| 학회 | 한국고분자학회 |
| 학술대회 | 2002년 봄 (04/12 ~ 04/13, 서울대학교) |
| 권호 | 27권 1호, p.137 |
| 발표분야 | 고분자 구조 및 물성 |
| 제목 | Structural and morphological changes of P(EN-ET) copolyesters during isothermal crystallization |
| 초록 | Poly(ethylene naphthalate) (PEN) is being used as a high-performance polymer having superior strength, heat stability and barrier properties. In spite of these excellent properties, high-melt viscosity of PEN causes problems associated with processing ability. The simplest solution to these problems would be blend or copolymerization of PEN and poly(ethylene terephthalate) (PET). In this study, structural and morphological changes of P(EN-ET) copolymers (Dimethyl terephthalate (DMT) content 2 ~ 10 %) that were isothermally crystallized at various temperatures were investigated using DSC, time-resolved SAXS and TEM. The rate of crystallization, crystallinity and melting temperature decreased with increasing DMT content, because the DMT segments in the molecular chains decrease the regularity of the main chain. Time-resolved SAXS results exhibited that long period of lamella stack increased with increasing the DMT content due to the decrease of the supercooling. |
| 저자 | 이완덕, 임승순 |
| 소속 | 한양대 |
| 키워드 | |
