| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 복합재료 |
| 제목 | The Behavior of Glass Transition Temperature of PMMA / Silica Nanocomposites. |
| 초록 | The behavior of glass transition is the one of the most important properties of polymer but it is not well known to the reason of the glass transition of polymers. Nowadays many research groups study a large number of the glass transition temperature in thin polymer films. The behavior of glass transition temperature of thin polymer films is different from bulk polymer system, namely, with decreasing the thickness of thin polymer films, glass transition temperature is increased or decreased in accordance with polymer systems. We represented the continuous multil-ayer model theory about the behavior of glass transition temperature of thin polymer films through previous studies . In this study, to expand the continuous multi-layer model theory, the glass transition temperatures of PMMA/silica nanocomposites were investigated. Nanocomposites were mixing with carbon tetrachloride and in order to know the size effect of silica, 15nm and 80nm SiO2 nanoparticles sizes were used. Thermal and physical properties of nanocomposites are investigated by using differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and fourier transform-infrared (FT-IR). It was found that glass transition temperature of nanocomposites is increased with increasing SiO2 contents. The increase of glass transition temperaute is dependent on strongly favorable interactions between polymer matrix and nanoparticle and on interphase of nanoparticles. |
| 저자 | 옥창우, 진왕철 |
| 소속 | 포항공대 신소재공학과 |
| 키워드 | glass transition temperature; nanocomposite |
