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Synthesis and properties of novel colorless polyimide containing indene and amide groups.

Authors :
Lu, Zhaohui
Li, Dongpeng
Gu, Qian
Qian, Guangtao
Li, Dandan
Chen, Chunhai
Source :
Journal of Polymer Science; Sep2024, Vol. 62 Issue 18, p4136-4147, 12p
Publication Year :
2024

Abstract

Two novel diamines 1‐(4‐aminophenyl)‐1,3,3‐trimethyl‐2,3‐dihydro‐1H‐indene‐5‐amine and 4‐amino‐N‐(4‐(5‐(4‐aminobenzamide)‐1,3,3‐trimethyl‐2,3‐dihydro‐1H‐inden‐1‐yl) phenyl) benzamide containing indene and amide groups were successfully designed and synthesized, and a series of colorless polyimides (CPIs) derived from the two diamines with 1,2,4,5‐cyclohexanetetracarboxylic dianhydride in various ratios were copolymerized. The introduction of aliphatic ring structures was conducive to the improvement of optical properties, while the incorporation of amide groups improved thermal and mechanical properties. These CPI films exhibited excellent optical properties (T400 > 80%), high heat resistance (Tg > 300 °C) and mechanical properties with the synergistic action of the two groups. Furthermore, the effect of the content of amide groups on the intermolecular interaction of CPIs was systematically analyzed. This study provides a fancy method for the development of heat‐resistant colorless materials for optical applications. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
26424150
Volume :
62
Issue :
18
Database :
Complementary Index
Journal :
Journal of Polymer Science
Publication Type :
Academic Journal
Accession number :
180410531
Full Text :
https://doi.org/10.1002/pol.20240323