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Properties of solutions of poly‐ N ‐vinylcaprolactam
Author(s) -
Solomon O. F.,
Corciovei M.,
Ciută I.,
Boghină C.
Publication year - 1968
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.1968.070120804
Subject(s) - aqueous solution , polymer , precipitation , toluene , polymer solution , materials science , polymer chemistry , chemical engineering , chemistry , organic chemistry , physics , meteorology , engineering
The properties of poly‐ N ‐vinylcaprolactam organic and aqueous solutions were studied. Toluene solutions present an increasing [η] from 10 to 40°C. Aqueous solutions present a very accentuated diminishing of [η] from 10 to 30°C. Above 30°C. The polymer precipitates from its aqueous solutions. The precipitation temperature does not depend on the concentration but on the molecular weight of the polymer. Some acid and basic agents have a marked influence on [η] and the precipitation temperature of the aqueous solutions.