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Journal articles on the topic 'Cellulose derivative'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Lucia, Arianna, Markus Bacher, Hendrikus W. G. van Herwijnen, and Thomas Rosenau. "A Direct Silanization Protocol for Dialdehyde Cellulose." Molecules 25, no. 10 (2020): 2458. http://dx.doi.org/10.3390/molecules25102458.

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Cellulose derivatives have many potential applications in the field of biomaterials and composites, in addition to several ways of modification leading to them. Silanization in aqueous media is one of the most promising routes to create multipurpose and organic–inorganic hybrid materials. Silanization has been widely used for cellulosic and nano-structured celluloses, but was a problem so far if to be applied to the common cellulose derivative “dialdehyde cellulose” (DAC), i.e., highly periodate-oxidized celluloses. In this work, a straightforward silanization protocol for dialdehyde cellulose

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2

Correia, Daniela M., Erlantz Lizundia, Rafaela M. Meira, Mikel Rincón-Iglesias, and Senentxu Lanceros-Méndez. "Cellulose Nanocrystal and Water-Soluble Cellulose Derivative Based Electromechanical Bending Actuators." Materials 13, no. 10 (2020): 2294. http://dx.doi.org/10.3390/ma13102294.

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This study reports a versatile method for the development of cellulose nanocrystals (CNCs) and water-soluble cellulose derivatives (methyl cellulose (MC), hydroxypropyl cellulose (HPC), and sodium carboxymethyl cellulose (NaCMC)) films comprising the ionic liquid (IL) 2-hydroxy-ethyl-trimethylammonium dihydrogen phosphate ([Ch][DHP]) for actuator fabrication. The influence of the IL content on the morphology and physico–chemical properties of free-standing composite films was evaluated. Independently of the cellulose derivative, the ductility of the films increases upon [Ch][DHP] incorporation

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3

Demirdogen, Ruken Esra, Tuncay Yeşilkaynak, Tetyana Tishakova, and Fatih Mehmet Emen. "Antibacterial Cellulose Acetate Microfibers Containing Pyridine Derivative Complexes." Chemistry & Chemical Technology 15, no. 2 (2021): 217–25. http://dx.doi.org/10.23939/chcht15.02.217.

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Pyridine (L1) and 2,4-dimethylpyridine (L2) halide complexes of the type of [ML2X2] were prepared and characterized via FT-IR and 1H NMR. The CA microfibers containing complexes were electrospun and investigated via FT-IR. The morphologies of the microfibers were investigated via FE-SEM. Antibacterial activities of the complexes and the fibers were investigated.

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4

Oprea, Stefan, Petronela Gradinariu, and Veronica Oprea. "Properties and fungal biodegradation of the different cellulose derivatives structure included into castor oil-based polyurethane composites." Journal of Composite Materials 53, no. 25 (2019): 3535–48. http://dx.doi.org/10.1177/0021998319843334.

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The requirement to protect the environment involves the synthesis of new polymers, blends, and composites with a high content of biodegradable components. This work studies the synthesis and biodegradation of castor oil-based polyurethanes filled with different cellulose derivatives (hydroxyethyl cellulose and hydroxypropyl cellulose). The polyurethane composites present a slight decrease in tensile strength and thermal stability with the increase in cellulose derivatives content. Scanning electron microscopy results showed a good dispersion of the cellulose derivatives within the polyurethane

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Silva, D. F., A. F. A. Carvalho, T. Y. Shinya, G. S. Mazali, R. D. Herculano, and P. Oliva-Neto. "Recycle of Immobilized Endocellulases in Different Conditions for Cellulose Hydrolysis." Enzyme Research 2017 (March 29, 2017): 1–18. http://dx.doi.org/10.1155/2017/4362704.

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The immobilization of cellulases could be an economical alternative for cost reduction of enzyme application. The derivatives obtained in the immobilization derivatives were evaluated in recycles of paper filter hydrolysis. The immobilization process showed that the enzyme recycles were influenced by the shape (drop or sheet) and type of the mixture. The enzyme was recycled 28 times for sheets E′ and 13 times for drops B′. The derivative E′ showed the highest stability in the recycle obtaining 0.05 FPU/g, RA of 10%, and FPU Yield of 1.64 times, higher than FPU spent or Net FPU Yield of 5.3 tim

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Sun, Bo, Min Zhang, Jing Shen, Zhibin He, Pedram Fatehi, and Yonghao Ni. "Applications of Cellulose-based Materials in Sustained Drug Delivery Systems." Current Medicinal Chemistry 26, no. 14 (2019): 2485–501. http://dx.doi.org/10.2174/0929867324666170705143308.

