標題: Miscibility enhancement on the immiscible binary blend of poly(vinyl phenol) and poly(acetoxy styrene) with poly(ethylene oxide)
作者: Kuo, SW
Liu, WP
Chang, FC
應用化學系
Department of Applied Chemistry
關鍵字: hydrogen bonding;FTIR;miscibility;phase separation;structure;ternary blend
公開日期: 14-Nov-2005
摘要: The miscibility and hydrogen-bonding behaviors of ternary polymer blends of poly(ethylene oxide) (PEO)/ poly(vinyl phenol) (PVPh)/poly(acetoxystyrene) (PAS) were investigated by using DSC and Fourier transform infrared spectroscopy (FTIR). The PEO is miscible with both PVPh and PAS based on the observed single T-g over the entire composition range. FTIR was used to Study the hydrogen-bonding interactions between PEO with PAS and PVPh, respectively. Quantitative analyses show that the strength of hydrogen-bonding strength is of the order of the hydroxyl-ether inter-association of PVPh/PEO blend > the hydroxyl-hydroxyl self-association of pure PVPh > the hydroxyl-carbonyl inter-association PVPh/PAS blend at room temperature. Furthermore, the addition of PEO is able to enhance the I miscibility of immiscible PVPh/PAS binary blends at lower (20 wt.-%) or higher (60 and 80 wt.-%) PEO content. However, there exists a closed iminiscibility loop in the phase diagram at 40 wt.-% PEO content due to the "Delta chi" and "Delta K" effects in this hydrogen-bonded ternary polymer system. Therefore, an interesting and unusual sandwich phase diagram has been observed in this ternary polymer blend.
URI: http://dx.doi.org/10.1002/macp.200500334
http://hdl.handle.net/11536/13069
ISSN: 1022-1352
DOI: 10.1002/macp.200500334
期刊: MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume: 206
Issue: 22
起始頁: 2307
結束頁: 2315
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