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Hydrolytic degradation of polymeric insulation materials as measured by infrared absorption spectroscopy
Author(s) -
Pobiner Harvey,
Jawitz Martin W.
Publication year - 1965
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.1965.070090333
Subject(s) - materials science , polyimide , polyester , degradation (telecommunications) , hydrolysis , polymer , infrared spectroscopy , infrared , polyvinyl alcohol , hydrolytic degradation , composite material , fluoride , polymer chemistry , organic chemistry , chemistry , optics , layer (electronics) , inorganic chemistry , telecommunications , physics , computer science
The hydrolytic degradation of certain polymeric insulation materials can be monitored by an infrared band–ratio spectroscopic method. These polymers, used in the precision electronic components of the aerospace industry, were a polyester (Mylar), a polyvinyl fluoride (Tedlar), and a polyimide (H–film). The polymer films were synthetically aged under selected conditions of temperature, moisture, and time. As ingrowth infrared bands appeared, assignments of the functional group bands of the degradation products were made. The band–ratio data gave a quantitative indication of the extent of degradation. The polyimide film showed the greatest resistance to hydrolysis, followed by the polyvinyl fluoride, and lastly, the polyester.