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Thematische Bibliographien / Cationic Cellulose Derivative / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Cationic Cellulose Derivative“

Autor: Grafiati

Veröffentlicht am 29. Juni 2021

Zuletzt aktualisiert am 8. Februar 2022

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1

Mohan, Tamilselvan, Cíntia Salomão Pinto Zarth, Aleš Doliška, Rupert Kargl, Thomas Grießer, Stefan Spirk, Thomas Heinze und Karin Stana-Kleinschek. „Interactions of a cationic cellulose derivative with an ultrathin cellulose support“. Carbohydrate Polymers 92, Nr. 2 (Februar 2013): 1046–53. http://dx.doi.org/10.1016/j.carbpol.2012.10.026.

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2

Eivazi, Alireza, Bruno Medronho, Björn Lindman und Magnus Norgren. „On the Development of All-Cellulose Capsules by Vesicle-Templated Layer-by-Layer Assembly“. Polymers 13, Nr. 4 (16.02.2021): 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 dynamic light scattering (DLS), ζ potential measurements, and high-resolution scanning electron microscopy (HR-SEM). DLS measurements reveal that the size of the particles can be tuned from a hundred nanometers with a low polydispersity index (deposition of 2 layers) up to micrometer scale (deposition of 6 layers). Upon the deposition of each cellulose derivative, the particle charge is reversed, and pH is observed to considerably affect the process thus demonstrating the electrostatic driving force for LbL deposition. The HR-SEM characterization suggests that the shape of the core-shell particles formed is reminiscent of the spherical vesicle template. The development of biobased nano- and micro-containers by the alternating deposition of oppositely charged cellulose derivatives onto a vesicle template offers several advantages, such as simplicity, reproducibility, biocompatibility, low-cost, mild reaction conditions, and high controllability over particle size and composition of the shell.

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3

Gao, Xin, Keli Chen, Heng Zhang und Xuejing Yan. „Characterization of cationic parenchyma cellulose derivative by rapid preparation of low microwave power“. Iranian Polymer Journal 24, Nr. 9 (24.07.2015): 747–58. http://dx.doi.org/10.1007/s13726-015-0363-y.

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4

Terada, Eiji, Yulia Samoshina, Tommy Nylander und Björn Lindman. „Adsorption of Cationic Cellulose Derivative/Anionic Surfactant Complexes onto Solid Surfaces. II. Hydrophobized Silica Surfaces“. Langmuir 20, Nr. 16 (August 2004): 6692–701. http://dx.doi.org/10.1021/la049922w.

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5

Devarayan, Kesavan, Masahiro Miyamoto, Masakazu Hachisu, Jun Araki, Viswanathamurthi Periasamy und Kousaku Ohkawa. „Cationic derivative of electrospun non-woven cellulose-chitosan composite fabrics for immobilization of aminoacylase-I“. Textile Research Journal 83, Nr. 18 (08.03.2013): 1918–25. http://dx.doi.org/10.1177/0040517513478457.

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6

HAYASHI, Tsuyoshi, Hiroyuki KATO, Jun ASANO und Yoshiaki MIZUNO. „Deflocculation of SiC Slips with a Cationic Cellulose Derivative and Its Effects on the Sintered Density“. Journal of the Ceramic Society of Japan 105, Nr. 1221 (1997): 428–32. http://dx.doi.org/10.2109/jcersj.105.428.

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7

Sirviö, Juho, Anu Honka, Henrikki Liimatainen, Jouko Niinimäki und Osmo Hormi. „Synthesis of highly cationic water-soluble cellulose derivative and its potential as novel biopolymeric flocculation agent“. Carbohydrate Polymers 86, Nr. 1 (August 2011): 266–70. http://dx.doi.org/10.1016/j.carbpol.2011.04.046.

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8

Sunasee, Rajesh, Erinolaoluwa Araoye, Dejhy Pyram, Usha D. Hemraz, Yaman Boluk und Karina Ckless. „Cellulose nanocrystal cationic derivative induces NLRP3 inflammasome-dependent IL-1β secretion associated with mitochondrial ROS production“. Biochemistry and Biophysics Reports 4 (Dezember 2015): 1–9. http://dx.doi.org/10.1016/j.bbrep.2015.08.008.

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9

Beheshti, Neda, Giao T. M. Nguyen, Anna-Lena Kjøniksen, Kenneth D. Knudsen und Bo Nyström. „Structure and dynamics of aqueous mixtures of an anionic cellulose derivative and anionic or cationic surfactants“. Colloids and Surfaces A: Physicochemical and Engineering Aspects 279, Nr. 1-3 (Mai 2006): 40–49. http://dx.doi.org/10.1016/j.colsurfa.2005.12.031.

