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Journal articles on the topic 'Poly(acrylamide-co- acrylic acid)'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Li, Ting Xi, Na Kong, Su Su Gao, Peng Sui, Yu Hua Zhao, and Cheng Qian Yuan. "Synthesis and Water Absorbency of Poly(acrylic acid-co-acrylamide)." Advanced Materials Research 250-253 (May 2011): 695–98. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.695.

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A new type of poly (acrylic acid-co-acrylamide) was synthesized by copolymerization method using acrylic acid (AA) and acrylamide (AM) as monomer. Synthesis technology was as follow: the acrylamide and acrylic acid molar ratio was 0.3-0.4, the temperature was 55-60°C, the degree of neutralization of AA was 70%, the potassium persulfate and monomer mass ratio was 0.2%-0.3%, the aluminum hydroxide and monomer mass radio was 0.03%-0.05%. The water absorption was more than thousands of times.

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2

Ding, Yuan Rong, Zhi Wei Li, He Qun Su, and Yang Ding. "Study on Viscosity of Poly(Acrylic Acid-Co-Acrylamide) Concentrated Solution with Different Potential Crosslinking Agent." Advanced Materials Research 311-313 (August 2011): 1157–60. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.1157.

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Poly(acrylic acid-co-acrylamide) has large number of ionic and nonionic hydrophilic groups, such making the rheological behavior of its solution complex. In this research, four different potential crosslinking agents which contains activating hydroxyl group and unsaturated bond were introduced into the poly(acrylic acid-co-acrylamide) polymer during aqueous solution radical polymerizations. Rotary viscosimeter was chosen to characterize the apparent viscosity of poly(acrylic acid-co-acrylamide) concentrated solutions. Temperature, concentration of the aqueous concentrated solutions and proportion of potential crosslinking agent are the most important factors. Results shows that the apparent viscosity of PAAM concentrated solution decreases with the increase of temperature, the decreases of concentration of the aqueous concentrated solutions and the proportion of potential crosslinking agent.

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3

Czarnecka, Elżbieta, and Jacek Nowaczyk. "Synthesis and Characterization Superabsorbent Polymers Made of Starch, Acrylic Acid, Acrylamide, Poly(Vinyl Alcohol), 2-Hydroxyethyl Methacrylate, 2-Acrylamido-2-methylpropane Sulfonic Acid." International Journal of Molecular Sciences 22, no. 9 (April 21, 2021): 4325. http://dx.doi.org/10.3390/ijms22094325.

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Three polymers with excellent absorption properties were synthesized by graft polymerization: soluble starch-g-poly(acrylic acid-co-2-hydroxyethyl methacrylate), poly(vinyl alcohol)/potato starch-g-poly(acrylic acid-co-acrylamide), poly(vinyl alcohol)/potato starch-g-poly(acrylic acid-co-acrylamide-co-2-acrylamido-2-methylpropane sulfonic acid). Ammonium persulfate and potassium persulfate were used as initiators, while N,N′-methylenebisacrylamide was used as the crosslinking agent. The molecular structure of potato and soluble starch grafted by synthetic polymers was characterized by means of Fourier Transform Infrared Spectroscopy (FTIR). The morphology of the resulting materials was studied using a scanning electron microscope (SEM). Thermal stability was tested by thermogravimetric measurements. The absorption properties of the obtained biopolymers were tested in deionized water, sodium chroma solutions of various concentrations and in buffer solutions of various pH.

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4

Zhou, Cheng, Yan Chen, Mingjun Huang, Yi Ling, Liming Yang, Guochen Zhao, and Jie Chen. "A pH and UCST thermo-responsive tri-block copolymer (PAA-b-PDMA-b-P(AM-co-AN)) with micellization and gelatinization in aqueous media for drug release." New Journal of Chemistry 44, no. 34 (2020): 14551–59. http://dx.doi.org/10.1039/d0nj02755c.

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A brand new pH and thermo-responsive amphiphilic ABC triblock copolymer of poly(acrylic acid)-block-poly(N,N-dimethyl acrylamide)-block-poly(acrylamide-co-acrylonitrile) (PAA-b-PDMA-b-P(AM-co-AN)) was applied as drug carrier systems.

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5

Zheng, Si Yu, Ye Tian, Xin Ning Zhang, Miao Du, Yihu Song, Zi Liang Wu, and Qiang Zheng. "Spin-coating-assisted fabrication of ultrathin physical hydrogel films with high toughness and fast response." Soft Matter 14, no. 28 (2018): 5888–97. http://dx.doi.org/10.1039/c8sm01126e.

