“Water‐Soluble Cellulose Derivatives”

2014 ◽  
Vol 70 (9) ◽  
pp. P-452-P-457 ◽  
Author(s):  
KAZUHISA HAYAKAWA
Keyword(s):  
Water Soluble ◽  
Cellulose Derivatives

WATER-SOLUBLE CELLULOSE DERIVATIVES*

1960 ◽  
Vol 12 (1) ◽  
pp. 237-244 ◽  
Author(s):  
R. E. M. Davies ◽  
J. M. Rowson
Keyword(s):  
Water Soluble ◽  
Cellulose Derivatives

scholarly journals Synthesis of selectively modified cellulose derivatives via reductive amination of 2-oxy- and 3-oxy-cellulose intermediates

1984 ◽  
Vol 62 (2) ◽  
pp. 260-262 ◽  
Author(s):  
Manssur Yalpani ◽  
Laurance D. Hall ◽  
Jacques Defaye ◽  
Andrée Gadelle
Keyword(s):  
Crown Ether ◽  
Reductive Amination ◽  
Ammonium Acetate ◽  
Water Soluble ◽  
Cellulose Derivatives ◽  
Oxidized Cellulose ◽  
Sodium Cyanoborohydride ◽  
Chromium Tricarbonyl ◽  
Derivatives Of ◽  
Modified Cellulose

Diamagnetic and paramagnetic amine derivatives of cellulose have been prepared from selectively oxidized cellulose precursors via the reductive amination method using sodium cyanoborohydride. 4-Amino-2,2,6,6-tetramethylpiperidine-1-oxyl was employed in the syntheses of nitroxide spin labelled cellulose derivatives 4 and 5 from 3-oxy-cellulose (1) and 6-O-triphenylmethyl-2-oxy-cellulose (2). Conversion of the linear polymer 1 into a highly branched, water soluble 3-deoxy-cellulose derivative 6 was accomplished by attachment of glucosamine side chains. 3-Amino-3-deoxy-cellulose 7 was obtained using ammonium acetate. A novel type of organometallic cellulose conjugate 8 was prepared by condensation of 2 and p-toluidine chromium tricarbonyl. Similarly, 1,10-diazo-18-crown-6 was added to 2 to form the crown ether derivative 9. The synthetic strategies involving either 6-O protected or unprotected oxy-cellulose intermediates are compared in terms of reaction yields and product properties.

scholarly journals Properties of cement mortars modified with water-soluble cellulose derivatives.

1987 ◽  
Vol 44 (3) ◽  
pp. 179-183 ◽  
Author(s):  
Tadaya KATO ◽  
Hisayoshi MAEDA ◽  
Akira TAKAHASHI
Keyword(s):  
Water Soluble ◽  
Cellulose Derivatives ◽  
Cement Mortars

scholarly journals Water-Soluble Cellulose Derivatives Are Sustainable Additives for Biomimetic Calcium Phosphate Mineralization

Inorganics ◽  
2016 ◽  
Vol 4 (4) ◽  
pp. 33 ◽  
Author(s):  
Andreas Taubert ◽  
Christian Balischewski ◽  
Doreen Hentrich ◽  
Thomas Elschner ◽  
Sascha Eidner ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Water Soluble ◽  
Cellulose Derivatives ◽  
Phosphate Mineralization

Water-Soluble Cellulose Derivatives as Suitable Matrices for Multifunctional Materials

2019 ◽  
Vol 20 (7) ◽  
pp. 2786-2795 ◽  
Author(s):  
Mikel Rincón-Iglesias ◽  
Erlantz Lizundia ◽  
Senentxu Lanceros-Méndez
Keyword(s):  
Water Soluble ◽  
Cellulose Derivatives ◽  
Multifunctional Materials

scholarly journals Partially Acetylated Cellulose Dissolved in Aqueous Solution: Physical Properties and Enzymatic Hydrolysis

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1734 ◽  
Author(s):  
Alfassi ◽  
Rein ◽  
Shpigelman ◽  
Cohen
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Enzymatic Hydrolysis ◽  
Cellulose Acetate ◽  
Persistence Length ◽  
Water Soluble ◽  
High Rate ◽  
Cellulose Derivatives ◽  
Molecular Aggregation ◽  
Cellulose Dissolution

Cellulose acetate is one of the most important cellulose derivatives. The use of ionic liquids in cellulose processing was recently found to act both as a solvent and also as a reagent. A recent study showed that cellulose dissolution in the ionic liquid 1-ethyl-3-methylimidazoliumacetate (EMIMAc) mixed with dichloromethane (DCM) resulted in controlled homogenous cellulose acetylation; yielding water-soluble cellulose acetate (WSCA). This research investigated the properties of cellulose acetate prepared in this manner, in an aqueous solution. The results revealed that WSCA fully dissolves in water, with no significant sign of molecular aggregation. Its conformation in aqueous solution exhibited a very large persistence length, estimated as over 10 nm. The WSCA exhibited surface activity, significantly reducing the surface tension of water. Because of the molecular dissolution of WSCA in water, augmented by its amphiphilicity, aqueous solutions of WSCA exhibited an overwhelmingly high rate of enzymatic hydrolysis.

Fractionation of wood polymers by carboxymethylation: Exploring the strategy

TAPPI Journal ◽  
2012 ◽  
Vol 11 (1) ◽  
pp. 29-37 ◽  
Author(s):  
SHANG-NING CHIEN ◽  
THOMAS E. AMIDON ◽  
YUAN-ZONG LAI
Keyword(s):  
Industrial Applications ◽  
Water Soluble ◽  
Hot Water ◽  
Insoluble Residue ◽  
Cellulose Derivatives ◽  
Initial Water ◽  
Pre Treatment ◽  
Cellulose Component ◽  
Derivatives Of

We explored the feasibility of fractionating wood polymers in situ by carboxymethylation to yield the carboxymethyl derivatives of cellulose (CMC), hemicelluloses, and lignin for potential industrial applications. The initial water-soluble materials formed were a mixture of hemicelluloses and cellulose derivatives, and also contained some lignin (3%–5%). Interestingly, the water-insoluble residue after another carboxymethylation treatment gave essentially a CMC product containing less than 1% of residual lignin. Thus, the bulk of wood lignin is less reactive than the polysaccharide components under typical carboxymethylation conditions. Also, a hot water pre-extraction or dilute acid pre-treatment of wood samples was found to significantly enhance the reactivity of the cellulose component. A preextraction approach would facilitate CMC preparation and also provide the flexibility to convert the extracted hemicelluloses to other bio-based fuels or materials.

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