniline with Poly(Hydroxybutyrate-Co-Valerate)." MRS Proceedings 1498 (2013): 115–20. http://dx.doi.org/10.1557/opl.2013.57.

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ABSTRACTIn this study the PANI/PHBV blends were prepared and thermal properties, crystallization behavior, microstructure of the blends were investigated. The PANI/PHBV blends were prepared by dissolution of PANI (emeraldine base doped with dodecylbenzenesulphonic acid, DBSA) and PHBV in chloroform and films were obtained by casting. PANI amount in the blend was varied from 0.1 to 1% wt. PANI/PHBV blends were characterized by FTIR spectroscopy and the thermal behavior were analyzed by differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA). FTIR spectra of the pure PHBV and PANI/PHBV blend had similar peaks. However, blends spectra show an enlargement of bands, due interaction of the chain PANI with PHBV matrix. The crystallization behaviors were investigated using DSC, with at a scanning rate of 10oCmin−1. Curve of pure PHBV showed two melting peaks (159.1°C and 172.3°C). With the increase of PANI amount in the PHBV matrix, both of the melting peaks became wider and shifted to lower temperatures. The decrease trend of first and second melting points with increase of PANI amount, suggests a reduction in the crystallinity of the blends.

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38

Wang, Xiao Hua. "Mechanical Property and Conductivity of Polyaniline-Poly(Vinyl Alcohol)Composite Films." Advanced Materials Research 502 (April 2012): 297–301. http://dx.doi.org/10.4028/www.scientific.net/amr.502.297.

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The polyaniline(PANI)-poly(vinyl alcoho1)(PVA) composite films with the doping of hydrochloride (HCl), dodecylbenzenesulfonic acid (DBSA) or aminosulfonic acid (NH2SO3H ) were prepared by in-situ polymerization. Effects of PVA content, HC1 content, oxidant ammonium persulfate(APS)dosage, reaction time and film drying temperature on tensile strength of the HCl-PANI-PVA composite film were studied. The conductivity of PANI-PVA composite film with the doping of HCl is the highest of 13.2S.cm-1 among them. The tensile strength of the film is improved greatly due to effective mixture of PANI and PVA. The tensile strength of the composite film substantially depended upon the mass fraction of PVA. The tensile strength of the HC1-PANI-PVA composite film reaches the maximum of 60.8 MPa, in case the PVA content is 40%, the C(HC1)=1.0 mol/L，reaction time is 4.0 h, the n(APS/An)=1.0, and film drying temperature is 80°C.

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39

Li, Chen, Yan Hong Tian, and Xue Jun Zhang. "Effect of Zinc Ion on the Electrochemical and Thermal Performance of Polyaniline/Activated Carbon Composites Prepared by In Situ Emulsion Polymerization." Advanced Materials Research 721 (July 2013): 8–11. http://dx.doi.org/10.4028/www.scientific.net/amr.721.8.

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Using dodecyl benzenesulfonic acid (DBSA) as surfactant, composites of polyaniline (PANI)/activated carbon (AC) with core-shell structures were prepared by in situ emulsion polymerization in the presence of different concentrations of zinc ion. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) analysis and Fourier-transform IR (FT-IR) spectroscopy were used to analyze morphologies and structures of the composites. Thermal stability of the composites was investigated by thermogravimetric analysis (TGA).The electrochemical properties of PANI/AC composites were studied by galvanostatic charge/discharge tests. The composites exhibited different electrochemical and thermal behavior, which was found to be a function of the concentration of zinc ion.

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40

Machado, D. S., S. R. Moraes, and A. J. Motheo. "Aspects of the Chemical Synthesis of PAni-DBSA and its Properties." Molecular Crystals and Liquid Crystals 447, no. 1 (May 2006): 215/[533]—222/[540]. http://dx.doi.org/10.1080/15421400500377214.

