| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 기능성 고분자 |
| 제목 | The preparation and characterization of PHB-HHx/fumed silica hybrid composite |
| 초록 | Organic-inorganic hybrids are defined as the composite materials prepared from organic polymers and inorganic materials, and they have paid attention to the conventional polymer engineering fields.1 Generally, the properties of hybrid composite can be controlled not only by the added type and content of inorganic particles, but also the dispersion quality of the inorganic particles in the organic polymer matrix.2 Therefore, it is very important to establish these conditions in the case of hybrid preparation. Fumed silica is commercially available inorganic particle and it has been used as a main reinforcement of polymer in industry. In addition, it is reported that hydrophobic fumed silica has better dispersion quality compared to hydrophilic fumed silica.3 In this study, hydrophobic fumed silica and PHB-HHx were used as inorganic materials and organic polymer to prepare hybrid composites. PHB-HHx is a biodegradable polymer that is synthesized by a number of bacteria.4 Therefore, PHB-HHx/fumed silica hybrid composites are expected to biodegradable materials. Furthermore, they will have more improved physical properties than pure PHB-HHx. First, The PHB-HHx and fumed silica were mixed by melt blending. Then, thermal and dynamic properties of the composite were investigated by DSC and DMTA analysis. Additionally, the mechanical property and thermal stability were examined by TGA and Instron. Finally, the dispersion state of silica particles was monitored by SEM. The crystallization rate of composite was lower than that of pure PHB-HHx. The reinforcement effect of silica influenced to the storage modulus and tan δ of the composite. It was observed that thermal stability and mechanical property of the composite were improved compared with PHB-HHx. Additionally; the dispersion state of silica was favorable in the composite used as this experiment. Reference 1. C.L. Chiang, C.C M. Ma, Polym. Degrad. Stab., 83, 207 (2004). 2. R. Sengupta, A. Bandyopadhyay, S. Sabharwal, T.K. Chaki, A.K. Bhowimck, Polymer, 46, 3343 (2005). 3. Y.H. Hu, C.Y. Chen, C.C. Wang, Polym. Degrad. Stab., 84, 545 (2004). 4. Y. Doi, S. Kitamura, H. Abe. Macromolecules, 28, 4822 (1995). |
| 저자 | 임정섭, 임승순 |
| 소속 | 한양대 |
| 키워드 | silica; PHB-HHx; hybrid; composite |