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Tough physical hydrogel films were facilely prepared by spin-coating of a poly(acrylic acid-co-acrylamide) or poly(acrylic acid-co-N-isopropylacrylamide) solution and subsequent gelation in FeCl₃ solution to form carboxyl–Fe³⁺ coordination complexes.

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6

Vinu, R., and Giridhar Madras. "Photocatalytic Degradation of Poly(Acrylamide-co-acrylic Acid)." Journal of Physical Chemistry B 112, no. 30 (July 2008): 8928–35. http://dx.doi.org/10.1021/jp801887t.

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7

Swift, Thomas, Linda Swanson, Andrew Bretherick, and Stephen Rimmer. "Measuring poly(acrylamide) flocculants in fresh water using inter-polymer complex formation." Environmental Science: Water Research & Technology 1, no. 3 (2015): 332–40. http://dx.doi.org/10.1039/c4ew00092g.

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8

Katime, I., R. Novoa, E. Dı́az de Apodaca, E. Mendizábal, and J. Puig. "Theophylline release from poly(acrylic acid-co-acrylamide) hydrogels." Polymer Testing 18, no. 7 (October 1999): 559–66. http://dx.doi.org/10.1016/s0142-9418(98)00054-3.

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9

Maurer, J. J., and G. D. Harvey. "Thermal degradation characteristics of poly(acrylamide-co-acrylic acid) and poly(acrylamide-co-sodium acrylate) copolymers." Thermochimica Acta 121 (November 1987): 295–306. http://dx.doi.org/10.1016/0040-6031(87)80180-6.

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10

Colletti, Ronald F., Harvey S. Gold, and Cecil Dybowski. "Characterization of the Adsorption of Poly(Acrylamide), Poly(4-methoxystyrene), and Poly(Acrylic Acid) on Aluminum Oxide by Inelastic Electron Tunneling Spectroscopy." Applied Spectroscopy 41, no. 7 (September 1987): 1185–89. http://dx.doi.org/10.1366/0003702874447725.

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The adsorptions of polystyrene, poly(methoxystyrene), poly(acrylamide), and poly(acrylic acid) on aluminum oxide are investigated with inelastic electron tunneling spectroscopy. Comparison with infrared data for thin polymer films of the polymer samples gives insight into the adsorbed polymer configuration. Data indicate that poly(styrene) is weakly physisorbed to aluminum oxide, while poly(methoxystyrene), poly(acrylamide), and poly(acrylic acid) react to form strong bonds with the oxide surface. On the basis of this data, adsorption mechanisms are suggested for each of the polymers. Poly(acrylamide) adsorbs via a protonation of the amine group by the surface hydroxyl groups. Poly(4-methoxystyrene) forms a phenolate ion and can react further with the aluminum surface centers. Poly(acrylic acid) adsorbs to the oxide surface in a manner analogous to that of small organic acids such as the carboxylate ion.

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11

Song, Xue Feng, and Ting Shu He. "Resistance to Carbonation of Concrete Treated by Superabsorbent Resin Synthesized In Situ." Advanced Materials Research 374-377 (October 2011): 1872–76. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.1872.

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Carbonation is one of the key factors that result in the corrosion of the reinforcing steel embedded in concrete. In this work, a novel method to improve the resistance to carbonation of concrete was presented, i.e. the surface of the concrete specimens were treated by Super-absorbent resin (SAR) synthesized in situ, the prepolymer solution of poly (acrylic acid-co-acrylamide) with initiator and crosslinker was impregnated in the capillary-pores of concrete, then the acrylic acid and acrylamide copolymer by self-crosslingking under the initiator to synthesize SAR of poly (acrylic acid-co-acrylamide). The backbone of SAR is characterized by FTIR spectrum; the resistance to carbonation of the concrete with and without treatment by SAR was studied and the carbonation depth of concrete after the accelerated carbonation testing was measured. The results show that the concrete specimens treated with SAR have higher resistance to carbonation than that of the blank concrete specimens due to the synthesized SAR being swollen after absorbing water, filling the capillary-pores of concrete and reducing the ingress of CO2 and H2O.

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12

Xie, Jianjun, Xinrong Liu, and Jifu Liang. "Absorbency and adsorption of poly(acrylic acid-co-acrylamide) hydrogel." Journal of Applied Polymer Science 106, no. 3 (2007): 1606–13. http://dx.doi.org/10.1002/app.26666.