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Bio-compatible, bio-degradable, and bio-available excipients are of critical interest for drug delivery systems. Cellulose and its derivative-based excipients have been well studied due to their green/natural and unique encapsulation/binding properties. They are often used in controlled/sustained drug delivery systems. In these applications, cellulose and its derivatives function generally can modify the solubility/gelling behavior of drugs, resulting in different mechanisms for controlling the release profiles of drugs. In this paper, the current knowledge in the structure and chemistry of co

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7

Ferreira, L. M. A., A. J. Durrant, J. Hall, G. P. Hazlewood, and H. J. Gilbert. "Spatial separation of protein domains is not necessary for catalytic activity or substrate binding in a xylanase." Biochemical Journal 269, no. 1 (1990): 261–64. http://dx.doi.org/10.1042/bj2690261.

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Xylanase A (XYLA) from Pseudomonas fluorescens subspecies cellulosa shows sequence conservation with two endoglucanases from the same organism. The conserved sequence in XYLA, consisting of the N-terminal 234 residues, is not essential for catalytic activity. Full-length XYLA and a fusion enzyme, consisting of the N-terminal 100 residues of XYLA linked to mature alkaline phosphatase, bound tightly to crystalline cellulose (Avicel), but not to xylan. The capacity of truncated derivatives of the xylanase to bind polysaccharides was investigated. XYLA lacking the first 13 N-terminal amino acids d

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8

Zhou, Xuesong, and Yong Huang. "Cellulose derivative-based cholesteric networks." Journal of Applied Polymer Science 96, no. 5 (2005): 1648–53. http://dx.doi.org/10.1002/app.21617.

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9

Danilevicius, Almantas, Justina Dobiliene, Christoph Wutz, and Jolanta Liesiene. "Phenoxyhydroxypropylhydroxyethylcellulose—new amphiphilic cellulose derivative." Cellulose 14, no. 4 (2007): 321–29. http://dx.doi.org/10.1007/s10570-006-9105-9.

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10

Nechifor, Aurelia Cristina, Andreia Pîrțac, Paul Constantin Albu, et al. "Recuperative Amino Acids Separation through Cellulose Derivative Membranes with Microporous Polypropylene Fiber Matrix." Membranes 11, no. 6 (2021): 429. http://dx.doi.org/10.3390/membranes11060429.

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The separation, concentration and transport of the amino acids through membranes have been continuously developed due to the multitude of interest amino acids of interest and the sources from which they must be recovered. At the same time, the types of membranes used in the sepa-ration of the amino acids are the most diverse: liquids, ion exchangers, inorganic, polymeric or composites. This paper addresses the recuperative separation of three amino acids (alanine, phe-nylalanine, and methionine) using membranes from cellulosic derivatives in polypropylene ma-trix. The microfiltration membranes

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11

Journal, Baghdad Science. "Effect of 1,4-Napthaquinone (NQ) and benzophenone (BPH)on the photodegradation and biodegradation of methyl cellulose film." Baghdad Science Journal 7, no. 1 (2010): 737–44. http://dx.doi.org/10.21123/bsj.7.1.737-744.

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The induced photodegradation of methyl cellulose (MC) films in air was investigated in the absence and presence of aromatic carbonyl compounds(photosenssitizers): 1,4-naphthaquinone (NQ) and benzophenone (BPH) by accelerated weathering tester. The addition of (0.01 wt %) of low molecular weight aromatic carbonyl compounds to cellulose derivatives films(25µm in thickness) enhanced the photodegradation of the polymer films.The photodegradation rate was measured by the increase in carbonyl absorbance. Decreases in solution viscosity and reduction of molecular weight were also observed in the irra

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12

Xu, Yu Zhi, Ling Li, Chun Peng Wang, and Fu Xiang Chu. "Preparation and Properties of Internally Plasticized Bio-Based Film." Advanced Materials Research 236-238 (May 2011): 321–24. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.321.

