Synthesis and characterization of ethoxy-terminated ladder-like polymethylsilsesquioxane oligomer
文献类型：期刊论文
| 作者 | Duan, QH; Zhang, Y; Jiang, JQ; Deng, KL; Zhang, TY; Xie, P; Zhang, RB; Fu, PF |
| 刊名 | POLYMER INTERNATIONAL
 |
| 出版日期 | 2004 |
| 卷号 | 53期号:1页码:113-120 |
| 关键词 | Ladder-like Polyorganosilsesquioxane (Lps) Self-assembly Stepwise Coupling Polymerization Room Temperature Vulcanization Silicone Rubber (Rtv-sr) |
| ISSN号 | 0959-8103 |
| DOI | 10.1002/pi.1415 |
| 英文摘要 | A fully ethoxy-terminated ladder-like polymethylsilsesquioxane oligomer (EtO-Me-T) has been synthesized and characterized for the first time using an effective transient catalyst (tetramethylammonium hydroxide, TMAH) via the dehydration alcoholysis reaction of hydroxy-terminated ladder-like polymethylsilsesquioxane (HO-Me-T) prepared by a modified stepwise coupling polymerization approach. Compared with the common acidic or basic catalysts, use of the transient catalyst TMAH can not only make the HO-Me-T molecules fully ethoxy-terminated but also enables the catalyst to be readily and thoroughly removed after completion of the alcoholysis reaction. It is noteworthy that the common acidic or basic catalysts widely used in the dehydration alcoholysis reaction are clearly unsuitable for the preparation of EtO-Me-T oligomer because the latter would be hydrolyzed unavoidably back to the parent HO-Me-T during the washing process. In addition, preliminary exploration indicates that, when compared with the tetraethyl orthosilicate (Si(OEt)(4)) generally used as a crosslinking agent for the room-temperature vulcanization of silicone rubber (RTV-SR), the oligomer EtO-Me-T is a promising replacement which can greatly improve the mechanical properties of RTV-SR (C) 2003 Society of Chemical Industry. |
| 语种 | 英语 |
| WOS记录号 | WOS:000187852300019 |
| 出版者 | JOHN WILEY & SONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/55295]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, RB |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China 2.Dow Corning Corp, New Ventures R&D, Midland, MI 48686 USA |
| 推荐引用方式 GB/T 7714 | Duan, QH,Zhang, Y,Jiang, JQ,et al. Synthesis and characterization of ethoxy-terminated ladder-like polymethylsilsesquioxane oligomer[J]. POLYMER INTERNATIONAL,2004,53(1):113-120. |
| APA | Duan, QH.,Zhang, Y.,Jiang, JQ.,Deng, KL.,Zhang, TY.,...&Fu, PF.(2004).Synthesis and characterization of ethoxy-terminated ladder-like polymethylsilsesquioxane oligomer.POLYMER INTERNATIONAL,53(1),113-120. |
| MLA | Duan, QH,et al."Synthesis and characterization of ethoxy-terminated ladder-like polymethylsilsesquioxane oligomer".POLYMER INTERNATIONAL 53.1(2004):113-120. |
入库方式： OAI收割
来源：化学研究所
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