✦ LIBER ✦

Rheological properties of cellulose solution in paraformaldehyde/dimethyl sulfoxide system (1)

✍ Scribed by Chunju He; Qingrui Wang

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 222 KB
Volume: 10
Category: Article
ISSN: 1042-7147
DOI: 10.1002/(sici)1099-1581(199908)10:8<487::aid-pat891>3.0.co;2-d

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✦ Synopsis

The rheological properties of three cellulose samples are investigated, including the dependence of the non-Newtonian Index, structural viscosity and zero shear viscosity on temperature and the concentration of their paraformaldehyde/dimethyl sulfoxide solutions; the values of viscous flow activation energy of them are higher than that of the viscose solution. With the increase of molecular weight, solution concentration and the decrease of temperature, the rheological properties become worse. The rheological properties of cotton linters Cotton 1 are better than those of wood pulp Wood 2 despite a similar degree of polymerization.

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