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This paper demonstrated acylation of cellulose with long chain fatty acid and internally plasticized cellulose films obtained by casting. The degrees of substitution (DS) and molar yields of fatty acid, Ts-Cl amounts and reaction time, and as well as the property of final products were studied. Partially derivative celluloses presented glass transition compared to starting cellulose. However, thermal behaviors of the internally plasticized esters with different DS were similar. Dynamic mechanical thermal analysis (DMTA) in tension mode revealed separate relaxations, denoted α and β, correspond

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13

Murayama, Seigo, Ikuo Motono, Kento Mizui, Kenji Kondoh, Makoto Hanabata, and Satoshi Takei. "Gas-Permeable Microimprint Template Derived from Cellulose Nanofiber Derivatives for Mechanical Properties." Journal of Nanomaterials 2019 (March 18, 2019): 1–7. http://dx.doi.org/10.1155/2019/5180460.

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A gas-permeable template has lower mechanical properties compared to non-gas-permeable metal templates. Therefore, it is difficult to mass-produce by increasing the area of the gas-permeable template. In this study, we have developed a new gas-permeable template with cellulose nanofiber (CNF) derivatives added to improve the mechanical properties of gas-permeable templates. The reinforcing effect by the CNF derivative added was investigated by a tensile test. As a result, it was shown that Young’s modulus was increased about 2 to 3 times by the addition of 2-5 wt% CNF derivative. Also, it was

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14

Heinze, T., J. A. Camacho G�mez, and G. Haucke. "Synthesis and characterization of the novel cellulose derivative dansyl cellulose." Polymer Bulletin 37, no. 6 (1996): 743–49. http://dx.doi.org/10.1007/bf00295772.

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15

Zhou, Shengde, F. C. Davis, and L. O. Ingram. "Gene Integration and Expression and Extracellular Secretion of Erwinia chrysanthemi Endoglucanase CelY (celY) and CelZ (celZ) in EthanologenicKlebsiella oxytoca P2." Applied and Environmental Microbiology 67, no. 1 (2001): 6–14. http://dx.doi.org/10.1128/aem.67.1.6-14.2001.

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ABSTRACT The development of methods to reduce costs associated with the solubilization of cellulose is essential for the utilization of lignocellulose as a renewable feedstock for fuels and chemicals. One promising approach is the genetic engineering of ethanol-producing microorganisms that also produce cellulase enzymes during fermentation. By starting with an ethanologenic derivative (strain P2) ofKlebsiella oxytoca M5A1 with the native ability to metabolize cellobiose, the need for supplemental β-glucosidase was previously eliminated. In the current study, this approach has been extended by

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16

Pandey, S. N. "Derivative infrared spectroscopy of cotton cellulose." Journal of Applied Polymer Science 34, no. 3 (1987): 1199–208. http://dx.doi.org/10.1002/app.1987.070340327.

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17

Almeida, P. L., G. Lavareda, C. Nunes De Carvalho, et al. "Flexible cellulose derivative PDLC type cells." Liquid Crystals 29, no. 3 (2002): 475–77. http://dx.doi.org/10.1080/02678290110113487.

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18

Sunardi, Sunardi, Wiwin Tyas Istikowati, Norhidayah Norhidayah, Dahlena Ariyani, and Azlan Kamari. "Characterization of microcrystalline cellulose from fast-growing species Artocarpus elasticus." Sustinere: Journal of Environment and Sustainability 5, no. 1 (2021): 1–8. http://dx.doi.org/10.22515/sustinere.jes.v5i1.156.

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Microcrystalline cellulose is an important derivative of cellulosic material obtained from wood and non-wood sources, and is used for pharmaceutical, food, cosmetics, and other industries. The aim of this study was to determine the effect of various hydrochloric acid concentrations on the characteristics of cellulose microcrystals isolated from terap wood (Artocarpus elasticus). The microcrystalline cellulose was hydrolyzed using hydrochloric acid, at concentrations of 1.5 N, 2.5 N, and 3.5 N for 15 minutes, and within a temperature range of 100-105o C. Thesamples were then analyzed for change

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19

Ali, Imran, Hafiz Muzzammel Rehman, Muhammad Usman Mirza, et al. "Enhanced Thermostability and Enzymatic Activity of cel6A Variants from Thermobifida fusca by Empirical Domain Engineering." Biology 9, no. 8 (2020): 214. http://dx.doi.org/10.3390/biology9080214.

