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Rheological properties of cellulose solution in paraformaldehyde/dimethyl sulfoxide system (1)
Author(s) -
He Chunju,
Wang Qingrui
Publication year - 1999
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/(sici)1099-1581(199908)10:8<487::aid-pat891>3.0.co;2-d
Subject(s) - viscose , rheology , materials science , paraformaldehyde , cellulose , pulp (tooth) , dimethyl sulfoxide , activation energy , chemical engineering , viscosity , shear rate , polymer chemistry , branching (polymer chemistry) , composite material , organic chemistry , chemistry , medicine , pathology , engineering
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. Copyright © 1999 John Wiley & Sons, Ltd.