RAFT polymerization of a novel allene-derived asymmetrical divinyl monomer: A facile strategy to alkene-functionalized hyperbranched vinyl polymers with high degrees of branching
文献类型：期刊论文
| 作者 | Bao, Youmei1,2; Shen, Guorong1,2; Liu, Xiaohui3; Li, Yuesheng1 |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
 |
| 出版日期 | 2013-07-01 |
| 卷号 | 51期号:13页码:2959-2969 |
| 关键词 | Allene Functionalized Hyperbranched Living Radical Polymerization (Lrp) Radical Polymerization Reversible Addition Fragmentation Chain Transfer (Raft) |
| ISSN号 | 0887-624X |
| DOI | 10.1002/pola.26693 |
| 英文摘要 | Hyperbranched vinyl polymers with high degrees of branching (DBs) up to 0.43 functionalized with numerous pendent allene groups have been successfully prepared via reversible addition fragmentation chain transfer polymerization of a state-of-art allene-derived asymmetrical divinyl monomer, allenemethyl methacrylate (AMMA). The gelation did not occur until high monomer conversions (above 90%), as a result of the optimized reactivity difference between the two vinyl groups in AMMA. The branched structure was confirmed by a combination of a triple-detection size exclusion chromatography (light scattering, refractive index, and viscosity detectors) and detailed 1H NMR analyses. A two-step mechanism is proposed for the evolution of branching according to the dependence of molecular weight and DB on monomer conversion. Controlled radical polymerization proceeds until moderate conversions, mainly producing linear polymers. Subsequent initiation and propagation on the polymerizable allene side chains as well as the coupling of macromolecular chains generate numerous branches at moderate-to-high monomer conversions, dramatically increasing the molecular weight of the polymer. AMMA was also explored as a new branching agent to construct poly(methyl methacrylate)-type hyperbranched polymers by its copolymerization with methyl methacrylate. The DB can be effectively tuned by the amount of AMMA, showing a linear increase trend. The pendent allene groups in the side chains of the copolymers were further functionalized by epoxidation and thiol-ene chemistry in satisfactory yields. (c) 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 2959-2969 |
| 语种 | 英语 |
| WOS记录号 | WOS:000319681900023 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/54113]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Yuesheng |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Changchun Branch, Changchun 130022, Peoples R China 3.Tianjin Polytech Univ, Sch Mat Sci & Engn, Key Lab Hollow Fiber Membrane Mat & Proc, Minist Educ, Tianjin 300387, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Youmei,Shen, Guorong,Liu, Xiaohui,et al. RAFT polymerization of a novel allene-derived asymmetrical divinyl monomer: A facile strategy to alkene-functionalized hyperbranched vinyl polymers with high degrees of branching[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2013,51(13):2959-2969. |
| APA | Bao, Youmei,Shen, Guorong,Liu, Xiaohui,&Li, Yuesheng.(2013).RAFT polymerization of a novel allene-derived asymmetrical divinyl monomer: A facile strategy to alkene-functionalized hyperbranched vinyl polymers with high degrees of branching.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,51(13),2959-2969. |
| MLA | Bao, Youmei,et al."RAFT polymerization of a novel allene-derived asymmetrical divinyl monomer: A facile strategy to alkene-functionalized hyperbranched vinyl polymers with high degrees of branching".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 51.13(2013):2959-2969. |
入库方式： OAI收割
来源：化学研究所
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