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Cellulases are a set of lignocellulolytic enzymes, capable of producing eco-friendly low-cost renewable bioethanol. However, low stability and hydrolytic activity limit their wide-scale applicability at the industrial scale. In this work, we report the domain engineering of endoglucanase (cel6A) of Thermobifida fusca to improve their catalytic activity and thermal stability. Later, enzymatic activity and thermostability of the most efficient variant named as cel6A.CBC was analyzed by molecular dynamics simulations. This variant demonstrated profound activity against soluble and insoluble cellu

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20

Durrant, A. J., J. Hall, G. P. Hazlewood, and H. J. Gilbert. "The non-catalytic C-terminal region of endoglucanase E from Clostridium thermocellum contains a cellulose-binding domain." Biochemical Journal 273, no. 2 (1991): 289–93. http://dx.doi.org/10.1042/bj2730289.

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Mature endoglucanase E (EGE) from Clostridium thermocellum consists of 780 amino acid residues and has an Mr of 84,016. The N-terminal 334 amino acids comprise a functional catalytic domain. Full-length EGE bound to crystalline cellulose (Avicel) but not to xylan. Bound enzyme could be eluted with distilled water. The capacity of truncated derivatives of the enzyme to bind cellulose was investigated. EGE lacking 109 C-terminal residues (EGEd) or a derivative in which residues 367-432 of the mature form of the enzyme had been deleted (EGEb), bound to Avicel, whereas EGEa and EGEc, which lack 41

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21

Yang, Yunlong, Longchu Song, Chang Peng, Enhui Liu, and Haibo Xie. "Activating cellulose via its reversible reaction with CO2 in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene for the efficient synthesis of cellulose acetate." Green Chemistry 17, no. 5 (2015): 2758–63. http://dx.doi.org/10.1039/c5gc00115c.

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Reversible reaction of cellulose with CO<sub>2</sub> in DMSO/DBU results in a derivative dissolution of cellulose, which can be applied for the efficient acetylation of cellulose to afford cellulose acetates with degrees of substitution from 1.78–2.89.

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22

Mohan, Tamilselvan, Cíntia Salomão Pinto Zarth, Aleš Doliška, et al. "Interactions of a cationic cellulose derivative with an ultrathin cellulose support." Carbohydrate Polymers 92, no. 2 (2013): 1046–53. http://dx.doi.org/10.1016/j.carbpol.2012.10.026.

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23

Zhao, Guanglei, Fengli Wang, Xiongfei Lang, Beihai He, Junrong Li, and Xiaofeng Li. "Facile one-pot fabrication of cellulose nanocrystals and enzymatic synthesis of its esterified derivative in mixed ionic liquids." RSC Advances 7, no. 43 (2017): 27017–23. http://dx.doi.org/10.1039/c7ra02570j.

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24

Bukharov, Sergey Vladimirovich, Yuliya Maskhutovna Sadykova, Timur Erkinovich Umarov, et al. "SYNTHESIS AND ANTIRADICAL ACTIVITY OF HINDERED PHENOLIC DERIVATIVES OF FLAX CELLULOSE." chemistry of plant raw material, no. 2 (June 10, 2020): 47–54. http://dx.doi.org/10.14258/jcprm.2020026278.

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The modification of powdered ultradisperse cellulose by hindered phenol fragments was carried out. The modification was carried out by reacting cellulose tosylate with 3-(3',5'-ditert-butyl-4'-hydroxyphenyl) propionic acid hydrazide and 3,5-ditert-butyl-4-hydroxybenzyl dimethylamine in DMF at 100 ○C for 16–30 hours. Samples of modified cellulose were characterized by spectroscopy IR and 1H NMR. From the of elemental analysis data, the degree of substitution of cellulose derivatives by hindered phenol units was calculated. The antiradical activity of the obtained samples in their reactions with

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25

Bourlinos, Athanasios B., Ioannis Panagiotopoulos, Dimitrios Niarchos, and Dimitrios Petridis. "Hydrophilic Co–Pt Alloy Nanoparticles: Synthesis, Characterization, and Perspectives." Journal of Materials Research 19, no. 4 (2004): 1227–33. http://dx.doi.org/10.1557/jmr.2004.0159.