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10

Milano, Francesco, Maria Rachele Guascito, Paola Semeraro, Shadi Sawalha, Tatiana Da Ros, Alessandra Operamolla, Livia Giotta, Maurizio Prato und Ludovico Valli. „Nanocellulose/Fullerene Hybrid Films Assembled at the Air/Water Interface as Promising Functional Materials for Photo-electrocatalysis“. Polymers 13, Nr. 2 (12.01.2021): 243. http://dx.doi.org/10.3390/polym13020243.

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Cellulose nanomaterials have been widely investigated in the last decade, unveiling attractive properties for emerging applications. The ability of sulfated cellulose nanocrystals (CNCs) to guide the supramolecular organization of amphiphilic fullerene derivatives at the air/water interface has been recently highlighted. Here, we further investigated the assembly of Langmuir hybrid films that are based on the electrostatic interaction between cationic fulleropyrrolidines deposited at the air/water interface and anionic CNCs dispersed in the subphase, assessing the influence of additional negatively charged species that are dissolved in the water phase. By means of isotherm acquisition and spectroscopic measurements, we demonstrated that a tetra-sulfonated porphyrin, which was introduced in the subphase as anionic competitor, strongly inhibited the binding of CNCs to the floating fullerene layer. Nevertheless, despite the strong inhibition by anionic molecules, the mutual interaction between fulleropyrrolidines at the interface and the CNCs led to the assembly of robust hybrid films, which could be efficiently transferred onto solid substrates. Interestingly, ITO-electrodes that were modified with five-layer hybrid films exhibited enhanced electrical capacitance and produced anodic photocurrents at 0.4 V vs Ag/AgCl, whose intensity (230 nA/cm2) proved to be four times higher than the one that was observed with the sole fullerene derivative (60 nA/cm2).

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11

Zheng, Guo-Zhen, Gyosuke Meshitsuka und Atsushi Ishizu. „Properties of an amphoteric cellulose derivative containing anionic carboxymethyl and cationic 2-hydroxy-3-(trimethylammonio) propyl substituents“. Journal of Polymer Science Part B: Polymer Physics 33, Nr. 6 (30.04.1995): 867–77. http://dx.doi.org/10.1002/polb.1995.090330602.

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12

Bu, Guangjiu, Chaoxia Wang, Shaohai Fu und Anli Tian. „Water-soluble cationic chitosan derivative to improve pigment-based inkjet printing and antibacterial properties for cellulose substrates“. Journal of Applied Polymer Science 125, Nr. 3 (17.01.2012): 1674–80. http://dx.doi.org/10.1002/app.34916.

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13

Burke, S. E., und R. Palepu. „Interactions of a hydrophobically modified cationic cellulose ether derivative with amphiphiles of like charge in an aqueous environment“. Carbohydrate Polymers 45, Nr. 3 (Juli 2001): 233–44. http://dx.doi.org/10.1016/s0144-8617(00)00254-x.

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14

da Silva, Bruno Cesar Toledo, Erinolaoluwa Araoye, Usha Hemraz, Rajesh Sunasee und Karina Ckless. „Cellulose Nanocrystal (CNC) Cationic Derivative Induces NLRP3 S-Glutathionylation and IL-1β Secretion in a ROS-Dependent Manner“. Free Radical Biology and Medicine 76 (November 2014): S66. http://dx.doi.org/10.1016/j.freeradbiomed.2014.10.384.

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15

Li, Yuqi, Shengyan Ma, Xin Fang, Chunxian Wu, Hongling Chen, Wanqing Zhang, Meiwen Cao und Jianguo Liu. „Water hardness effect on the association and adsorption of cationic cellulose derivative/anionic surfactant mixtures for fabric softener application“. Colloids and Surfaces A: Physicochemical and Engineering Aspects 626 (Oktober 2021): 127031. http://dx.doi.org/10.1016/j.colsurfa.2021.127031.

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16

Li, Na, Liqun Yang, Chenglin Pan, Phei Er Saw, Meng Ren, Biyun Lan, Junfeng Wu et al. „Naturally-occurring bacterial cellulose-hyperbranched cationic polysaccharide derivative/MMP-9 siRNA composite dressing for wound healing enhancement in diabetic rats“. Acta Biomaterialia 102 (Januar 2020): 298–314. http://dx.doi.org/10.1016/j.actbio.2019.11.005.

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17

Xun, Tianrong, Wenjuan Li, Jinquan Chen, Fei Yu, Wei Xu, Qian Wang, Ruizhe Yu et al. „ADS-J1 Inhibits Semen-Derived Amyloid Fibril Formation and Blocks Fibril-Mediated Enhancement of HIV-1 Infection“. Antimicrobial Agents and Chemotherapy 59, Nr. 9 (08.06.2015): 5123–34. http://dx.doi.org/10.1128/aac.00385-15.

