Applied Chemistry for Engineering (공업화학)
- Volume 4 Issue 4
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- Pages.770-775
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- 1993
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- 1225-0112(pISSN)
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- 2288-4505(eISSN)
Chemical Structure Study on Copolyterephthalates Based on Ethylene Glycol and 1, 4-Cyclohexane Dimethanol by High Resolution NMR Analysis
고분해능 NMR 분석법에 의한 에틸렌글리콜과 1, 4-시클로헥산디메탄올의 테레프탈산 공중합체의 화학구조 연구
- Yoo, Hee-Yeoul (Dept. of Chem. Eng., Seoul City Univ.) ;
- Kim, Sang-Wook (Dept. of Chem. Eng., Seoul City Univ.) ;
- Okui, Norimasa (Dept. of Org. and Polym. Mat., Tokyo Inst. of Tech.)
- Received : 1993.06.05
- Accepted : 1993.07.26
- Published : 1993.09.01
Abstract
Chemical structure of poly(ethylene terephthalate-co-1, 4-cyclohexylene dimethylene terephthalate), P(ET-CT) copolyesters was investigated by High Resolution NMR analysis. The copolymer composition and isomeric ratio were determined by methylene resonance peaks which were separated into three peaks corresponding to ET, trans CT and cis CT units, respectively. The copolymer sequence distribution was evaluated from the carbon resonance peaks connected to carbonyl groups in benzene, indicating died distribution. According to statistics model, these copolyesters are almost random copolymers. The copolymer sequence distribution could be simulated and its averaged length was calculated by random copolymer statistics.
에틸렌글리콜과 1, 4-시클로헥산디메탄올의 테레프탈산 공중합체인, poly(ethylene terephthalate-co-1, 4-cyelohexylene dimethylene terephthalate), P(ET-CT)의 화학 구조를 고분해능 NMR 분석을 통하여 조사하였다.
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