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Cover Image, Volume 136, Issue 45
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48426
Subject(s) - polyimide , cover (algebra) , imide , composite number , amide , polymer , polymer science , materials science , polymer chemistry , amorphous solid , composite material , art history , art , chemistry , crystallography , layer (electronics) , engineering , organic chemistry , mechanical engineering
The current image by Svetlana Viktorovna Kononova, Denis Sapegin, and colleagues represents phase heterogeneity between sulfonated polyimide and poly(amide‐imide) polymer phases in the composite film with 7:3 polyimide to poly(amide‐imide) weight ratio. Most likely, in this composite, a three‐dimensional crystallizing network of polyimide is formed around poly(amide‐imide) which is to form an amorphous phase. This assumption was confirmed by the data of the energy‐dispersive analysis since it is in the region of the network structure sulfur atoms were detected, which are present in this composite only in the structure of sulfonated polyimide. DOI: 10.1002/app.48197