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13

Aljeboree, Aseel M., Rasha Amer Mohammed, Makarim A. Mahdi, Layth S. Jasim, and Ayad F. Alkaim. "Synthesis, Characterization of P(CH/AA-co-AM) and Adsorptive Removal of Pb (II) ions from Aqueous Solution: Thermodynamic Study." NeuroQuantology 19, no. 7 (August 11, 2021): 137–43. http://dx.doi.org/10.14704/nq.2021.19.7.nq21096.

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Cross-linking Chitosan/Poly (Acryl amide-Acrylic acid) Hydrogel (P(CH/AA-co-AM)) synthesized via free radical polymerization of Acrylamide and acrylic acid as monomers after that addition chitosan, using MBA and KPS as initiator. The produced materials' structural, surface, and thermal properties were determined using the following techniques: FT-IR, TGA, TEM, and FE-SEM. This study is concerned with a significant application of surface chemistry in the fields of removing heavy metals. It deals with the adsorption-systems of Pb (II) on Cross-linking Chitosan / Poly (Acrylic acid-Acryl amide) Hydrogel at variable conditions of concentration and temp. The measured data are following the Freundlich equation and, according to the Giles classification, the adsorption isotherms are of type S3. As a temperature feature (10, 20, 25 and 30oC), adsorption was investigated. With increasing temperature (endothermic process), the extent of adsorption of Pb (II)on P(CH / AA-co-AM) was found for increase. They have also measured the essential thermodynamic functions.

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14

Zaharia, Anamaria, Anita-Laura Radu, Stela Iancu, Ana-Mihaela Florea, Teodor Sandu, Iulian Minca, Victor Fruth-Oprisan, Mircea Teodorescu, Andrei Sarbu, and Tanta-Verona Iordache. "Bacterial cellulose-poly(acrylic acid-co-N,N′-methylene-bis-acrylamide) interpenetrated networks for the controlled release of fertilizers." RSC Advances 8, no. 32 (2018): 17635–44. http://dx.doi.org/10.1039/c8ra01733f.

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In this study, composite hydrogels with interpenetrated polymer networks (IPNs), based on bacterial cellulose (BC) and poly(acrylic acid-co-N,N′-methylene-bis-acrylamide) (PAA) were synthesized by radical polymerization.

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15

Pulat, Mehlika, and Meliha Çetin. "Pantoprazole-Na Release from Poly(acrylamide-co-crotonic acid) and Poly(acrylic acid-co-crotonic acid) Hydrogels." Journal of Bioactive and Compatible Polymers 23, no. 4 (July 2008): 305–18. http://dx.doi.org/10.1177/0883911508090201.

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16

Liu, Zhen, Liuyin Fan, Hua Xiao, and Chengxi Cao. "A multiple covalent crosslinked soft hydrogel for bioseparation." Chemical Communications 52, no. 15 (2016): 3247–50. http://dx.doi.org/10.1039/c5cc09944g.

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17

Ran, Qianping, Zhen Huang, Xin Shu, Yong Yang, and Zhiyong Zhang. "A novel and controllable route for preparing high solid-content and low-viscosity poly(acrylamide-co-acrylic acid) aqueous latex dispersions." RSC Advances 5, no. 70 (2015): 56645–52. http://dx.doi.org/10.1039/c5ra07410j.

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High solid-content and low-viscosity poly(acrylamide-co-acrylic acid) aqueous latex dispersions were obtained through a novel strategy, which involves swelling followed by diffusion and redox initialized polymerization inside the seed particle.

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18

Brouwer White, B. H., and J. C. T. Kwak. "Swelling of hydrophobically modified poly(acrylamide) and poly(acrylamide)- co -(acrylic acid) gels in surfactant solutions." Colloid & Polymer Science 277, no. 8 (August 3, 1999): 785–91. http://dx.doi.org/10.1007/s003960050452.

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19

Ghazali, S., S. Jamar, N. Noordin, and K. M. Tan. "Properties of Controlled-Release-Water-Retention Fertilizer Coated with Carbonaceous-g-Poly(acrylic acid-co-acrylamide)Superabsorbent Polymer." International Journal of Chemical Engineering and Applications 8, no. 2 (April 2017): 141–47. http://dx.doi.org/10.18178/ijcea.2017.8.2.646.

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20

Wang, Man Yi, Yan Ping Wang, Yan Ting Yu, Yi Min Wang, and Jian Hua Ni. "Glutaraldehyde-Cross-Linked Poly(acrylic acid-co-acrylamide)/Poly(vinyl alcohol) Superabsorbent Membranes." Materials Science Forum 789 (April 2014): 194–200. http://dx.doi.org/10.4028/www.scientific.net/msf.789.194.

