| 聚二甲基—二苯基硅氧烷与聚二甲基—甲基乙烯基硅氧烷嵌段共聚物的合成与表征 |
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| 引用本文： | 刘宗林,贝逸翎,赵勇,黄渝鸿,吴菊英.聚二甲基—二苯基硅氧烷与聚二甲基—甲基乙烯基硅氧烷嵌段共聚物的合成与表征[J].山东大学学报(理学版),1996(4). |
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| 作者姓名： | 刘宗林 贝逸翎 赵勇 黄渝鸿 吴菊英 |
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| 作者单位： | 山东大学化学系(刘宗林，贝逸翎，赵勇)，中国工程物理研究院(黄渝鸿，吴菊英) |
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| 基金项目： | 中国工程物理研究院资助项目 |
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| 摘 要： | 采用氢氧化锂作引发剂,N,N-二甲基甲酰胺(DMF)作促进剂,八甲基环四硅氧烷(D_4)》、八苯基环四硅氧烷(P_4)及四甲基—四乙烯基环四硅氧烷(V_4)作单体,合成了聚二甲基—二苯基硅氧烷(A)与聚二甲基—甲基乙烯基硅氧烷(B)形成的AB嵌段共聚物,研究了氢氧化锂的用量及反应时间对反应的影响,并且用HNMR、IR、UV谱及特性粘数对嵌段聚合物进行了表征。同时采取逐步沉降分级的方法,给出了分子量分布。
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| 关 键 词： | 嵌段共聚硅氧烷 有机环四硅氧烷 氢氧化锂 N N-二甲基甲酰胺 共聚合 |
SYNTHESIS AND CHARACTERIZATION OFBLOCK-COPOLYMER (AB)OF POLYDIMETHYL-DIPHENYLSILOXANE (A) WITH POLYDIMETHYL-METHYLVINYLSILOXANE(B) |
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| Liu Zonglin,Bei Yiling,Zhao Yong.SYNTHESIS AND CHARACTERIZATION OFBLOCK-COPOLYMER (AB)OF POLYDIMETHYL-DIPHENYLSILOXANE (A) WITH POLYDIMETHYL-METHYLVINYLSILOXANE(B)[J].Journal of Shandong University,1996(4). |
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| Authors: | Liu Zonglin Bei Yiling Zhao Yong |
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| Abstract: | The preparation of the block-copolymer(AB)of polydimethyl-diphenylsiloxane(A) with polydimethyl-methylvinylsiloxane (B) was prepared by polymerization of anionic initiation using lithium hydroxide as a initiator,N,N-dimethylformamide(DMF) as a promotor, and octamethylcyclotetrasiloxane (D4), octaphenylcyclotetrasiloxane(P4) and tetramethyl-tetravinylcyclotetrasiloxane(V4) as monomers. The effect of amount of initiator used and reaction time on the molecular weights was studied, and at the same time , the AB block-copolymer obtained was characterized with HNMR.IR, and UV spectra and the intrinsic viscosity. Progressive precipitation separation was used to study the molecular weight distribution. |
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| Keywords: | block copolysiloxane lithium hydroxide organocyclotetrasiloxane N N-dimethylformamide copolymerization |
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