完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Kuo, SW | en_US |
dc.contributor.author | Huang, CF | en_US |
dc.contributor.author | Tung, PH | en_US |
dc.contributor.author | Huang, WJ | en_US |
dc.contributor.author | Huang, JM | en_US |
dc.contributor.author | Chang, FC | en_US |
dc.date.accessioned | 2014-12-08T15:18:12Z | - |
dc.date.available | 2014-12-08T15:18:12Z | - |
dc.date.issued | 2005-10-24 | en_US |
dc.identifier.issn | 0032-3861 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1016/j.polymer.2005.07.044 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/13157 | - |
dc.description.abstract | We have synthesized a series of block copolymers of poly(2,6-dimethyl- 1,4-phenylene oxide) and polystyrene (PPO-b-PS copolymer) by atom transfer radical polymerization. The PS content in these copolymer systems was determined by using infrared spectroscopy, thermal gravimetric analysis, and solution and solid-state NMR spectroscopy; good correlations exist between these characterization methods. DSC analyses indicated that the PPO-b-PS copolymers have higher glass transition temperatures than do their corresponding PPO/PS blends. Our FTIR and solid-state NMR spectroscopic analyses suggest that the PPO-b-PS copolymers possess stronger specific interactions that are responsible for the observed relatively higher values of T-g. We found one single dynamic relaxation from the dynamic mechanical analysis, which implies dynamic homogeneity exists in the PPO-b-PS copolymer; this result is consistent with the one single proton spin-lattice relaxation time observed in the rotating frame [T-1 rho(H)] during solid state NMR spectroscopic analysis. In addition, the 2D FTIR spectroscopy reveals evidence for the stronger interactions between segments of PPO and PS through the formation of pi-cation complexes. (c) 2005 Elsevier Ltd. All rights reserved. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | ATRP | en_US |
dc.subject | block copolymer | en_US |
dc.subject | specific interactions | en_US |
dc.title | Synthesis, thermal properties, and specific interactions of high T-g increase in poly(2,6-dimethyl-1,4-phenylene oxide)-block-polystyrene copolymers | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1016/j.polymer.2005.07.044 | en_US |
dc.identifier.journal | POLYMER | en_US |
dc.citation.volume | 46 | en_US |
dc.citation.issue | 22 | en_US |
dc.citation.spage | 9348 | en_US |
dc.citation.epage | 9361 | en_US |
dc.contributor.department | 應用化學系 | zh_TW |
dc.contributor.department | Department of Applied Chemistry | en_US |
dc.identifier.wosnumber | WOS:000232642300014 | - |
dc.citation.woscount | 26 | - |
顯示於類別: | 期刊論文 |