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Study on a novel polyimide precursor prepared by a modified polymerization of monomeric reactants (MPMR) procedure
Author(s) -
Chu Qinghui,
Zhang Jin,
Xu Zhengyan,
Ding Mengxian
Publication year - 2000
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(20000301)201:5<505::aid-macp505>3.0.co;2-i
Subject(s) - monomer , norbornene , chemistry , polymer chemistry , polymerization , polyimide , imide , fourier transform infrared spectroscopy , high performance liquid chromatography , methylene , organic chemistry , polymer , chemical engineering , layer (electronics) , engineering
A novel polyimide precursor based on the dimethyl ester of 3,3′,4,4′‐biphenyltetracarboxylic acid, 4,4′‐methylene dianiline and the monomethyl ester of 5‐norbornene‐2,3‐dicarboxylic acid (BPDE/MDA/NE) was prepared by a modified polymerization of monomeric reactants (PMR) approach (MPMR). The composition of the precursor was quantitatively characterized by means of FTIR, HPLC and GC. The fractions of imide, amic ester and amic acid units in the precursor, typically prepared by refluxing in 1,4‐dioxane for 2 h, were 33.7, 30.8 and 1.1 mol‐%, respectively. The portion of free MDA was 3.34 wt.‐% as determined by HPLC.