研究了以八甲基环四硅氧烷(D4)和四甲基四氢环四硅氧烷(D4-H)为原料、以六甲基二硅氧烷(MM)为大分子链封端剂合成高分子量含氢聚硅氧烷的新方法.讨论了物料配比与产物分子量及组成的关系,比较了不同催化体系对产物分子量、分子量分布以及合成操作的影响.结果发现,用70%(a.q.)硫酸溶液作催化剂能获得分布窄和分子量高(-Mn=60,000)的含氢聚硅氧烷,且操作简便,易得到含Si-H链节比β＜20%的产物.
参考文献
| [1] | Yilgor K;McGrath J E .[J].Advances in Polymer Science,1988,86:1. |
| [2] | Chen X.;Ho T.;Wynne KJ.;Gardella JA. .SURFACE COMPOSITION OF A SERIES OF DIMETHYLSILOXANE UREA URETHANE SEGMENTED COPOLYMERS STUDIED BY ELECTRON SPECTROSCOPY FOR CHEMICAL ANALYSIS[J].Macromolecules,1995(5):1635-1642. |
| [3] | Benrashid R;Nelson G L .[J].Journal of Polymer Science Part A:Polymer Chemistry,1994,32:1847. |
| [4] | Okkema A Z;Fabrizius D J;Grasel T G et al.[J].Journal of Biomaterials,1989,10:23. |
| [5] | Wang HY.;Saitoh H.;Fujii N.;Kobayashi T. .POROUS POLYDIMETHYLSILOXANE MEMBRANES FOR ENZYME IMMOBILIZATION[J].Journal of Applied Polymer Science,1996(13):2339-2346. |
| [6] | Webster D C;Andolino P J;Riffle et al.[J].Polymeric Preprints(American Chemical Society Division of Polymer Chemistry),1983,24:161. |
| [7] | Patel N M;Dwight D W;Hedrick J L et al.[J].MACROMOLECULES,1988,21:2689. |
| [8] | Yu X H;Nayarajian M R;Grasel T G et al.[J].Journal of Polymer Science Part B:Polymer Physics,1985,23:2319. |
| [9] | 余海斌,张邦华,宋谋道.聚二甲基硅氧烷/聚氨酯共混体系的增容作用[J].高分子材料科学与工程,1996(01):54-58. |
| [10] | Lewis L N .[J].Journal of the American Chemical Society,1990,112:5998. |
| [11] | Friedmann G;Shreim Y;Brossas J .[J].European Polymer Journal,1992,28:271. |
| [12] | Olabisi O.Polymer-Polymer Miscibility[M].Academic Press Inc.,New York,1979 |
| [13] | 李志英.有机硅化合物工业分析[M].北京:化学工业出版社,1979 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%