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The superabsorbent membranes were prepared with acrylic acid (AA) and acrylamide (AM) as the monomers, poly (vinyl alcohol) (PVA) as toughening components, potassium persulfate (KPS) as the initiator agent, and glutaraldehyde (GA) as cross-linker by means of aqueous solution polymerization. Their structures were analyzed by FTIR spectroscopy. The effects of synthesis and heat-treatment conditions on water absorbency of superabsorbent membranes were investigated. Their water absorbency with different pH was studied as well. The results showed that the superabsorbent membranes exhibited intelligently pH-responsiveness.

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21

Rivas, Bernabé L., Benita Quilodrán, and Eduardo Quiroz. "Metal ion retention properties of poly(acrylic acid) and poly[N-3-(dimethylamino)propyl acrylamide-co-acrylic acid]." Journal of Applied Polymer Science 97, no. 3 (2005): 1385–94. http://dx.doi.org/10.1002/app.21836.

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22

Rivas, B. L., S. A. Pooley, M. Soto, and K. E. Geckeler. "Synthesis, characterization, and polychelatogenic properties of poly(acrylic acid-co-acrylamide)." Journal of Polymer Science Part A: Polymer Chemistry 35, no. 12 (September 15, 1997): 2461–67. http://dx.doi.org/10.1002/(sici)1099-0518(19970915)35:12<2461::aid-pola16>3.0.co;2-5.

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23

Zhou, Xianju, Lihui Weng, Qiang Chen, Jianming Zhang, Deyan Shen, Zhuchuan Li, Manjun Shao, and Jian Xu. "Investigation of pH sensitivity of poly(acrylic acid-co-acrylamide) hydrogel." Polymer International 52, no. 7 (2003): 1153–57. http://dx.doi.org/10.1002/pi.1207.

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24

Zhang, FuQiang, ZengJian Guo, Hong Gao, YanChi Li, Li Ren, Lei Shi, and LiXin Wang. "Synthesis and Properties of Sepiolite/poly (acrylic acid-co-acrylamide) Nanocomposites." Polymer Bulletin 55, no. 6 (October 25, 2005): 419–28. http://dx.doi.org/10.1007/s00289-005-0458-2.

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25

Li, Shengfang, and Shilin Yan. "Rapid synthesis of macroporous graphene oxide/poly(acrylic acid-co-acrylamide) nanocomposite hydrogels with pH-sensitive behavior by frontal polymerization." RSC Advances 6, no. 40 (2016): 33426–32. http://dx.doi.org/10.1039/c6ra03214a.

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Macroporous pH-sensitive graphene oxide (GO)/poly(acrylic acid-co-acrylamide) (PAA) nanocomposite hydrogels were prepared by frontal polymerization (FP) using a solvent mixture composed of DMF and a small quantity of GO water solution as a heat conductive medium.

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26

Cheng, Wei-Min, Xiang-Ming Hu, Yan-Yun Zhao, Ming-Yue Wu, Zun-Xiang Hu, and Xing-Teng Yu. "Preparation and swelling properties of poly(acrylic acid-co-acrylamide) composite hydrogels." e-Polymers 17, no. 1 (January 1, 2017): 95–106. http://dx.doi.org/10.1515/epoly-2016-0250.

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AbstractIn order to study the effect of composite clays on the mechanical properties, water absorption and salt tolerance of a hydrogel, a poly(acrylic acid-co-acrylamide)/bentonite/kaolin composite hydrogel was prepared. Acrylic acid and acrylamide have been used as water absorbent monomers. N,N′-methylene bisacrylamide was used as a crosslinking agent while potassium persulfate was used as an initiator. The water preserving capability, repeated water absorption, salt resistance and the mechanical properties of the composite hydrogel are analyzed and discussed. The results show that a small quantity of bentonite can increase the storage modulus of the composite hydrogel, whereas the excess clay had an unfavorable effect on the mechanical strength of the composite hydrogel. Both bentonite and kaolin significantly improved the water preserving capability, repeated water absorption and salt resistance of the composite hydrogel. Optimum values for the amounts of bentonite and kaolin were found to be 10% and 5%, respectively.

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27

Erizal, Sudirman, Emil Budianto, A. Mahendra, and Rike Yudianti. "Radiation Synthesis of Superabsorbent Poly(acrylamide-co-acrylic acid)-Sodium Alginate Hydrogels." Advanced Materials Research 746 (August 2013): 88–96. http://dx.doi.org/10.4028/www.scientific.net/amr.746.88.