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Hydrophilic Co–Pt alloy nanoparticles nearing the equiatomic ratio and dispersedin water-soluble sodium carboxymethyl cellulose were synthesized by the aqueous reduction of CoCl2⋅6H2O and [Pt(NH3)4]Cl2⋅H2O with NaBH4 in presence of the cellulosic derivative. The as-received Co–Pt nanoparticles in the cellulosic matrix possess a disordered fcc structure that, upon calcination under an Ar atmosphereand carbonization of the cellulosic mantle of the particles, transformed to an ordered fcc phase. Both as-synthesized and calcined samples are magnetically soft at room temperature and exhibit a stron

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Hirano, Katsuaki, Satoshi Nihei, Hiroki Hasegawa, Mitsuru Haruki, and Nobutaka Hirano. "Stoichiometric Assembly of the Cellulosome Generates Maximum Synergy for the Degradation of Crystalline Cellulose, as Revealed byIn VitroReconstitution of the Clostridium thermocellum Cellulosome." Applied and Environmental Microbiology 81, no. 14 (2015): 4756–66. http://dx.doi.org/10.1128/aem.00772-15.

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ABSTRACTThe cellulosome is a supramolecular multienzyme complex formed by species-specific interactions between the cohesin modules of scaffoldin proteins and the dockerin modules of a wide variety of polysaccharide-degrading enzymes. Cellulosomal enzymes bound to the scaffoldin protein act synergistically to degrade crystalline cellulose. However, there have been few attempts to reconstitute intact cellulosomes due to the difficulty of heterologously expressing full-length scaffoldin proteins. We describe the synthesis of a full-length scaffoldin protein containing nine cohesin modules, CipA;

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27

González, Francisco, Pilar Tiemblo, and Mario Hoyos. "In-Situ Approaches for the Preparation of Polythiophene-Derivative Cellulose Composites with High Flexibility and Conductivity." Applied Sciences 9, no. 16 (2019): 3371. http://dx.doi.org/10.3390/app9163371.

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Composite materials of conjugated polymers/cellulose were fabricated by incorporating different polythiophene-derivative polymers: Poly(3,4-ethylenedioxythiophene) (PEDOT) and an alkylated derivative of poly(3,4-propylenedioxythiophene) (PProDOT). These conjugated polythiophenes were deposited by casting or spray coating methodologies onto three different cellulose substrates: Conventional filters papers as cellulose acetate, cellulose grade 40 Whatman® and cellulose membranes prepared from cellulose microfibers. The preparation of composite materials was carried out by two methodologies: (i)

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28

HAMATSU, Takao, Kazuhiro HUKUDOME, Jun-ichi HIROSE, and Minako ITO. "Structure and Some Characteristics of a Novel Cellulose Derivative Cellulose Nitrate Carboxymethyl Ether." Journal of the Japan Society of Colour Material 68, no. 12 (1995): 741–51. http://dx.doi.org/10.4011/shikizai1937.68.741.

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29

Landolsi, Imen, Narjes Rjiba, Mohamed Hamdaoui, Omar Harzallah, and Chedly Boudokhane. "Homogeneous microwave-assisted carboxymethylation from totally chlorine free bleached olive tree pruning residues pulp." Journal of the Serbian Chemical Society, no. 00 (2021): 46. http://dx.doi.org/10.2298/jsc210401046l.

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This study deals with a new methodology for carboxymethyl cellulose (CMC) production from olive pruning residues, agricultural by-products. Cellulose was extracted by Soda-anthraquinone pulping process, and the pulp bleaching was carried out using totally chlorine free (TCF) bleaching. Then, CMC microwave-assisted synthesis was carried out in a homogeneous media, using DMA/LiCl as a cellulose solvent. A Box-Behnken design was applied in order to evaluate which parameters of the carboxymethylation process (viz. reaction time, reaction temperature, and amount of monochloroacetic acid) affect the

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Bojanic, Vaso. "Optimization of cellulose acrylate and grafted 4-vinylpyridine and 1-vinylimidazole synthesis." Chemical Industry 64, no. 6 (2010): 529–35. http://dx.doi.org/10.2298/hemind100401043b.