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ABSTRACTSemen-derived enhancer of viral infection (SEVI) is composed of amyloid fibrils that can greatly enhance HIV-1 infectivity. By its cationic property, SEVI promotes viral sexual transmission by facilitating the attachment and internalization of HIV-1 to target cells. Therefore, semen-derived amyloid fibrils are potential targets for microbicide design. ADS-J1 is an anionic HIV-1 entry inhibitor. In this study, we explored an additional function of ADS-J1: inhibition of SEVI fibril formation and blockage of SEVI-mediated enhancement of viral infection. We found that ADS-J1 bound to an amyloidogenic peptide fragment (PAP248–286, comprising amino acids 248 to 286 of the enzyme prostatic acid phosphatase), thereby inhibiting peptide assembly into amyloid fibrils. In addition, ADS-J1 binds to mature amyloid fibrils and antagonizes fibril-mediated enhancement of viral infection. Unlike cellulose sulfate, a polyanion that failed in clinical trial to prevent HIV-1 sexual transmission, ADS-J1 shows no ability to facilitate fibril formation. More importantly, the combination of ADS-J1 with several antiretroviral drugs exhibited synergistic effects against HIV-1 infection in semen, with little cytotoxicity to vaginal epithelial cells. Our results suggest that ADS-J1 or a derivative may be incorporated into a combination microbicide for prevention of the sexual transmission of HIV-1.

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18

Yagoub, Hajo, Liping Zhu, Mahmoud H. M. A. Shibraen, Ali A. Altam, Dafaalla M. D. Babiker, Songmiao Liang, Yan Jin und Shuguang Yang. „Complex Aerogels Generated from Nano-Polysaccharides and Its Derivatives for Oil–Water Separation“. Polymers 11, Nr. 10 (29.09.2019): 1593. http://dx.doi.org/10.3390/polym11101593.

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The complex aerogel generated from nano-polysaccharides, chitin nanocrystals (ChiNC) and TEMPO-oxidized cellulose nanofibers (TCNF), and its derivative cationic guar gum (CGG) is successfully prepared via a facile freeze-drying method with glutaraldehyde (GA) as cross-linkers. The complexation of ChiNC, TCNF, and CGG is shown to be helpful in creating a porous structure in the three-dimensional aerogel, which creates within the aerogel with large pore volume and excellent compressive properties. The ChiNC/TCNF/CGG aerogel is then modified with methyltrichlorosilane (MTCS) to obtain superhydrophobicity/superoleophilicity and used for oil–water separation. The successful modification is demonstrated through FTIR, XPS, and surface wettability studies. A water contact angle of 155° on the aerogel surface and 150° on the surface of the inside part of aerogel are obtained for the MTCS-modified ChiNC/TCNF/CGG aerogel, resulting in its effective absorption of corn oil and organic solvents (toluene, n-hexane, and trichloromethane) from both beneath and at the surface of water with excellent absorption capacity (i.e., 21.9 g/g for trichloromethane). More importantly, the modified aerogel can be used to continuously separate oil from water with the assistance of a vacuum setup and maintains a high absorption capacity after being used for 10 cycles. The as-prepared superhydrophobic/superoleophilic ChiNC/TCNF/CGG aerogel can be used as a promising absorbent material for the removal of oil from aqueous media.

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19

Giordano, Enrique D. V., Bárbara Bosio, Paola Camiscia, Guillermo A. Picó und Nadia Woitovich Valetti. „Cellulose and its cationic derivative obtained from soybean hull as a tool for the remediation of textile dyes in wastewater: Physicochemical characterization and molecular mechanism interaction“. Biocatalysis and Agricultural Biotechnology 36 (September 2021): 102139. http://dx.doi.org/10.1016/j.bcab.2021.102139.

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20

Shibraen, Mahmoud H. M. A., Chunyan Wang, Hajo Yagoub, Qian Yuan, Shuguang Yang und Jian Xu. „Interfacial complexation behavior of anionic and cationic cellulose derivatives“. RSC Adv. 4, Nr. 98 (2014): 55459–65. http://dx.doi.org/10.1039/c4ra06353h.

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21

Pitkänen, Leena, und Maija Tenkanen. „Field-Flow Fractionation of Cationic Cellulose Derivatives“. Chromatographia 82, Nr. 12 (06.09.2019): 1827–32. http://dx.doi.org/10.1007/s10337-019-03800-2.

