| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.543 |
| 발표분야 | 복합재료 |
| 제목 | Preparation and rheological characterization of Polystyrene/Clay nanocomposite by emulsion polymerization |
| 초록 | Polymer/clay nanocomposites are widely used in various applications such as transportation, construction and consumer products, because they show substantial enhancements of thermal, mechanical, and flammability properties compared to the pristine polymers. Polystyrene (PS) is one of the most popular and widely-used polymers. Severial methods of PS-clay hybrid nanocomposite were invested by many researchers. One of useful method is in situ thermal polymerization. In this study, PS/organophilic montmorillonite (OMMT) nanocomposites were prepared via emulsion polymerization. It has been already reported that the molecular weight of PS via emulsion polymerization is higher than via other process. Organic styrene monomer was first intercalated into the interlayer regions of organophilic clay hosts, followed by a typical emulsion polymerization with surfactant and initiator. For enhancement of clay dispersion, ultrasonic process is appplied in the emulsion states. To study the effect of clay loading, we prepared PS/OMMT nanocomposites with various clay contents and examined material properties with increasing clay content. The enhanced thermal properties of nanocomposites were measured by differential scanning calorimetry (DSC) and by thermogravimetric analysis(TGA). The internal nanostructures analysed via X-ray diffraction (WAXD) and Transmission electron microscopy (TEM). Moreover, the composite material was measured with Fourier transform Infrared Spectroscopy (FT-IR) and energy dispersive spectroscopy (EDS). The rheological properties of the PS/OMMT nanocomposites were also measured via a rotational rheometer with a parallel plate geometry, after melt palletizing process. Reference 1. P. Meneghetti and S. Qutubuddin, Langmuir, 20, 3424 (2004). 2. T. H. Kim, S. T. Lim, C. H. Lee, H. J. Choi and M. S. Jhon, J. Appl. Polym. Sci., 87, 2106 (2003). 3. J. M. Hwu, T. H. Ko, W.-T. Yang, J. C. Lin, G. J. Jiang, W. Xie and W. P. Pan, J. Appl. Polym. Sci. 91, 101 (2004). |
| 저자 | 박봉준, 최준순, 최형진 |
| 소속 | 인하대 |
| 키워드 | polystyrene; nanocomposite; clay |