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Optimization of cellulose acrylate synthesis by reaction with sodium cellulosate and acryloyl chloride was carried out. Optimal conditions for conducting the synthesis reaction of cellulose acrylate were as follows: the molar ratio of cellulose/potassium-t-butoxide/acryloyl chloride was 1:3:10 and the optimal reaction time was 10 h. On the basis of elemental analysis with optimal conditions for conducting the reaction of cellulose acrylate, the percentage of substitution of glucose units in cellulose Y = 80.7%, and the degree of substitution of cellulose acrylate DS = 2.4 was determined. The g

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Sinnaeve, G., P. Dardenne, and R. Agneessens. "Global or Local? A Choice for NIR Calibrations in Analyses of Forage Quality." Journal of Near Infrared Spectroscopy 2, no. 3 (1994): 163–75. http://dx.doi.org/10.1255/jnirs.43.

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This paper investigates the effect of spectral data pre-treatment by using scatter correction techniques, detrending and derivatives on the standard error of NIR predictive models. It is shown that no particular spectral pre-treatment or no single derivative works best for the three constituents (protein, cellulose, organic matter digestibility) of the three forage databases which we investigated (grass-hay, tropical forages, maize whole plants). The best analytical results are obtained with SNVD, MSC or WMSC treatments. The best results are obtained with a first or second derivative with a se

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32

Kurematsu, Kazuho, Satoshi Takei, Kento Mizui, and Makoto Hanabata. "Development of Cellulose Derivative Mold for Imprint Lithography." Journal of Photopolymer Science and Technology 32, no. 1 (2019): 131–36. http://dx.doi.org/10.2494/photopolymer.32.131.

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SHIRAKI, Tomohiro, Takayuki ISHIHARA, and Norio NEMOTO. "Mechanical Properties of Cellulose Derivative/Zein Blend Films." KOBUNSHI RONBUNSHU 58, no. 11 (2001): 598–605. http://dx.doi.org/10.1295/koron.58.598.

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Kawamura, Kaito, Takatsugu Abera, and Hiroshi Nonaka. "Extrusion Molding of Cellulosic Fibers Using Cellulose Derivative." JAPAN TAPPI JOURNAL 72, no. 3 (2018): 321–27. http://dx.doi.org/10.2524/jtappij.72.321.

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Leguey, S., A. I. Ruiz, R. Fernandez, and J. Cuevas. "Resistant cellulose-derivative biopolymer templates in natural sepiolite." American Journal of Science 314, no. 6 (2014): 1041–63. http://dx.doi.org/10.2475/06.2014.03.

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Zhang, Qiongwen, Junyuan Zhang, Xia Wang, Jia Yu, and Xingjie Guo. "Enantioseparation of Eight Pairs of Tetralone Derivative Enantiomers on Cellulose Based Chiral Stationary Phase by HPLC." Current Pharmaceutical Analysis 16, no. 5 (2020): 539–47. http://dx.doi.org/10.2174/1573412915666181130111103.

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Background: Tetralone derivatives, important resources for the development of new drugs which can act in the treatment of central nervous system disorders or participate in synthesis reaction for the synthesis of various pharmaceuticals, have great research value and a bright prospect in exploitation. Methods: A novel chiral HPLC method for efficient enantioseparation of eight tetralone derivative enantiomers was developed on cellulose based CHIRALPAK IC chiral stationary phase under normal mode by investigating the effects of type and content of organic modifier, column temperature and flow r

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Zhu, Heng, Xiao Yan Lin, Xue Gang Luo, and Ying Li. "Characterization of Aminoalky Cellulose Adsorbent." Advanced Materials Research 287-290 (July 2011): 1365–68. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.1365.

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Aminoalky cellulose is a white, solid cellulose derivative, which could be used adsorbent in order to remove TNT, heavy metal and dyes due to the large of amino. In this paper, the preparation of aminoalky cellulose was reported, and the aminoalky cellulose was characterized by FT-IR, XRD, SEM and TG. The results showed that aminoalky cellulose was successfully prepared, an amorphous phase and a crystalline phase are included in the AmAC, and the decomposition temperature of AmAC was 288.23°C. Some surface properties of AmAC was measured, and the mean pore diameter and total pore volume of the

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Saraiva, Diogo V., Ricardo Chagas, Beatriz M. de Abreu, et al. "Flexible and Structural Coloured Composite Films from Cellulose Nanocrystals/Hydroxypropyl Cellulose Lyotropic Suspensions." Crystals 10, no. 2 (2020): 122. http://dx.doi.org/10.3390/cryst10020122.