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22

Pan, Yuanfeng, Qiuyang Xia und Huining Xiao. „Cationic Polymers with Tailored Structures for Rendering Polysaccharide-Based Materials Antimicrobial: An Overview“. Polymers 11, Nr. 8 (01.08.2019): 1283. http://dx.doi.org/10.3390/polym11081283.

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Antimicrobial polymers have attracted substantial interest due to high demands on improving the health of human beings via reducing the infection caused by various bacteria. The review presented herein focuses on rendering polysaccharides, mainly cellulosic-based materials and starch to some extent, antimicrobial via incorporating cationic polymers, guanidine-based types in particular. Extensive review on synthetic antimicrobial materials or plastic/textile has been given in the past. However, few review reports have been presented on antimicrobial polysaccharide, cellulosic-based materials, or paper packaging, especially. The current review fills the gap between synthetic materials and natural polysaccharides (cellulose, starch, and cyclodextrin) as substrates or functional additives for different applications. Among various antimicrobial polymers, particular attention in this review is paid to guanidine-based polymers and their derivatives, including copolymers, star polymer, and nanoparticles with core-shell structures. The review has also been extended to gemini surfactants and polymers. Cationic polymers with tailored structures can be incorporated into various products via surface grafting, wet-end addition, blending, or reactive extrusion, effectively addressing the dilemma of improving substrate properties and bacterial growth. Moreover, the pre-commercial trial conducted successfully for making antimicrobial paper packaging has also been addressed.

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23

Butrim, S. M., T. D. Bil’dyukevich, N. S. Butrim und T. L. Yurkshtovich. „Hydrogels Based on Cross-Linked Cationic Cellulose Derivatives“. Chemistry of Natural Compounds 56, Nr. 6 (November 2020): 1106–10. http://dx.doi.org/10.1007/s10600-020-03237-2.

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24

Ikeda, Isao, Yoshiaki Kurushima, Hisataka Takashima und Kimihiro Suzuki. „Cationic Graft Polymerization of 2-Oxazolines on Cellulose Derivatives“. Polymer Journal 20, Nr. 3 (März 1988): 243–50. http://dx.doi.org/10.1295/polymj.20.243.

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25

Salimi, Hamid, Fezzeh Aryanasab, Ali Reza Banazadeh, Meisam Shabanian und Farzad Seidi. „Designing syntheses of cellulose and starch derivatives with basic or cationic N -functions: part I-cellulose derivatives“. Polymers for Advanced Technologies 27, Nr. 1 (24.08.2015): 5–32. http://dx.doi.org/10.1002/pat.3599.

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26

Fouad, H., Lau Kia Kian, Mohammad Jawaid, Majed D. Alotaibi, Othman Y. Alothman und Mohamed Hashem. „Characterization of Microcrystalline Cellulose Isolated from Conocarpus Fiber“. Polymers 12, Nr. 12 (07.12.2020): 2926. http://dx.doi.org/10.3390/polym12122926.

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Conocarpus fiber is an abundantly available and sustainable cellulosic biomass. With its richness in cellulose content, it is potentially used for manufacturing microcrystalline cellulose (MCC), a cellulose derivative product with versatile industrial applications. In this work, different samples of bleached fiber (CPBLH), alkali-treated fiber (CPAKL), and acid-treated fiber (CPMCC) were produced from Conocarpus through integrated chemical process of bleaching, alkaline cooking, and acid hydrolysis, respectively. Characterizations of samples were carried out with Scanning Electron Microscope (SEM), Energy Dispersive X-ray (EDX), Fourier Transform Infrared-Ray (FTIR), X-ray Diffraction (XRD), Thermogravimetric (TGA), and Differential Scanning Calorimetry (DSC). From morphology study, the bundle fiber feature of CPBLH disintegrated into micro-size fibrils of CPMCC, showing the amorphous compounds were substantially removed through chemical depolymerization. Meanwhile, the elemental analysis also proved that the traces of impurities such as cations and anions were successfully eliminated from CPMCC. The CPMCC also gave a considerably high yield of 27%, which endowed it with great sustainability in acting as alternative biomass for MCC production. Physicochemical analysis revealed the existence of crystalline cellulose domain in CPMCC had contributed it 75.7% crystallinity. In thermal analysis, CPMCC had stable decomposition behavior comparing to CPBLH and CPAKL fibers. Therefore, Conocarpus fiber could be a promising candidate for extracting MCC with excellent properties in the future.

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JONES, R. T., und C. A. BROWN. „The behaviour of cationic cellulose derivatives containing fatty quat groups“. International Journal of Cosmetic Science 10, Nr. 5 (Oktober 1988): 219–29. http://dx.doi.org/10.1111/j.1467-2494.1988.tb00020.x.

