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Synthesis of aliphatic–aromatic polyimides by two‐step polymerization of aliphatic dianhydride and aromatic diamine
Author(s) -
Jeon JongYoung,
Tak TaeMoon
Publication year - 1996
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/(sici)1097-4628(19960613)60:11<1921::aid-app16>3.0.co;2-3
Subject(s) - dimethylacetamide , diamine , polymer chemistry , condensation polymer , dimethylformamide , monomer , solvent , chemistry , polyimide , polymerization , organic chemistry , polymer , layer (electronics)
Aliphatic‐aromatic polyimides were synthesized by polycondensation reaction in solvent. The effects of variables such as the kind of solvent, reaction time and temperature, and monomer concentration were investigated in detail on the reaction of 1,2,3,4‐butanetetra‐carboxylic dianhydride and 4,4′‐diaminodiphenylmethane. The viscos‐ities of polyimides were between 0.22 and 0.46 dL/g. The polyimides were soluble in some aprotic polar solvents, such as N,N′ ‐dimethylacetamide (DMAc), N ‐methyl‐2‐pyrrolidone (NMP), dimethylsulfoxide (DMSO), and N,N′ ‐dimethylformamide (DMF). They began to decompose at 380–410°C in air, and 10% weight loss temperatures were 430–450°C. © 1996 John Wiley & Sons, Inc.