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Sodium alginate (NaAlg) is considered to be a potential natural polymer for biomaterial applications, because of its hydrophilic properties that is capable to increase the swelling of hydrogels and biodegradable. This study describes the synthesis of a poly (acrylamide-co-acrylic acid) NaAlg superabsorbent hydrogels via crosslinking gamma radiation. The effect of irradiation dose (20-40 kGy) and NaAlg concentration (0.1-0.7 %) of on swelling of hydrogels were studied. The copolymers were characterized by Fourier transform infra red spectroscopy (FTIR) and scanning electron microscopy (SEM) micrograph. The presence of the lowest (0.1%) NaAlg concentration provokes a significant increasing the equilibrium degree solution (EDS) of hydrogel up 800 g/g ,and the extent of gel fraction increases as a function irradiation dose up to about 99 %. The hydrogels were also found to be sensitive to the ionic strength of medium. The FTIR spectra of hydrogels were shown crosslinking occurs between acrylamide and acrylic acid and pores structures in the hydrogel observed by using SEM.

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28

Davis, Joshua T., Paul D. Hamilton, and Nathan Ravi. "Poly(acrylamide co-acrylic acid) for use as an in situ gelling vitreous substitute." Journal of Bioactive and Compatible Polymers 32, no. 5 (March 23, 2017): 528–41. http://dx.doi.org/10.1177/0883911516688482.

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Our objective is to improve on our previous work developing thiol-containing water-soluble copolyacrylamides that form hydrogels in situ for use as vitreous substitutes. In this study, we evaluate the incorporation of acrylic acid by varying the feed ratio of acrylic acid monomer from 0 to 40 mol% in combination with acrylamide, and bis-acryloylcystamine as the reversible cross-linker. After polymerization, the formed copolymer hydrogels were reduced with dithiothreitol to cleave the disulfide cross-linkers. Purified, lyophilized copolymers were made in a concentration range of 12.5–17.5 mg/mL (polymer in deionized water) and were gelled by oxidation. Chemical, physical, optical, and rheological characterizations along with in vitro biocompatibility studies were performed using thiazolyl blue and Electric Cell–substrate Impedance Sensing. Increasing the percentage of acrylic acid caused the polymer to gel at 12.5 mg/mL as opposed to 20 mg/mL without acrylic acid. Storage modulus values covered the range of natural vitreous (1–108 Pa). Biocompatibility testing in tissue culture with retinal pigment epithelial cells (ARPE-19) showed no toxicity at 10 mg/mL or less when compared to controls, higher concentrations. In contrast to our previously reported copolyacrylamide hydrogels, these hydrogels remain optically clear and gel at lower concentrations and have the potential for use as vitreous substitutes.

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29

Tang, Yaoji, Rui Yang, Dong Ma, Bin Zhou, Linhui Zhu, and Jing Yang. "Removal of Methyl Orange from Aqueous Solution by Adsorption onto a Hydrogel Composite." Polymers and Polymer Composites 26, no. 2 (February 2018): 161–68. http://dx.doi.org/10.1177/096739111802600204.

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Poly(acrylic acid- co-2-acrylamide-2-methyl-1-propanesulfonic acid)/kaolin hydrogel composite was synthesised using acrylic acid (AA), 2-acrylamide-2-methyl-1-propanesulfonic acid (AMPS) and kaolin (KL) as main materials. The composite was characterised and used to remove methyl orange (MO) from aqueous solutions. Effect of adsorption conditions, including initial concentration of MO, contact time, pH values and ionic strength, on the adsorption capacities was studied. Maximal adsorption capacity was 506 mg/g as the initial concentration of MO was 1000 mg/L. It showed that the adsorption process was spontaneous, and the isotherms and kinetics were in good agreement with the Freundlich isotherm model and pseudo-second-order equation, respectively.

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30

Rivas, Bernabé L., Iván M. Perič, Carla Muñoz, and Renêe Alvear. "Poly(N-hydroxymethyl acrylamide-co-acrylic acid) and poly(N-hydroxymethyl acrylamide-co-acrylamidoglycolic acid): synthesis, characterization, and metal ion removal properties." Polymer Bulletin 68, no. 2 (June 21, 2011): 391–403. http://dx.doi.org/10.1007/s00289-011-0551-7.

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31

Craciun, Gabriela, Elena Manaila, and Maria-Daniela Stelescu. "Flocculation Efficiency of Poly(Acrylamide-Co-Acrylic Acid) Obtained by Electron Beam Irradiation." Journal of Materials 2013 (April 10, 2013): 1–7. http://dx.doi.org/10.1155/2013/297123.

