ISSN:
1435-1536
Keywords:
Carboxymethylcellulose
;
cellulosederivatives
;
iodinesorption
;
accessibility
;
porosity
;
wettability
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Cellulosic fabric was carboxymethylated by single-bath method for different durations. $$\overline {DS} $$ arrived at a maximum when plotted against the time of reaction. This might be interpreted by the dissolution of the highly substituted fractions. The fibrous character of the carboxymethylated samples $$(\overline {DS} = 0.045 - 0.075)$$ remained unchanged, but the accessibility of the cellulose characterized by iodine sorption, porosity, and wettability changed significantly. The carboxymethylation had a complex effect on the investigated parameters: the values of accessibility were increasing initially, caused by opening the fibrillar structure, but decreasing later as the swollen structure was collapsing during air-drying. The studied properties were depending not only on the changes in $$\overline {DS} $$ but also on the reaction parameters.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01413629
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