Citation:
MA Zhiyi, ZHANG Weibang, LI Zhuomei. STUDY ON THE CHARACTERIZATION OF DISTRIBUTION OF SUBSTITUENTS ALONG THE CHAINOF CARBOXYMETHYL CELLULOSE[J]. Chinese Journal of Polymer Science,
1989, 7(1): 45-53.
STUDY ON THE CHARACTERIZATION OF DISTRIBUTION OF SUBSTITUENTS ALONG THE CHAINOF CARBOXYMETHYL CELLULOSE
摘要:
Four new paranmeters, and , and have been proposed to describe the average length of the sequence of substituted anhydroglucose units and that of unsubstituted ones respectively along the CMC chain. The methods for determining those parameters have also been presented . Six CMC samples have been characterized in terms of intrinsic viscosity, degree of substitution (DS), index of substitution(SI) and . It has been proved experimentally that, not only can describe the sequence distribution along the CMC chain,but also can be used for calculating SI and estimating the average degree of substitution in the substituted glucose rings.
English
STUDY ON THE CHARACTERIZATION OF DISTRIBUTION OF SUBSTITUENTS ALONG THE CHAINOF CARBOXYMETHYL CELLULOSE
Abstract:
Four new paranmeters, and , and have been proposed to describe the average length of the sequence of substituted anhydroglucose units and that of unsubstituted ones respectively along the CMC chain. The methods for determining those parameters have also been presented . Six CMC samples have been characterized in terms of intrinsic viscosity, degree of substitution (DS), index of substitution(SI) and . It has been proved experimentally that, not only can describe the sequence distribution along the CMC chain,but also can be used for calculating SI and estimating the average degree of substitution in the substituted glucose rings.
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