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A correlation between physicochemical characteristics of flocculants obtained by electron beam irradiation and their efficiency for wastewater treatment is presented. For real wastewater treatment, our interest was focused upon total suspended solids, fatty matter, and chemical oxygen demand. Flocculation studies were carried out using a standard jar test. A treatment option based on poly(acrylamide-co-acrylic acid) for wastewater taken from a slaughterhouse plant is presented.

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32

Huang, Haiyong, Tomasz Kowalewski, and Karen L. Wooley. "Nanodroplets of polyisoprene fluid contained within poly(acrylic acid-co-acrylamide) shells." Journal of Polymer Science Part A: Polymer Chemistry 41, no. 11 (April 17, 2003): 1659–68. http://dx.doi.org/10.1002/pola.10712.

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33

Gao, B., Y. C. Wu, Z. G. Zhang, J. J. Hua, K. D. Yao, and X. Hou. "Poly(acrylamide‐co‐acrylic acid)/Poly(vinyl pyrrolidone) Polymer Blends Prepared by Dispersion Polymerization." Journal of Macromolecular Science, Part B 47, no. 3 (April 2008): 544–54. http://dx.doi.org/10.1080/00222340801955495.

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34

Jing, Zhanxin, Aixing Xu, Yan-Qiu Liang, Zhaoxia Zhang, Chuanming Yu, Pengzhi Hong, and Yong Li. "Biodegradable Poly(acrylic acid-co-acrylamide)/Poly(vinyl alcohol) Double Network Hydrogels with Tunable Mechanics and High Self-healing Performance." Polymers 11, no. 6 (June 1, 2019): 952. http://dx.doi.org/10.3390/polym11060952.

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We proposed a novel strategy in the fabrication of biodegradable poly(acrylic acid-co-acrylamide)/poly(vinyl alcohol) (P(AAc-co-Am)/PVA) double network (DN) hydrogels with good mechanical and self-healing properties. In the DN hydrogel system, P(AAc-co-Am) polymers form a network through the ionic coordinates between –COO– and Fe3+ and hydrogen bonding between –COOH and –CONH2, while another network is fabricated by the complexation between PVA and borax. The influences of the composition on the rheological behaviors and mechanical properties of the synthesized DN hydrogels were investigated. The rheological measurements revealed that the viscoelasticity and stiffness of the P(AAc-co-Am)/PVA DN hydrogels increase as the acrylamide and Fe3+ concentrations increase. At 0.05 mmol of Fe3+ and 50% of acrylamide, tensile strength and elongation at break of P(AAc-co-Am)/PVA DN hydrogels could reach 329.5 KPa and 12.9 mm/mm, respectively. These properties arise from the dynamic reversible bonds existed in the P(AAc-co-Am)/PVA DN hydrogels. These reversible bonds also give good self-healing properties, and the maximum self-healing efficiency of P(AAc-co-Am)/PVA DN hydrogels is up to 96.4%. The degradation test of synthesized DN hydrogels was also conducted under simulated physiological conditions and the weight loss could reach 74% in the simulated intestinal fluid. According to the results presented here, the synthesized P(AAc-co-Am)/PVA DN hydrogels have a potential application prospect in various biomedical fields.

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35

Yang, Huang, and Sun Dong-ping. "BACTERIAL CELLULOSE WHISKER/POLY(ACRYLIC ACID-co-ACRYLAMIDE) SUPER-ABSORBENT COMPOSITE RESINS." Acta Polymerica Sinica 013, no. 9 (October 9, 2013): 1183–89. http://dx.doi.org/10.3724/sp.j.1105.2013.12397.

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36

Roy, Sagar, Chaudhery Mustansar Hussain, and Somenath Mitra. "Poly(acrylamide-co-acrylic acid) hydrophilization of porous polypropylene membrane for dehumidification." Separation and Purification Technology 107 (April 2013): 54–60. http://dx.doi.org/10.1016/j.seppur.2012.12.014.

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37

Buikliskii, V. D., V. F. Levchenko, F. A. Popov, and M. Yu Sheremet. "Borohydride reduction of Ag+ in aqueous poly(acrylic acid-co-acrylamide) solutions." Colloid Journal 74, no. 1 (February 2012): 7–11. http://dx.doi.org/10.1134/s1061933x12010048.

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38

Lee, Sang-Heon, Keon Kim, and Cheol-Woo Yi. "Poly(acrylamide-co-acrylic acid) Gel Electrolytes for Ni-Zn Secondary Batteries." Bulletin of the Korean Chemical Society 34, no. 3 (March 20, 2013): 717–18. http://dx.doi.org/10.5012/bkcs.2013.34.3.717.

