GLASS TRANSITION OF QIANA
1970; Volume: 26; Issue: 2 Linguagem: Inglês
10.2115/fiber.26.89
ISSN1884-2259
AutoresTatsuko Hatakeyama, Hisaaki Kanetsuna,
Tópico(s)biodegradable polymer synthesis and properties
ResumoBy means of differential scanning calorimeter (DSC), thermal behavior of QIANA was investigated. The glass transition temperature (Tg) of the original QIANA was found over the range from 90°C to 150°C. Tg of the quenched sample was similar to that of the original, but the transition peak of Tg was appeared. Three melting peaks were recognized at 262°C, 272°C and 281°C. The heat of fusion was 1.2cal/g which was the least in the copolyamides.The higher Tg of QIANA is attributed to the rigid cyclohexyl rings and the broadness of the transiton may be due to the molecular motion of methylene group and cyclohexyl ring which begin at different temperatures.
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