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28

Sunasee, Rajesh, Usha D. Hemraz, Karina Ckless, James S. Burdick und Yaman Boluk. „Cationic Cellulose Nanocrystals: Synthesis, Characterization and Cytotoxicity Studies“. MRS Proceedings 1718 (2015): 91–96. http://dx.doi.org/10.1557/opl.2015.479.

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ABSTRACTCellulose nanocrystals (CNCs) have emerged as a new class of renewable material for various applications due to their remarkable properties and commercialization prospect. The relative low density, expected low cost, non-toxic character, uniform nanosize distribution, high aspect ratios, high surface area, thermal properties and high modulus of elasticity make CNCs attractive nanomaterials that recently prompted the industrial production of CNCs in North America. Surface functionalization of CNCs continues to be an exciting area of research for the design of novel CNC-based materials. In this work, we report the synthesis, characterization and cytotoxicity studies of novel cationic surface modified CNC derivatives. The negative surface of CNC was rendered positive after grafting with cationic polymers via surface-initiated living radical polymerization method. The modified CNCs were characterized by both spectroscopic and microscopic techniques. Their cytotoxicity effects were evaluated using MTT assay in two cell lines such as mouse macrophages (J774.A1) and human breast cancer (MCF7). Preliminary studies indicated that only one of the modified CNCs caused significant decrease in J774.A1 cell viability (50%), at the highest concentration tested (100 µg/mL). However this concentration is well above of what would be applicable for biomedical purposes. MCF7 cells were not affected by any of the cationic CNCs at any concentration. A detailed cytotoxicity study is currently underway to fully understand the interaction of these cationic CNCs with the biological systems for possible bio-inspired applications.

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ROOS, Peter, Åsa WESTLING und Ioannis S. CHRONAKIS. „Hydrophilic Monolayer Formation of Adsorbed Cationic Starch and Cationic Hydroxyethyl Cellulose Derivatives on Polyester Surfaces“. Bioscience, Biotechnology, and Biochemistry 68, Nr. 11 (Januar 2004): 2247–56. http://dx.doi.org/10.1271/bbb.68.2247.

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30

Liesiene, Jolanta. „Synthesis of water-soluble cationic cellulose derivatives with tertiary amino groups“. Cellulose 17, Nr. 1 (08.08.2009): 167–72. http://dx.doi.org/10.1007/s10570-009-9353-6.

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31

Lu, Min, Yan Yu Hu und Ri Yao Chen. „Preparation and Characterization of Bipolar Membranes Modified by Adding Multi-Carboxylic Metallophthalocyanine Derivatives into the Cation Layer“. Advanced Materials Research 936 (Juni 2014): 248–54. http://dx.doi.org/10.4028/www.scientific.net/amr.936.248.

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The multi-carboxylic metallophthalocyanine derivatives were added into carboxymethyl cellulose cation layer to prepare the modified carboxymethyl cellulose/chitosan bipolar membranes (CMC/CS BPMs), which were characterized using electric universal testing machine, contact angle measurer and so on. The results showed that the mechanical properties were increased after modification. Moreover, the ion exchange capacity, and the hydrophilicity of the modified CMC membrane dramatically rose. As the catalytic centers, the metallophthalocyanine derivatives sped up water splitting, decreased the membrane impedance and cell voltage. In comparison with the BPMs modified by mononuclear metallophthalocyanine derivatives, the catalytic ability for water splitting of the binuclear metallophthalocyanine derivatives (especially with different central metal ions) was enhanced. At the current density of 60 mA·cm-2, the cell voltage of the BPM modified by FeCoPc2(COOH)12 was only 5.3V.

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Piotrowska-Kirschling, Agnieszka, und Joanna Brzeska. „REVIEW OF CHITOSAN NANOMATERIALS FOR METAL CATION ADSORPTION“. Progress on Chemistry and Application of Chitin and its Derivatives XXV (30.09.2020): 51–62. http://dx.doi.org/10.15259/pcacd.25.004.

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Polysaccharides are polymers of long chains of monosaccharide units linked via glycosidic bonds. Starch, cellulose, chitin and their derivatives, such as chitosan, are examples of polysaccharides. Chitin is the second most common natural polysaccharide in the world (after cellulose). Chitin and chitosan are amino polysaccharides. Chitosan is often obtained by chemical, or sometimes enzymatic, deacetylation of chitin. These compounds are increasingly being modified to the nanometric scale. New engineering nanomaterials show better chemical, biological, mechanical, thermal, electrical and sorption properties than the primary materials. In this paper, the methods of chitosan nanomaterials synthesis and their adsorption properties of metal cations are discussed. As it is shown, the selected chitosan nanomaterials have promising adsorption properties of metal cations.