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39

Xie, Jianjun, Xinrong Liu, Jifu Liang, and Yingshe Luo. "Swelling properties of superabsorbent poly(acrylic acid-co-acrylamide) with different crosslinkers." Journal of Applied Polymer Science 112, no. 2 (April 15, 2009): 602–8. http://dx.doi.org/10.1002/app.29463.

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40

Shukla, Neelesh Bharti, and Giridhar Madras. "Adsorption of cationic dyes on poly(acrylic acid-co-sodium acrylate-co-acrylamide) superabsorbents." Journal of Applied Polymer Science 124, no. 5 (November 27, 2011): 3892–99. http://dx.doi.org/10.1002/app.35479.

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41

Ni, Cai Hua, Xiao Xia Zhu, Qing Lan Wang, and Xian Yu Zeng. "Studies on LCST of poly (N-isopropylacrylamide-co-acrylic acid-co-N-diacetone acrylamide)." Chinese Chemical Letters 18, no. 1 (January 2007): 79–80. http://dx.doi.org/10.1016/j.cclet.2006.11.003.

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Hu, David Shiaw-Guang, and Yow-Shi Lin. "Synthesis and dielectric characterization of poly[acrylonitrile-co-acrylamide-co-(acrylic acid)] terpolymer gels." Macromolecular Chemistry and Physics 195, no. 11 (November 1994): 3629–42. http://dx.doi.org/10.1002/macp.1994.021951110.

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Abidin, Z. H. Z., N. S. A. Manah, A. N. Hadi, N. S. Saugi, F. A. Fuad, N. A. Mazni, H. C. Hassan, M. A. Careem, and A. K. Arof. "The colour stability of natural blue dye extracted from Clitoria ternatea L. in poly(acrylamide-co-acrylic acid) coating film." Pigment & Resin Technology 48, no. 4 (July 1, 2019): 265–71. http://dx.doi.org/10.1108/prt-12-2017-0106.

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Purpose This paper aims to focus on a comparison study of the visible stability of natural blue dye consisting anthocyanin molecules extracted from Clitoria ternatea in coating films. Design/methodology/approach The coating films were prepared by mixing the blue dye with poly(acrylamide-co-acrylic acid) in three different weight ratios. Samples were coded as 10PBA, 15PBA and 20PBA, where PBA is the abbreviation for poly acrylamide-co-acrylic acid, blue dyes and anthocyanin. The number at the beginning of each code represents the weight percentage of poly(acrylamide-co-acrylic acid) to natural blue dye. The mixtures were applied on separate glass substrates to form coating films. Another set of samples were prepared for the comparison study with a commercial acrylic clear coat (cc) applied on the surface of the 10PBA, 15PBA and 20PBA coating films. These coating films were coded 10PBAcc, 15PBAcc and 20PBAcc. The purpose of the clear coat is to observe how it affects the colour stability of the blue coating films with respect to time. All samples were exposed to the ultraviolet (UV) source, an 18 W Philips TL-D 18w/830 UV fluorescent lamp. The UV lamp was placed 15 cm above the surface of the samples for 35 days. The colour of the coatings was measured using CIE L*a*b* colour space coordinate. Findings The results obtained show 10PBA and 10PBAcc have the highest colour stability after 35 days of exposure to UV light. The reflectivity of the coating films was also measured during exposure to UV lamp. Reflectivity measurements also showed that 10PBA and 10PBAcc coating films had the highest reflective stabilities. Research limitations/implications The potential of using natural blue dye consisting anthocyanin in coating film to obtain high colour stability. Practical implications The coating film developed in this work is suitable to be applied on glass substrates. Originality/value The application of anthocyanin dye extracted from the Clitoria ternatea L. as a colourant in coating films

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Aydınoğlu, Demet. "Investigation of pH-dependent swelling behavior and kinetic parameters of novel poly(acrylamide-co-acrylic acid) hydrogels with spirulina." e-Polymers 15, no. 2 (March 1, 2015): 81–93. http://dx.doi.org/10.1515/epoly-2014-0170.

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AbstractPoly(acrylamide-co-acrylic acid)-spirulina (AAm-AAc-Sp) hydrogels were prepared by free radical solution polymerization of the monomer acrylamide (AAm) and the comonomer acrylic acid (AAc) with N,N-methylene bisacrylamide (BAAm) as the crosslinker in the presence of spirulina (Sp), which is a microalga species. The swelling ratios of the hydrogels were followed by gravimetric measurements. Hence, swelling kinetics and diffusion parameters were determined. Furthermore, the morphological structures and mechanical behaviors of the hydrogels were investigated by scanning electron microscopy and by using a uniaxial compression machine, respectively. All the results showed that spirulina had strong influence in the pH-dependent swelling behavior, as well as on the kinetic and diffusion parameters due to its interaction with the acrylic acid units. These interactions were attributed to spirulina, which caused a change in pore size and its distribution. The present novel hydrogels showed high swelling at neutral pH, but collapsed slowly at low and high pH values. Thus, these AAm-AAc-Sp hydrogels can be good candidates for pH-sensitive drug delivery systems.

