๐”– Bobbio Scriptorium
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Cellulose degradation in xanthate process

โœ Scribed by M. R. Padhye; M. M. Deshpande

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
219 KB
Volume
36
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Changes in degree of polymerization (DP) of cellulose during the viscose process were investigated by determining the number aver%e molecular weight (an), weight average molecular weight (ai,), and polydispersity (ai,/Mn) giving molecular weight distribution (MWD). In general, a reduction in DP from the pulp stage to the final filament stage was noticed. Maximum degradation was observed to take place during xanthation and not during aging as sometimes claimed. Among the four methods used for gel permeation chromatography (GPC), Universal calibration HDV method, not involving viscosity measurement, gave the best and most reproducible values.

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