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41

Shehzad, Khurram, Asad Ul-Haq, Shahabaz Ahmad, Muhamamd Mumtaz, Tajamal Hussain, Adnan Mujahid, Asma Tufail Shah, et al. "All-organic PANI–DBSA/PVDF dielectric composites with unique electrical properties." Journal of Materials Science 48, no. 10 (January 30, 2013): 3737–44. http://dx.doi.org/10.1007/s10853-013-7172-5.

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42

Pattananuwat, Prasit, and Duangdao Aht-Ong. "Electrochemical Synthesis of Sensitive Layer of Polyaniline: Effects of Acid Doping on Ethylene Gas Sensing." Materials Science Forum 654-656 (June 2010): 2285–88. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.2285.

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Ethylene gas is released from plants as a hormone during a certain stage of life cycle and induces ripeness in fruits and blooming of flowers. The early detection and control amount of ethylene gas in storage can prevent wastage of the entire stock. The aims of this research were to fabricate ethylene sensor based on polyaniline (PANi) and to investigate the effect of acid doping on an improvement of its sensitivity. Electrochemically synthesized conductive layer of PANi was prepared via an in situ radical polymerization by repeating potential cycling in the range of -0.3 to 1.0 V relative to the silver reference electrode and platinum counter electrode. The PANi films were deposited on interdigitated electrode of gold substrate. These emeraldine bases of PANi were doped with five different acids doping (such as HCl, H2SO4, H3PO4, TSA, and DBSA) at particular concentration. The influences of types and amount of acid on the sensitivity of acid doping PANi on ethylene gas were investigated. The PANi-dope films were characterized by Fourier transform infrared spectroscopy (FT-IR) and UV-visible spectroscopy (UV-vis). The morphology of PANi film was investigated by scanning electron microscope (SEM). The magnitude sensing of doping PANi in terms of types and amount of acid against ethylene gas was presented. Introduction

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43

Jianming, Jiang, Pan Wei, Yang Shenglin, and Li Guang. "Electrically conductive PANI-DBSA/Co-PAN composite fibers prepared by wet spinning." Synthetic Metals 149, no. 2-3 (March 2005): 181–86. http://dx.doi.org/10.1016/j.synthmet.2004.12.008.

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44

Costa, L. C., C. P. L. Rubinger, and C. R. Martins. "Dielectric and morphological properties of PAni-DBSA blended with polystyrene sulfonic acid." Synthetic Metals 157, no. 22-23 (November 2007): 945–50. http://dx.doi.org/10.1016/j.synthmet.2007.09.005.

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45

Bilal, Salma, Ayesha Akbar, and Anwar-ul-Haq Ali Shah. "Highly Selective and Reproducible Electrochemical Sensing of Ascorbic Acid Through a Conductive Polymer Coated Electrode." Polymers 11, no. 8 (August 13, 2019): 1346. http://dx.doi.org/10.3390/polym11081346.

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The surface of an Au-disc electrode was modified through electro polymerization of aniline, in the presence of dodecyl benzene sulphonic acid (DBSA) and sulphuric acid (H2SO4) solution. The polymerization conditions were pre-optimized so that micelle formation and solution coagulation could be minimized and surfactant doped polyaniline film could be obtained through a quick, simple and one step polymerization route. The synthesized material was characterized via Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and cyclic voltammetry (CV). The effective surface area of the Au-disc, calculated through cyclic voltammetry, was immensely increased through a polyaniline (PANI) coating (0.04 and 0.11 cm2 for bare and PANI coated gold respectively). The modified electrode was utilized for ascorbic acid (AA) sensing. The changing pH of electrolyte and scan rate influenced the PANI electrode response towards AA. The modified electrode was highly selective towards AA oxidation and showed a very low limit of detection i.e. 0.0267 μmol·L–1. Moreover, the PANI coating greatly reduced the sensing potential for AA by a value of around 140 mV when compared to that on a bare gold electrode.

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46

Morsi, I., Sh Ebrahim, and M. Soliman. "Construction and Study of Hetreojunction Solar Cell Based on Dodecylbenzene Sulfonic Acid-Doped Polyaniline/n-Si." International Journal of Photoenergy 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/917020.

