標題: | Micellar morphologies of self-associated diblock copolymers in acetone solution |
作者: | Tung, Pao-Hsiang Kuo, Shiao-Wei Chen, Shih-Chien Lin, Chen-Lung Chang, Feng-Chih 應用化學系 Department of Applied Chemistry |
關鍵字: | block copolymer;self-assembly;micelle |
公開日期: | 21-五月-2007 |
摘要: | We describe the synthesis and solution morphologies of poly(vinyl phenol-b-styrene) (PVPh-b-PS) micelles and the effects that changing the copolymer composition and concentration have on self-assembly structures of PVPh-b-PS in acetone (a good solvent for PVPh). These PVPh-b-PS copolymers aggregated into spherical, rod-like, and vesicular morphologies. The transformations of the PVPh-b-PS block copolymer micelles in acetone depended on a number of parameters, including the relative block lengths, their concentrations, and the degree of self-association through hydrogen bonding of the coronal PVPh chains. We also investigated the morphologies of the micelles formed from acetone solutions of poly (4-tert-butoxystyrene-b-styrene) (PtBOS-b-PS) copolymers having the same degree of polymerization as the precursor of PVPh-b-PS copolymer before hydrolysis reaction. Our results indicate that the micelles formed from PVPh-b-PS copolymers in acetone were more complicated than those prepared from PtBOS-b-PS copolymers in acetone because hydrogen bonding occurs in the micelle corona of the PVPh block. Finally, we also discussed the morphology transition when the self-association hydrogen bonding of PVPh block was destroyed by adding proton acceptor poly(4-vinylpyridine) (P4vp). (c) 2007 Elsevier Ltd. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.polymer.2007.03.071 http://hdl.handle.net/11536/10791 |
ISSN: | 0032-3861 |
DOI: | 10.1016/j.polymer.2007.03.071 |
期刊: | POLYMER |
Volume: | 48 |
Issue: | 11 |
起始頁: | 3192 |
結束頁: | 3200 |
顯示於類別: | 期刊論文 |