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Article
Optical Properties of Polyimide Thin Films. Effect of Chemical Structure and Morphology
The optical properties of polyimide (PI) thin films with various backbone structures were investigated with prism coupler. PI films were prepared from two types of dianhydrides: pyromellitic dianhydride (PMDA)...
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Article
Effects of Diamines (1,4-Phenylene Diamine and 4,4′-Oxydianiline) on Water Sorption Behavior of Polyimide Thin Film
Several polyimide thin films based on two widely commercialized diamines, 1,4-phenylene diamine (PDA) and 4,4′-oxydianiline (ODA), were prepared from respective poly(amic acid) precursors. Water sorption behav...
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Article
Effect of Isomeric Oxydiphenylene Diamine on the Water Sorption Behavior of High Temperature Polyimide Thin Films
The effects of isomeric oxydiphenylene diamines (ODA), 3,4′ODA and 4,4′ODA, on the water sorption behavior in pyromellitic dianhydride (PMDA)-ODA, biphenyltetracarboxylic dianhydride (BPDA)-ODA, 3,3′,4,4′-benz...
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Article
The Effect of Amic Ester Precursor on the Water Sorption Behavior and the Stress Relaxation of High Temperature Polyimide Thin Films
Poly(4,4′-oxydiphenylene pyromellitimide) (PMDA-ODA) and poly(1,4-phenylene pyromellitimide) (PMDA-PDA) polyimides were prepared from poly(amic acid) (PAA) and poly(amic ester) (PAE) precursors, respectively. ...