Premium
Solubility enhancement for poly(amic acid)s by rapid hydrolysis of the polymer main chain during alkaline development
Author(s) -
Maekawa Yasunari,
Miwa Takao,
Okabe Yoshiaki,
RamesLanglade Géraldine,
Ueno Takumi
Publication year - 2000
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(20000101)21:1<35::aid-marc35>3.0.co;2-u
Subject(s) - dissolution , polymer , solubility , swelling , hydrolysis , alkaline hydrolysis , gel permeation chromatography , chemistry , polymer chemistry , degradation (telecommunications) , chemical engineering , materials science , organic chemistry , composite material , engineering , telecommunications , computer science
In an alkaline developer carboxyl containing polymer films possess a higher critical carboxyl group concentration (CGC 0 ) below which dissolution does not occur, compared with novolac resins; therefore, it is difficult to obtain the polymer film with a lower dissolution rate and less swelling. We describe herein a new approach for reducing CGC 0 of carboxyl containing polymers by introducing an ester group which is labile in the alkaline developer within the time‐scale of development to obtain the polymers with moderate dissolution rates and less swelling. The rapid hydrolysis that leads to polymer degradation is clearly verified by gel permeation chromatography (GPC).