Syndiotactic polyallyltrimethylsilane-based stereoregular diblock copolymers: Syntheses and self-assembled nanostructures

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题名:	Syndiotactic polyallyltrimethylsilane-based stereoregular diblock copolymers: Syntheses and self-assembled nanostructures
作者:	林世昌;Lee, Jing-Yu;Shiao, Min-Ching;Tzeng, Fu-Yuan;Chang, Chin-Hung;Tsai, Chih-Kuang;Tsai, Jing-Cherng;Lo, Kuan-Hsin;Lin, Shih-Chieh;Ho, Rong-Ming
贡献者:	生醫理工學院生命科學系
关键词:	Applied sciences;bromides;catalysts;composite polymers;Exact sciences and technology;molecular weight;nanomaterials;Organic polymers;organobromine compounds;Physicochemistry of polymers;Polymerization;polymethylmethacrylate;Preparation, kinetics, thermodynamics, mechanism and catalysts;small-angle X-ray scattering;transmission electron microscopy
日期:	2012-03-27
上传时间:	2026-04-23 11:13:54 (UTC+8)
出版者:	American Chemical Society;Washington, DC: American Chemical Society
摘要:	摘要： Structurally well-defined stereoregular diblock copolymers composed of syndiotactic polyallyltrimethylsilane (sPATMS) and poly(methyl methacrylate) (PMMA) were prepared by using an α-bromoester-terminated sPATMS macroinitiator, which was chain extended by MMA using a cuprous halide-based atom transfer radical polymerization (ATRP) system. The α-bromoester-terminated sPATMS macroinitiator was prepared via the esterfication of hydroxyl-capped sPATMS with α-bromoisobutyryl bromide. The hydroxyl-capped sPATMS was generated via a selective chain transfer reaction to triethylaluminum (TEA) during the syndiospecific polymerization of allyltrimethylsilane (ATMS) conducted in the presence of syndiospecific ansa-metallocene catalysts. The proposed synthetic route not only offers the high-yield production of stereoregular sPATMS-b-PMMA but also provides the linking of the stereoregular block (sPATMS) with PMMA through a controlled/living radical polymerization process. Moreover, the proposed method offers effective control over the block chain length, the molecular weight distribution (M w/M n) and the stereoregularity of sPATMS block. Thus, the self-assembly of the resultant diblock copolymers produces well-ordered nanostructures from microphase separation, as evidenced by transmission electron microscopy and small-angle X-ray scattering results. 其他題名： Macromolecules 出版者： Washington, DC: American Chemical Society 出版日期： 2012-03-27 出處： Macromolecules, 2012-03, Vol.45 (6), p.2720-2730 資源來源： American Chemical Society (IReL) 版權： Copyright © 2012 American Chemical Society 版權： 2015 INIST-CNRS 識別號： ISSN: 0024-9297 識別號： ISSN: 1520-5835 識別號： EISSN: 1520-5835 識別號： DOI: 10.1021/ma300034f 識別號： CODEN: MAMOBX
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