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Hydroxypropylcellulose—The reaction of alkali cellulose with propylene oxide
Author(s) -
Gipstein Edward,
Wellisch Eric
Publication year - 1973
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.1973.070170915
Subject(s) - viscose , propylene oxide , alkali metal , cellulose , materials science , chemical engineering , oxide , polymer chemistry , derivative (finance) , organic chemistry , chemistry , composite material , ethylene oxide , polymer , copolymer , engineering , economics , financial economics
Several methods for the hydroxypropylation of alkali cellulose have been investigated to obtain a uniformly substituted material soluble in dilute alkali and regenerable in dilute acid. The reaction in which alkali cellulose is reacted with a 60% concentration of liquid propylene oxide based on the cellulose content was found to be reproducible giving a film‐forming derivative of 6% substitution with minimum by‐products in less than 2 hr. During the course of this work, hydroxypropylcellulose solutions and films were prepared and evaluated. A valid comparison of the physical properties with those of hydroxyethylcellulose and viscose solutions and films has been made.