Distribution of xanthate groups in cellulose xanthate

1959 ◽  
Vol 163 (2) ◽  
pp. 98-106 ◽  
Author(s):  
Koichi Yamada ◽  
Sadataka Mukoyama
Keyword(s):  
Cellulose Xanthate

High-speed determination of the degree of cellulose xanthate esterification

1973 ◽  
Vol 5 (3) ◽  
pp. 277-279 ◽  
Author(s):  
Yu. I. Kholkin ◽  
M. I. Shcherbatsevich
Keyword(s):  
High Speed ◽  
Cellulose Xanthate

Cellulose xanthate dissolution in aqueous caustic soda solutions

1973 ◽  
Vol 5 (1) ◽  
pp. 39-41
Author(s):  
V. G. Kulichikin ◽  
D. N. Arkhangelskii ◽  
E. B. Kostikova ◽  
A. P. Luvishis
Keyword(s):  
Caustic Soda ◽  
Cellulose Xanthate

scholarly journals Preparation and Properties of Viscose Rayon/O-carboxymethyl Chitosan Antibacterial Fibers

2011 ◽  
Vol 6 (3) ◽  
pp. 155892501100600 ◽  
Author(s):  
Youbo Di ◽  
Guoqiang Long ◽  
Huiqin Zhang ◽  
Qingshan Li
Keyword(s):  
Mechanical Properties ◽  
Viscose Rayon ◽  
Moisture Absorption ◽  
Cellulose Xanthate ◽  
Carboxymethyl Chitosan ◽  
Infrared Scanning ◽  
Transmission Electron ◽  
Structure Morphology ◽  
Viscose Process ◽  
Morphology And Mechanical Properties

Antimicrobial viscose rayon/O-carboxymethyl chitosan fibers (VCMFs) were manufactured by spinning the mixture of O-carboxymethyl chitosan (O-CMCS) xanthate and cellulose xanthate via the viscose process. The structure, morphology and mechanical properties were investigated by infrared, scanning electron microscopy, transmission electron microscope and tensile test. The results show that the blend fibers of cellulose and O-CMCS were satisfactorily prepared and the two polymers were mixed homogeneously. VCMFs display striation along the fiber similar to those of viscose rayon fibers, and their mechanical properties are close to that of viscose rayon. With O-CMCS blended, VCMFs showed good moisture absorption and antibacterial activity against E.coli.

Adsorption of Cadmium (II) from Aqueous Solutions by Peanut Shell Cellulose Modified with Carbon Disulphide

2013 ◽  
Vol 791-793 ◽  
pp. 24-27
Author(s):  
Qing Shan Pan ◽  
Dai Qi Li ◽  
Jian Qiang Li ◽  
Wei Liu ◽  
Mei Gui Ma ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Contact Time ◽  
Sodium Hydroxide Solution ◽  
Carbon Disulphide ◽  
Removal Rate ◽  
Low Cost ◽  
Cellulose Xanthate ◽  
Ion Concentration ◽  
Peanut Shell ◽  
Hydroxide Solution

Peanut shell Cellulose Xanthate (PCX) was prepared by reacting with carbon disulphide after mercerized by sodium hydroxide solution. The preparing conditions (hydroxide solution concentration, carbon disulphide dosage, temperature) were optimized in this study. And the effects of PCX amount and contact time on the removal of Cd (II) ion from aqueous solution was studied,the results indicated that when the initial Cd (II) ion concentration was 10mg/L, the adsorption capacity of PXC was high effective with the PCX amount was 1g/L and the contact time was 1.5h,the equilibrium adsorption capacity of PCX was 9.87 mg/g and the removal rate of Cd (II) ion was 98.72%.Then the regeneration capacities of PCX adsorbent was investigated, the results indicated that the removal rate of Cd (II) ion was more than 75% after regeneration. All the results indicated that the PCX can be used as a low cost but effective biosorbent for heavy metals remediation.

Protein immobilization by aminolysis of cellulose xanthate esters

1991 ◽  
Vol 4 (9) ◽  
pp. 573-578 ◽  
Author(s):  
Eduardo Humeres ◽  
C�lia Ma. Da Silva Oliveira ◽  
Volnei T. Osellame ◽  
Iolanda De Souza
Keyword(s):  
Cellulose Xanthate ◽  
Protein Immobilization

Precipitation of cellulose xanthate from the viscose in salt solutions

1972 ◽  
Vol 4 (1) ◽  
pp. 40-41
Author(s):  
I. P. Baksheev ◽  
G. G. Finger ◽  
E. M. Mogilevskii
Keyword(s):  
Cellulose Xanthate ◽  
Salt Solutions

scholarly journals Alternative Methods for Cellulose Preparation for AMS Measurement

Radiocarbon ◽  
2010 ◽  
Vol 52 (3) ◽  
pp. 1358-1370 ◽  
Author(s):  
Mojmír Němec ◽  
Lukas Wacker ◽  
Irka Hajdas ◽  
Heinz Gäggeler
Keyword(s):  
Textile Industry ◽  
Plant Material ◽  
Cellulose Xanthate ◽  
Soxhlet Extraction ◽  
Alternative Methods ◽  
Wood Cellulose ◽  
Acid Base ◽  
Pure Cellulose ◽  
Original Plant ◽  
Second Procedure

The main methods applied to clean plant material for radiocarbon dating are not compound-specific and generally remove only the easily exchangeable components by an acid-base-acid sequence and additional optional steps like Soxhlet extraction to remove resins and oxidative bleaching with NaClO2. The products are normally clean enough for standard 14C measurement, but in some cases it is desirable to have pure cellulose, which remains unchanged and immobile over longer time ranges, better representing the original plant material. In this work, 2 more compound-specific but still simple methods were tested to separate the cellulose from wood. The viscose method is based on the xanthification process used in the textile industry, where the alkali-cellulose with CS2 forms a soluble cellulose xanthate, which is then extracted and cellulose is recovered. The second procedure is based on the wood/cellulose dissolution in ionic liquid 1-butyl-3-methylimidazolium chloride [BMIM]Cl, when the dissolved cellulose could be precipitated again by simply adding a water-acetone mixture. This process was recently reported, but still not used in sample preparation procedures for 14C dating.

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