標題: | Characterization of poly(vinyl pyrrolidone-co-isobutylstyryl polyhedral oligomeric silsesquioxane) nanocomposites |
作者: | Xu, HY Kuo, SW Huang, CF Chang, FC 應用化學系 Department of Applied Chemistry |
關鍵字: | glass transition;hybrid materials;nanocomposites;poly(vinylpyrrolidone);polysiloxanes |
公開日期: | 15-二月-2004 |
摘要: | Poly(vinyl pyrrolidone-co-isobutyl styryl polyhedral oligomeric silsesquioxane)s (PVP-POSS) were synthesized by one-step polymerization and characterized 13 using FTIR, high-resolution H-1-NMR, solid-state C-13-NMR, Si-29-NMR, GPC, and DSC. The POSS content can be controlled by varying the POSS feed ratio. The T-g of the PVP-FOSS hybrid is influenced by three main factors: (1) a diluent role of the POSS in reducing the self-association of the PVP; (2) a strong interaction between the POSS siloxane and the PVP carbonyl, and (3) physical aggregation of nanosized POSS. At a relatively low FOSS content, the role as diluent dominates, resulting in a decrease in T-g. At a relatively high POSS content, the last two factors dominate and result in T-g increase of the PVP-POSS hybrid. (C) 2003 Wiley Periodicals, Inc. |
URI: | http://dx.doi.org/10.1002/app.13346 http://hdl.handle.net/11536/27026 |
ISSN: | 0021-8995 |
DOI: | 10.1002/app.13346 |
期刊: | JOURNAL OF APPLIED POLYMER SCIENCE |
Volume: | 91 |
Issue: | 4 |
起始頁: | 2208 |
結束頁: | 2215 |
顯示於類別: | 期刊論文 |