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Lyotropic colloidal aqueous suspensions of cellulose nanocrystals (CNCs) can, after solvent evaporation, retain their chiral nematic arrangement. As water is removed the pitch value of the suspension decreases and structural colour-generating films, which are mechanically brittle in nature, can be obtained. Increasing their flexibility while keeping the chiral nematic structure and biocompatible nature is a challenging task. However, if achievable, this will promote their use in new and interesting applications. In this study, we report on the addition of different amounts of hydroxypropyl cel

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Ojha, Mini, NV Satheesh Madhav, and Anita Singh. "Synthesis and evaluation of sodium carboxymethyl cellulose azo polymer for colon specificity." International Current Pharmaceutical Journal 1, no. 8 (2012): 209–12. http://dx.doi.org/10.3329/icpj.v1i8.11252.

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Sodium carboxymethyl cellulose is an excellent pharmaceutical excipient. It possesses good filmability, mucoadhesivity, viscolising capacity and bindability. The current aim of our research work is to synthesize a novel colon targeting polymer by using sodium carboxymethyl cellulose and glycine for colon targeting and to screen its colon specificity by in-vitro release model. Sodium carboxymethyl cellulose was subjected for synthesizing its derivative with glycine using azo linkage. The azo polymeric conjugate was evaluated for its color, solubility, Rf value, melting point, IR and 1HNMR spect

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Eivazi, Alireza, Bruno Medronho, Björn Lindman, and Magnus Norgren. "On the Development of All-Cellulose Capsules by Vesicle-Templated Layer-by-Layer Assembly." Polymers 13, no. 4 (2021): 589. http://dx.doi.org/10.3390/polym13040589.

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Polymeric multilayer capsules formed by the Layer-by-Layer (LbL) technique are interesting candidates for the purposes of storage, encapsulation, and release of drugs and biomolecules for pharmaceutical and biomedical applications. In the current study, cellulose-based core-shell particles were developed via the LbL technique alternating two cellulose derivatives, anionic carboxymethylcellulose (CMC), and cationic quaternized hydroxyethylcellulose ethoxylate (QHECE), onto a cationic vesicular template made of didodecyldimethylammonium bromide (DDAB). The obtained capsules were characterized by

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Arnold, Luboš, and Jiří Smrt. "One step introduction of the activated carboxyl groups with long aliphatic arm onto hydroxyl groups containing polymers." Collection of Czechoslovak Chemical Communications 55, no. 5 (1990): 1321–25. http://dx.doi.org/10.1135/cccc19901321.

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Bis-N-hydroxysuccinimide ester of 1,10-decanediol bis-succinate (Ia) reacts with hydroxyl groups bearing polymers (Spheron, cellulose, Sephacryl) affording activated carboxyl group containing derivatives IIa. Analogous 4-nitrophenyl group bearing Spheron derivative IIb was prepared starting from bis-4-nitrophenyl ester of 1,10-decanediol bis-succinate (Ib). 3'-O-(4,4'-Dimethoxytriphenylmethyl)-2'-deoxythymidine 5'-(6-amino-1-hexyl)-phosphate (V) was developed as reagent to determine the extent of activated carboxyl groups. Attachment ranging from 3.1-7.3 μmol/g was achieved.

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GILL, Jaitinder, Jane E. RIXON, David N. BOLAM, et al. "The type II and X cellulose-binding domains of Pseudomonas xylanase A potentiate catalytic activity against complex substrates by a common mechanism." Biochemical Journal 342, no. 2 (1999): 473–80. http://dx.doi.org/10.1042/bj3420473.

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Xylanase A (Pf Xyn10A), in common with several other Pseudomonas fluorescens subsp. cellulosa polysaccharidases, consists of a Type II cellulose-binding domain (CBD), a catalytic domain (Pf Xyn10ACD) and an internal domain that exhibits homology to Type X CBDs. The Type X CBD of Pf Xyn10A, expressed as a discrete entity (CBDX) or fused to the catalytic domain (Pf Xyn10A′), bound to amorphous and bacterial microcrystalline cellulose with a Ka of 2.5×105 M-1. CBDX exhibited no affinity for soluble forms of cellulose or cello-oligosaccharides, suggesting that the domain interacts with multiple ce

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43

López-Beceiro, Jorge, Ana María Díaz-Díaz, Ana Álvarez-García, Javier Tarrío-Saavedra, Salvador Naya, and Ramón Artiaga. "A Logistic Approach for Kinetics of Isothermal Pyrolysis of Cellulose." Processes 9, no. 3 (2021): 551. http://dx.doi.org/10.3390/pr9030551.