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Shchipunov, Yu A., und I. V. Postnova. „Alginate polyelectrolyte complexes with cationic hydroxyethyl cellulose derivatives: Role of the block structure“. Polymer Science Series A 48, Nr. 2 (Februar 2006): 171–76. http://dx.doi.org/10.1134/s0965545x06020118.

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34

Akhlaghi, Seyedeh Parinaz, Daryl Tiong, Richard M. Berry und Kam Chiu Tam. „Comparative release studies of two cationic model drugs from different cellulose nanocrystal derivatives“. European Journal of Pharmaceutics and Biopharmaceutics 88, Nr. 1 (September 2014): 207–15. http://dx.doi.org/10.1016/j.ejpb.2014.04.012.

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35

Gushikem, Yoshitaka, Edilson V. Benvenutti und Yuriy V. Kholin. „Synthesis and applications of functionalized silsesquioxane polymers attached to organic and inorganic matrices“. Pure and Applied Chemistry 80, Nr. 7 (01.01.2008): 1593–611. http://dx.doi.org/10.1351/pac200880071593.

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Organofunctionalized silsesquioxane polymers obtained in a water-soluble form can be used to coat various substrates such as SiO2, SiO2/Al2O3, Al2O3, cellulose/Al2O3, and graphite or, when obtained in a water-insoluble form, can be used directly. These organofunctionalized silsesquioxanes can also be attached to poly(dimethylsiloxane) (PDMS) polymers. The functional groups constituted by neutral amine groups or cationic groups (pyridinium, 3- and 4-picolinium, or 1,4-diazabicyclo[2.2.2]octane (DABCO), mono- or -dicationic) have relatively high affinity for metal ion in ethanol solutions, as shown by their stability constants. Materials containing attached cationic functional groups have also been efficiently used to immobilize various electroactive species and to construct electrochemical sensors for analytical applications. This work discusses the preparation of silsesquioxane derivatives, their characterization as prepared and when dispersed on several substrates, and comments on some applications of these materials, with an emphasis on the metal adsorption process and manufacture of electrochemical sensors.

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Terada, Eiji, Yulia Samoshina, Tommy Nylander und Björn Lindman. „Adsorption of Cationic Cellulose Derivatives/Anionic Surfactant Complexes onto Solid Surfaces. I. Silica Surfaces“. Langmuir 20, Nr. 5 (März 2004): 1753–62. http://dx.doi.org/10.1021/la035626s.

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37

Jia, Baoquan, Jinping Zhou und Lina Zhang. „Electrospun nano-fiber mats containing cationic cellulose derivatives and poly (vinyl alcohol) with antibacterial activity“. Carbohydrate Research 346, Nr. 11 (August 2011): 1337–41. http://dx.doi.org/10.1016/j.carres.2011.04.040.

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38

Sun, Chang, Zhiyong Huang, Jiaxin Wang, Liming Rao, Jingjing Zhang, Jiao Yu, Jinmei Du und Changhai Xu. „Modification of microcrystalline cellulose with pyridone derivatives for removal of cationic dyes from aqueous solutions“. Cellulose 23, Nr. 5 (05.08.2016): 2917–27. http://dx.doi.org/10.1007/s10570-016-1024-9.

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Merdoud, Asma, Meryem Mouffok, Abderrezzak Mesli, Nafa Chafi und Messaoud Chaib. „In vitro release study of 2-aminobenzothiazole from microspheres as drug carriers“. Journal of the Serbian Chemical Society 85, Nr. 4 (2020): 531–45. http://dx.doi.org/10.2298/jsc190326132m.

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The aim of the present study was the preparation of 2-aminobenzothiazole- loaded microspheres based on cellulose derivatives for controlled and prolonged release. Micro-encapsulation by the simple emulsion (O/W) solvent evaporation method was performed to prepare these formulations using two cellulose derivatives as matrices: ethyl cellulose (EC) and cellulose acetate butyrate (CAB). Optimization of the experimental parameters, such as the polymer/ solvent ratio, the matrix type, stirring speed and the number of blades, was performed to obtain a high encapsulation efficiency of the drug. The effect of the selected parameters on microsphere characteristics, as well as the release rate was investigated. SEM images show that the obtained microparticles were spherical in shape. The effective entrapment of 2-amino-benzothiazole (2-ABZT) in the microspheres was confirmed by FTIR spectroscopy and XRD diffraction analysis. The encapsulation efficiency was improved when the polymer concentration increased reaching 89 %. Microspheres in the size range of 61?278 ?m with EC and close to 113 ?m with CAB were obtained by varying the process conditions. The in vitro release kinetics of the cation of 2-ABZT were established at 37 ?C in simulated gastric medium pH 1.2 and the obtained data were analyzed according to the Fick law. The results showed that the surface morphology and encapsulation efficiency of the microspheres depended strongly on the polymer/solvent ratio and the release rate could be controlled by adjusting the process conditions.