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Polyaniline/n-type Si heterojunctions solar cell are fabricated by spin coating of soluble dodecylbenzene sulfonic acid (DBSA)-doped polyaniline onto n-type Si substrate. The electrical characterization of the Al/n-type Si/polyaniline/Au (Ag) structure was investigated by using current-voltage (I-V), capacitance-voltage (C-V), and impedance spectroscopy under darkness and illumination. The photovoltaic cell parameters, that is, open-circuit voltage (Voc), short-circuit current density (Jsc), fill factor (FF), and energy conversion efficiency (η) were calculated. The highestJsc,Voc, and efficiency of these heterojunctions obtained using PANI-DBSA as a window layer (wideband gap) and Au as front contact are 1.8 mA/cm2, 0.436 V, and 0.13%, respectively. From Mott-Schottky plots, it was found that order of charge carrier concentrations is3.5×1014and1.0×1015/cm3for the heterojunctions using Au as front contact under darknessness and illumination, respectively. Impedance study of this type of solar cell showed that the shunt resistance and series resistance decreased under illumination.

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47

Tayel, Mazhar, Moataz Soliman, Shaker Ebrahim, and Ahmed El-Shaer. "Voltage Responsivity Measurements for PANI-DBSA/PVDF Infrared Sensor Using Electrical Chopped Circuit." International Conference on Electrical Engineering 10, no. 10 (April 1, 2016): 1–10. http://dx.doi.org/10.21608/iceeng.2016.30349.

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48

Bilal, Salma, Salma Gul, Khurshid Ali, and Anwar-ul-Haq Ali Shah. "Synthesis and characterization of completely soluble and highly thermally stable PANI-DBSA salts." Synthetic Metals 162, no. 24 (December 2012): 2259–66. http://dx.doi.org/10.1016/j.synthmet.2012.11.003.

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49

Kim, Eun Ok, Jong Hyeok Lee, and Sun Woong Choi. "Influence of Polymer Morphology and Dispersibility on Mechanical Properties and Electrical Conductivity of Solution-cast PANI-DBSA/HIPS Blends." Polymer Korea 35, no. 6 (November 30, 2011): 543–47. http://dx.doi.org/10.7317/pk.2011.35.6.543.

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50

Zainuri, Mochamad, Rahma Fitri Puspitasari, Deril Ristiani, and Triwikantoro. "The Effects of Layer Thickness of Radar Absorbing Materials Prepared by Double Layer Method on X-Band Wavelength Frequency." Materials Science Forum 966 (August 2019): 35–40. http://dx.doi.org/10.4028/www.scientific.net/msf.966.35.

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Double layer coating with variations in layer thickness on radar absorbent material (RAM), and Polyaniline dobed by DBSA as a dielectric material has been successfully synthesized. As well as Barium M-Hexaferrite doped by Zn2+ at x=0.9 as magnetic material successfully synthesized. Polyaniline has been synthesized by polymerization method and Barium M-Hexaferrite has been synthesized by solid state method. Characterization results obtained the conductivity of Polyaniline and Barium M-Hexaferrite respectively 4.4 × 10-1 S/m and 2.09 × 10-3 S/m, both of which are in range of semiconductor materials conductivity. The presence of Zn2+ doping successfully reduced hard magnetic properties of Barium M-Hexaferrite to be soft magnetic, with coercivity field (Hc) equals 0.0181 Tesla. Based on research that has been done, represent that double layer design with variations PANi : PANi + BaM (3:1) has maximum reflection loss value about -29,6003 dB, and 96.69% of energy absorbed. Whereas in variation of PANi: PANi + BaM (3: 1) has minimum reflection loss value about -15.2937 dB, and 82.21% of energy absorbed. In addition, the coating thickness variations also affect the absorption band width, with the most effective absorption peaks in “D” variation with bandwidth equals 1.81 GHz in range of frequency 8 to 9.81 GHz.

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Journal articles on the topic 'PANI-DBSA'

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