| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Effects of silica nanoparticle on isothermal crystallization behavior of poly(ethylene terephthalate) |
| 초록 |
Crystallization behavior and rheological properties of silica nanoparticle-filled poly(ethylene terephthalate) (PET) prepared by melt mixing were investigated. The incorporation of silica nanoparticle decreased the equilibrium melting temperature by ca. 5.5 ℃. The nanocomposites gave greater Avrami exponent (2.7-2.9) than that of PET (2.3). The silica nanoparticle increased storage modulus of PET even at low loading level (0.5-2 wt%). Value of tanδ of PET nanocomposite with 2 wt% silica was lower than the other nanocomposites at the frequency less than 100 rad/s and the effects of the nanoparticle appeared negligible at the frequencies higher than 100 rad/s. On the Cole-Cole plot PET showed a single master curve regardless of the presence of silica nanoparticle. At particularly low frequency, the relaxation times of PET/silica nanocomposites were longer than that of pure PET. |
| 저자 |
서재식, 김병철
|
| 소속 |
한양대 |
| 키워드 |
Poly(ethylene terephthalate); silica; nanocomposites; melt compounding; isothermal crystallization; rheology
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| E-Mail |
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