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Araoye, Erinolaoluwa, Bruno Cesar Toledo da Silva, Usha Hemraz, Rajesh Sunasee und Karina Ckless. „Cellulose Nanocrystal (CNC) Cationic Derivatives Induce Secretion of IL-1 β and Generation of Mitochondrial ROS“. Free Radical Biology and Medicine 76 (November 2014): S59. http://dx.doi.org/10.1016/j.freeradbiomed.2014.10.363.

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41

Xie, Kongliang, Aiqin Hou und Yan Sun. „Chemical and morphological structures of modified novel cellulose with triazine derivatives containing cationic and anionic groups“. Carbohydrate Polymers 70, Nr. 3 (Oktober 2007): 285–90. http://dx.doi.org/10.1016/j.carbpol.2007.04.005.

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42

Xie, Kongliang, Aiqin Hou und Xiaojun Wang. „Dyeing and diffusion properties of modified novel cellulose with triazine derivatives containing cationic and anionic groups“. Carbohydrate Polymers 72, Nr. 4 (Juni 2008): 646–51. http://dx.doi.org/10.1016/j.carbpol.2007.10.005.

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43

Chen, Weisheng, Qinqin Zhang, Xiaoqi Lin, Kaisen Jiang und Dezhi Han. „The Degradation and Repolymerization Analysis on Solvolysis Liquefaction of Corn Stalk“. Polymers 12, Nr. 10 (13.10.2020): 2337. http://dx.doi.org/10.3390/polym12102337.

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One of the most effective and renewable utilization methods for lignocellulosic feedstocks is the transformation from solid materials to liquid products. In this work, corn stalk (CS) was liquified with polyethylene glycol 400 (PEG400) and glycerol as the liquefaction solvents, and sulfuric acid as the catalyst. The liquefaction conditions were optimized with the liquefaction yield of 95.39% at the reaction conditions of 150 °C and 120 min. The properties of CS and liquefaction residues (LRs) were characterized using ATR–FTIR, TG, elemental analysis and SEM. The chemical components of liquefied product (LP) were also characterized by GC–MS. The results indicated that the depolymerization and repolymerization reaction took place simultaneously in the liquefaction process. The depolymerization of CS mainly occurred at the temperature of <150 °C, and the repolymerization of biomass derivatives dominated at a higher temperature of 170 °C by the lignin derivatives repolymerization with cellulose derivatives, hemicellulose derivatives and PEG400 and self-condensation of lignin derivatives. The solvolysis liquefaction of CS could be classified into the mechanism of electrophilic substitution reaction attacked by the hydrogen cation.

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Ghemati, Djamila, und Djamel Aliouche. „Study of the Kinetics Adsorption of Organic Pollutants on Modified Cellulosic Polymer Using Ultraviolet-Visible Spectroscopy“. Journal of Spectroscopy 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/639717.

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We report a study on the formation of the complex acrylamidomethylated-β-cyclodextrin, then on the grafting on cellulosic polymer. The grafting is initiated by ceric ions Ce(IV) and confirmed by infrared spectroscopy analysis (FTIR). Scanning electron microscopy (SEM) analysis was carried out to evaluate properties of structure and surface of grafted polymers. The experiments of the study of adsorption of balance of phenol and hydroquinone and a reactive dye, acid dyes, and cationic dyes using ultraviolet-visible microscopy were made in aqueous solutions for 24 hours at different pH. Our results indicate formation of a permanent chemical bond betweenβ-cyclodextrin and polymers material. The cellulosic polymers can effectively be modified without significant change in the structural properties. Then, the results of organic pollutants adsorption in aqueous medium show the aptitude of the polymer modified to fix the phenol derivatives and synthetics dyes and used in the processing industrial liquid waste. The differences in adsorption capacities may be due to the effect of dye structure. The negative value of free energy change indicated the spontaneous nature of adsorption.

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Xie, K., A. Hou und Y. Chen. „The mathematical model of dye diffusion and adsorption on modified cellulose with triazine derivatives containing cationic and anionic groups“. Journal of Physics: Conference Series 96 (01.02.2008): 012127. http://dx.doi.org/10.1088/1742-6596/96/1/012127.

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46

Staccioli, Giuseppe, Alberto Sturaro und Rocco Rella. „Cation Exchange Capacity Tests on Some Lignocellulosic Materials Highlight Some Aspects of the Use of Copper as Wood Preservative“. Holzforschung 54, Nr. 2 (29.02.2000): 133–36. http://dx.doi.org/10.1515/hf.2000.023.