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Chen, Jiao Jiao, Xin Lei Fu, and Dong Xin Shi. "Preparation and Thermosensitivity of N-Isopropylacrylamide Microgels Containing L-Phenylalanine." Key Engineering Materials 609-610 (April 2014): 666–69. http://dx.doi.org/10.4028/www.scientific.net/kem.609-610.666.

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Novel chiral temperature-sensitive microgels based on N-isopropylacrylamide are reported in this paper. Such particles, poly (N-isopropylacrylamide-co-acrylic acid-L-phenylalanine ethyl ester)[ poly (NIPAM-co-ALPhe)], were prepared by free radical polymerization of NIPAM, chiral monomer ALPhe and crosslinker N,N,-methylene-bis (acrylamide). The microgels exhibit spherical shape and favorable monodispersity. Increasing the content of ALPhe units incorporated into the microgel network will increase the average diameter, but decrease the swelling ratios and the transition temperature of particles.

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Riahinezhad, Marzieh, Neil McManus, and Alexander Penlidis. "Shear Viscosity of Poly (Acrylamide/Acrylic Acid) Solutions." Macromolecular Symposia 360, no. 1 (February 2016): 179–84. http://dx.doi.org/10.1002/masy.201500092.

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Jitreewas, Parinya, Phanita Tansiri, Siriporn Pranee, Chalermchai Khemtong, Narong Pungwiwat, and Samitthichai Seeyangnok. "Preparation and Application of Poly(Acrylic Acid-co-Acrylamide) on Scale and Corrosion Inhibition." Key Engineering Materials 824 (October 2019): 142–48. http://dx.doi.org/10.4028/www.scientific.net/kem.824.142.

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This research is focused on the synthesis and the ability to inhibit scale and corrosion of poly(acrylic acid-co-acrylamide) (PAA-AM copolymers). A series of polymers were synthesized by free radical polymerization having various weight ratios of acrylic acid (AA) to acrylamide (AM). The structures of the synthesized polymers were characterized by UV-Vis Spectroscopy, FT-IR, and 1H-NMR. The thermal stability of the polymers was analyzed by a TGA technique. The water solubility of the polymers was examined using a turbidity meter. The scale inhibition performance test was performed by titration of calcium ion with ethylene diamine tetraacetic acid (EDTA) solution. After that, the crystal structure of CaCO3 scale from the scale inhibition test was examined using a scanning electron microscope. The efficiency of the corrosion inhibitor on low carbon steel AISI 1018 was investigated by a potentiodynamic polarization technique. The result show that PAA-AM copolymers having a 9:1 weight ratio with 45.82% at 100 ppm inhibited scale forming. The corrosion resistance of all inhibitors could be achieved when the concentration of the inhibitor was lower than 100 ppm.

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Saruchi, Saruchi, B. S. Kaith, Rajeev Jindal, Vaneet Kumar, and Manpreet S. Bhatti. "Optimal response surface design of Gum tragacanth-based poly[(acrylic acid)-co-acrylamide] IPN hydrogel for the controlled release of the antihypertensive drug losartan potassium." RSC Adv. 4, no. 75 (2014): 39822–29. http://dx.doi.org/10.1039/c4ra02803a.

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The present study proposes the development and optimization of a new interpenetrating polymer network (IPN), consisting of Gum tragacanth, poly(acrylic acid) (PAA), and poly(acrylamide) (PAAm), for the in situ controlled release of losartan potassium under different pH conditions at 37 °C.

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Josh, Vinitha, Mohammad Y. Haik, Ahmad I. Ayesh, Mahmoud A. Mohsin, and Yousef Haik. "Electrical properties of sorbitol-doped poly(vinyl alcohol)-poly(acrylamide-co-acrylic acid) polymer membranes." Journal of Applied Polymer Science 128, no. 6 (October 12, 2012): 3861–69. http://dx.doi.org/10.1002/app.38619.

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Fiumefreddo, Andrea, and Marcel Utz. "Bulk Streaming Potential in Poly(acrylic acid)/Poly(acrylamide) Hydrogels." Macromolecules 43, no. 13 (July 13, 2010): 5814–19. http://dx.doi.org/10.1021/ma100565s.

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