The Effect of the Substitution Position of Nitrogen Atoms on Copolyimide Properties

Yu Han Li; Ri Zhe Jin

doi:10.4028/www.scientific.net/AMR.1079-1080.66

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1079-1080The Effect of the Substitution Position of...

The Effect of the Substitution Position of Nitrogen Atoms on Copolyimide Properties

Abstract:

Two containing nitrogen diamine monomer, 2-(4-aminophenyl)-5-aminopyrimidine (PAPRM) and 2,5-two(dimethyl amino methylene)-1,4-((paraamino) phenyl)benzene(DMAPB), was synthesized. The corresponding copolyimide containing 40–80 mol % PAPRM and DMAPB were prepared. The copolymers showed excellent solubility and good ﬁlm-forming capability. Most of the SPI membranes were both tough and flexible and thermally stable up to 330 °C.With increasing content of the nitrogen atoms, water uptake of membranes and dimensional changes also remarkable decrease. Compared with the main chains containing nitrogen atoms, the side chains type displayed excellent water stability and good mechanical properties.

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Periodical:

Advanced Materials Research (Volumes 1079-1080)

Pages:

66-69

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1079-1080.66

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Online since:

December 2014

Authors:

Yu Han Li, Ri Zhe Jin*

Keywords:

Polyimide, Pyrimidine, Water Stability

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* - Corresponding Author

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