ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
A series of new aromatic polyamides, polyimides, and polyureas containing 1,3,5-triazine rings in the main chain and two flexible long side chains for each unit, were prepared by the reaction of 2-(N-phenyl-N-octadecylamino)-4-(N-aminophenyl-N-octadecylamino)-6-aminophenyl-1,3,5-triazines with aromatic diacid chlorides, pyromellitic dianhydride, and diisocyanates, respectively. These polymers were soluble in tetrahydrofuran, chloroform, and benzene, but had poor solubility in polar aprotic solvents such as dimethyl sulfoxide and N,N-dimethylformamide. These polymers were stable up to 410°C for polyamides, 430°C for polyimides, and 290°C for polyureas in air. The differntial scanning calorimetric studies of the polymers indicated that the degree of side-chain crystallinity based side chain was 6-10%.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1990.070401125
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