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A kinetic model is proposed to fit isothermal thermogravimetric data obtained from cellulose in an inert atmosphere at different temperatures. The method used here to evaluate the model involves two steps: (1) fitting of single time-derivative thermogravimetric curves (DTG) obtained at different temperatures versus time, and (2) fitting of the rate parameter values obtained at different temperatures versus temperature. The first step makes use of derivative of logistic functions. For the second step, the dependence of the rate factor on temperature is evaluated. That separation of the curve fi

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Lopez, Sergio G., Luis Crovetto, Jose M. Alvarez-Pez, Eva M. Talavera, and Enrique San Román. "Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose." Photochem. Photobiol. Sci. 13, no. 9 (2014): 1311–20. http://dx.doi.org/10.1039/c4pp00150h.

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9-[1-(2-Methyl-4-methoxyphenyl)]-6-hydroxy-3H-xanthen-3-one (2-Me-4-OMe TG) is a fluorescein derivative dye whose adsorption on cellulose notably enhances its fluorescence and undergoes efficient energy transfer to Dabcyl.

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Liu, Xiaofei, Zongbao Liu, Li Wang, Shengsheng Zhang, and Hai Zhang. "Preparation and performance of composite films based on 2-(2-aminoethoxy) ethyl chitosan and cellulose." RSC Advances 7, no. 23 (2017): 13707–13. http://dx.doi.org/10.1039/c6ra26541c.

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Corder, Ria D., Prajesh Adhikari, Michael C. Burroughs, Orlando J. Rojas, and Saad A. Khan. "Cellulose nanocrystals for gelation and percolation-induced reinforcement of a photocurable poly(vinyl alcohol) derivative." Soft Matter 16, no. 37 (2020): 8602–11. http://dx.doi.org/10.1039/d0sm01376e.

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Hall, J., G. W. Black, L. M. A. Ferreira, et al. "The non-catalytic cellulose-binding domain of a novel cellulase from Pseudomonas fluorescens subsp. cellulosa is important for the efficient hydrolysis of Avicel." Biochemical Journal 309, no. 3 (1995): 749–56. http://dx.doi.org/10.1042/bj3090749.

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A genomic library of Pseudomonas fluorescens subsp. cellulosa DNA, constructed in lambda ZAPII, was screened for carboxymethyl-cellulase activity. The pseudomonad insert from a recombinant phage which displayed elevated cellulase activity in comparison with other cellulase-positive clones present in the library, was excised into pBluescript SK- to generate the plasmid pC48. The nucleotide sequence of the cellulase gene, designated celE, revealed a single open reading frame of 1710 bp that encoded a polypeptide, defined as endoglucanase E (CelE), of M(r) 59663. The deduced primary structure of

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Junio, Febri, Rina Desni Yetti, and Ridho Asra. "IR SPECTRUMS AND CHARACTERISTICS OF Na-CMC FOUND IN SEVERAL TYPES OF PLANTS: A REVIEW." International Research Journal of Pharmacy 11, no. 11 (2020): 13–20. http://dx.doi.org/10.7897/2230-8407.111192.

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Natrium carboxymethyl cellulose (Na-CMC) is a cellulose derivative that is produced commercially in greater amounts than other cellulose derivatives. Natrium carboxymethyl cellulose (Na-CMC) is a linear cellulose polymer and is an anion compound that is biodegradable, odourless, colourless, non-toxic, tasteless, flexible and transparent. Natrium carboxymethyl cellulose (Na-CMC) is usually found in the form of granules or powders which are soluble in water but cannot dissolve in organic solutions. Natrium carboxymethyl cellulose (Na-CMC) has a pH range of 6.5-8 and is stable in a pH range of 2-

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Zhang, Changde, Loren M. Price, and William H. Daly. "Synthesis and Characterization of a Trifunctional Aminoamide Cellulose Derivative." Biomacromolecules 7, no. 1 (2006): 139–45. http://dx.doi.org/10.1021/bm050465n.

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SAKELLARIOU, P. "Interactions in cellulose derivative films for oral drug delivery." Progress in Polymer Science 20, no. 5 (1995): 889–942. http://dx.doi.org/10.1016/0079-6700(95)00008-4.

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