| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 가을 (10/06 ~ 10/07, 김대중 컨벤션센터) |
| 권호 |
36권 2호 |
| 발표분야 |
고분자가공/복합재료－나노카본 고분자 복합필름 |
| 제목 |
Effect of graphene discs on isothermal crystallization of poly(vinyl alcohol): In-situ FT-IR spectroscopy and DSC |
| 초록 |
The crystallization behavior of poly(vinyl alcohol)/graphene discs (PVA/GDs) nanocomposite was investigated in terms of the heterogeneous nucleation effect of GDs using FTIR and differential scanning calorimeter (DSC). GDs were prepared via transversal cutting of carbon nanofibers. A polymer nanocomposite with uniform dispersity could be readily obtained due to the enhanced compatibility in aqueous solution. The PVA/GDs nanocomposite exhibited an enhanced degree of crystallinity. The degree of crystallinity increased up to 18.8 % at the GDs concentration of 0.5 wt%, compared to the pristine PVA. The GDs acted as an effective nucleating agent during the crystallization process, thereby enhancing the degree and rate of crystallization. In addition, the kinetic study of the crystallization also revealed the decreased value of the Avrami coefficient in the case of the PVA/GDs nanocomposite. |
| 저자 |
이승애, 송희, 장정식
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| 소속 |
서울대 |
| 키워드 |
nanocomposite; poly(vinyl alcohol); graphene; crystallinity; FTIR
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| E-Mail |
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