Synthesis and characterization of alpha,omega-Bis(3-hydroxypropyl)-functionalized poly{dimethylsiloxane-co-methyl[3-(2-acetyl-acetoxy)]propylsiloxane}
文献类型： 外文期刊
作者： Zhang, Meng 1 ; Wu, Yuanjuan 2 ; Wu, Haiyan 1 ; Zhang, Qingsi 3 ; Xia, Yongmei 1 ;
作者机构： 1.Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China
2.Shandong Acad Agr Sci, Cent Lab, Jinan 250100, Peoples R China
3.Shandong Polytech Univ, Sch Chem Engn, Jinan 250353, Peoples R China
关键词： hydrosilylation;equilibrium reaction;polysiloxane;ketone-hydrazine reaction;waterborne polyurethane
期刊名称：JOURNAL OF APPLIED POLYMER SCIENCE （ 影响因子：3.125； 五年影响因子：2.754 ）
ISSN： 0021-8995
年卷期： 2012 年 125 卷 1 期
页码：
收录情况： SCI
摘要： With the purpose to develop polysiloxane-modified waterborne polyurethane (WPU) which was expected to have better water resistance than WPU and better mechanical strength and abrasion characteristics than polysiloxane, a novel reactive polysiloxane bearing hydroxypropyl group at both chain ends and carbonyl groups at the side chain was synthesized by five-step reactions. The prepared compounds in each step were characterized; the results showed that each step synthesis was successfully carried out and objective products were achieved. This novel reactive polysiloxane combines the properties of difunctional hydroxyalkyl terminated polysiloxane and crosslinking agent. When it was incorporated with WPU, the latex film properties of reactive polysiloxane-modified WPU were investigated compared with that of pure WPU. The results indicated that siloxane segments could lower the water absorption of WPU, and that the crosslinking reaction between the dihydrazide and carbonyl group could improve the physicalmechanical characteristics of polysiloxane-modified WPU after post-added dihydrazide. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
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