화학공학소재연구정보센터
Polymer Bulletin, Vol.43, No.4-5, 311-318, 1999
Synthesis and the properties of novel cycloaliphatic-aromatic polyamides having pendent N,N '-diphenyl imido groups
We have investigated a novel monomer having two pendent phenyl imido groups for preparing new cycloaliphatic-aromatic polyamides. Novel polyamides were synthesized by direct polycondensation reaction of N,N'-diphenyl-2,3,5,6-diimido cyclohexane-1,4-dicarboxylic acid(PICA) and various aromatic diamines such as p-phenylene diamine, 4,4'-oxydianiline and 4,4'-methylene dianiline. A direct polycondensation was carried out by a Yamazaki method which is typical of using triphenyl phosphite, lithium chloride, and pyridine. Inherent viscosity of these resulting polyamides are ranged 0.20 similar to 0.45 dl/g. A transparent flexible and tough film was casted. The glass transition temperature of the polyamide from the PICA and 4,4'-oxydianiline is 147 degrees C. The decomposition temperature of these polyamides are ranged from 350 similar to 360 degrees C and the ash contents of them orders MDA > p-PDA > ODA according to kinds of the using diamines. And the solubilities of these polyamides are good in aprotic solvents such as DMAc, NMP, DMF.