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Summary The stoichiometric validity of copper(II) salts in the assessing the cation exchange capacity of lignocellulosic materials with respect to sodium salts is determined on some materials like Populus euramericana, Pinus pinea, flax, hemp, cotton, and some of their derivatives. Copper exhibits the usual stoichiometry (bivalence) with saponified woods and Norman & Jenkins holocelluloses whereas it is present as bivalent and/or apparent monovalent ions in the other materials. The major groups responsible for cation exchange are the carboxyls of polyoses while hydroxyls seem inert at this reaction. Cation exchange of wood and raw fibers is, on the contrary, influenced by the structure of lignin. In fact, when it forms ester bonds with polyoses it causes the rising of copper apparently working as monovalent species. Lacking these bonds, lignin does not provoke any chemical interactions except for some isolated lignins. These data show that copper interacts mainly with polyoses, secondly with lignin if bonded to polyoses whereas cellulose seems to be weakly involved in these interactions. To improve the assumption of copper from preservative formulations mild saponification of woods is suggested since such treatment enhances the number of sites of exchange in polyoses.

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Selvanathan, Vidhya, Rosiyah Yahya, Mohd Hafidz Ruslan, Kamaruzzaman Sopian, Nowshad Amin, Majid Nour, Hatem Sindi, Muhyaddin Rawa und Md Akhtaruzzaman. „Organosoluble Starch-Cellulose Binary Polymer Blend as a Quasi-Solid Electrolyte in a Dye-Sensitized Solar Cell“. Polymers 12, Nr. 3 (27.02.2020): 516. http://dx.doi.org/10.3390/polym12030516.

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This work is a pioneer attempt to fabricate quasi-solid dye-sensitized solar cell (QSDDSC) based on organosoluble starch derivative. Rheological characterizations of the PhSt-HEC blend based gels exhibited viscoelastic properties favorable for electrolyte fabrication. From amplitude sweep and tack test analyses, it was evident that the inclusion of LiI improved the rigidity and tack property of the gels. On the other hand, the opposite was true for TPAI based gels, which resulted in less rigid and tacky electrolytes. The crystallinity of the gels was found to decline with increasing amount of salt in both systems. The highest photoconversion efficiency of 3.94% was recorded upon addition of 12.5 wt % TPAI and this value is one of the highest DSSC performance recorded for starch based electrolytes. From electrochemical impedance spectroscopy (EIS), it is deduced that the steric hindrance imposed by bulky cations aids in hindering recombination between photoanode and electrolyte.

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COMA, V., I. SEBTI, P. PARDON, A. DESCHAMPS und F. H. PICHAVANT. „Antimicrobial Edible Packaging Based on Cellulosic Ethers, Fatty Acids, and Nisin Incorporation To Inhibit Listeria innocua and Staphylococcus aureus“. Journal of Food Protection 64, Nr. 4 (01.04.2001): 470–75. http://dx.doi.org/10.4315/0362-028x-64.4.470.

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Edible cellulosic films made with hydroxypropylmethylcellulose (HPMC) have proven to be inadequate moisture barriers. To improve its water vapor barrier properties, different hydrophobic compounds were incorporated into the HPMC matrix. Some fatty acids and derivatives were included into the film-forming solution prior to film formation. Stearic acid was chosen because of its high capacity to reduce significantly the water vapor transmission rate. Antimicrobial activity of edible HPMC film was obtained by the incorporation of nisin into the film-forming solution. Nisin is an antimicrobial peptide effective against gram-positive bacteria. The inhibitory activity of this bacteriocin was tested for inhibition of Listeria innocua and Staphylococcus aureus. The use of stearic acid was observed to reduce the inhibitory activity of active HPMC film against both selected strains. This phenomenon may be explained by electrostatic interactions between the cationic nisin and the anionic stearic acid. Further studies showed that antimicrobial activity of film varied with the nature of the hydrophobic compound incorporated, in decreasing order: film without lipid, methylstearate film, and stearic acid film. This corroborated the idea of electrostatic interactions.

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Ulbrich, Marco, Sylvia Radosta, Birgit Kießler und Waltraud Vorwerg. „Interaction of cationic starch derivatives and cellulose fibres in the wet end and its correlation to paper strength with a statistical evaluation“. Starch - Stärke 64, Nr. 12 (07.09.2012): 972–83. http://dx.doi.org/10.1002/star.201200033.

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Gao, Wei, X. Michael Liu und Richard A. Gross. „Determination of molar mass and solution properties of cationic hydroxyethyl cellulose derivatives by multi-angle laser light scattering with simultaneous refractive index detection“. Polymer International 58, Nr. 10 (05.08.2009): 1115–19. http://dx.doi.org/10.1002/pi.2636.

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