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The effect of alkali salt on solvent–polyacrylonitrile interaction
Author(s) -
Padhye M. R.,
Karandikar A. V.
Publication year - 1985
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1985.070300216
Subject(s) - polyacrylonitrile , solvent , lithium bromide , salt (chemistry) , lithium (medication) , alkali metal , inorganic chemistry , bromide , polymer chemistry , chemistry , solvent effects , aqueous solution , materials science , chemical engineering , organic chemistry , polymer , medicine , physics , heat exchanger , thermodynamics , endocrinology , engineering
In solvent spinning of polyacrylonitrile from DMF or DMSO, it is observed that complete removal of solvent is rather difficult. It is shown that addition of Lithium salt, e.g., lithium bromide to the solution before casting a film helps in removing the solvent easily. The probable mechanism of the action of lithium salt in solvent removal is investigated, and it has been shown that the formation of coordinate linkage with the ion stops solvent bonding.