| 학회 |
한국고분자학회 |
| 학술대회 |
2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 |
30권 2호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Effective Increase of Lamellar Spacing of Polystyrene-block-Poly(2-vinyl pyridine) Copolymer by the Addition of Small Amounts of Cadmium Chloride |
| 초록 |
The lamellar domain spacing (D) and the order-to-disorder transition temperature (TODT) of symmetric polystyrene-block-poly(2-vinyl pyridine) copolymer (PS-P2VP) with various amounts of cadmium chloride (CdCl2) were studied by using rheometry, small angle X-ray scattering and transmission electron microscopy. Even at a small volume fraction of CdCl2 (CdCl2 = 0.011), the TODT of PS-P2VP coordinated with CdCl2 was 100oC higher than that of neat PS-P2VP. Moreover, the D of PS-P2VP increased greatly at very small amounts of CdCl2. This is because of the change in the P2VP chain conformation resulting from the intra-chain coordination between CdCl2 and nitrogen atom in P2VP. On the other hand, for polystyrene-block-poly(4-vinyl pyridine) copolymer (PS-P4VP) with small amounts of CdCl2, where the inter-chain coordination occurred, D did not increase. This suggests that the position of the nitrogen atom in the pyridine ring, thus the type of coordination with CdCl2, plays a very important role in determining the increase of D. |
| 저자 |
이동현1, 류두열2, 김황용1, 김진곤1, 허준3
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| 소속 |
1포항공과대, 2연세대, 3서울대 |
| 키워드 |
Lamellar spacing; Polystyrene-block-Poly(2-vinyl pyridine); Polystyrene-block-Poly(4-vinyl pyridine); Cadmium Chloride
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| E-Mail |
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