超支化聚合物的改性及其在纳米银溶胶制备中的应用

纺织学报 ›› 2015, Vol. 36 ›› Issue (09): 55-60.

超支化聚合物的改性及其在纳米银溶胶制备中的应用

收稿日期:2014-08-25 修回日期:2015-07-01 出版日期:2015-09-15 发布日期:2015-09-14

Modification of hyperbranched polymer and its application in preparation of nano-silver sol

Received:2014-08-25 Revised:2015-07-01 Online:2015-09-15 Published:2015-09-14

摘要/Abstract

摘要：

以二乙烯三胺、丙烯酸甲酯为原料，马来酸酐为改性剂，合成改性超支化聚合物，并以此为模板制备纳米银溶胶。考察改性剂用量对纳米银粒径的影响，研究合成温度和时间对改性超支化聚合物紫外最大吸收波长及其吸光度的影响，优化合成条件，采用红外和核磁表征聚合物结构，测定纳米银的粒径与分布，并与丁二酸酐改性超支化聚合物为模板制备纳米银溶胶比较。结果表明：合成工艺优化条件为：马来酸酐/二乙烯三胺的物质量比为1:20，反应温度150℃，反应时间1h。相对丁二酸酐，马来酸酐改性超支化聚合物为模板制备的纳米银粒径小，分布窄。研究表明，采用马来酸酐对超支化聚合物改性，可以更有效减少纳米银团聚。

关键词: 改性超支化聚合物, 马来酸酐, 纳米银, 粒径

Abstract:

A modified hyperbranched polymer was synthesized with diethylenetriamine and methyl acrylate as raw materials, maleic anhydride as modifier, and applied as template for preparing nano-silver sol. The influence of the dosage of modifier on the particle size of nano-silver was investigated, the effects of synthesis temperature and time on the ultraviolet maximum absorption wavelength and its intensity of the modified hyperbranched polymer were studied, and the synthesis conditions were optimized, the structure of the modified polymer was characterized by FT-IR and NMR, the particle size and distribution of nano-silver were measured, and compared with that of nano silver sol prepared with succinic anhydride modified hyperbranched polymer as template. The results showed the optimal conditions of synthesis process were that: n(MAH):n(DETA) was 1:20, the temperature was 150℃, and the time was 1h. Compared with that of the nano-silver prepared with succinic anhydride modified hyperbranched polymers as template, the particle size of nano-silver prepared with maleic anhydride modified hyperbranched polymers was small and its distributed was narrow. The results indicated that maleic anhydride modifing hyperbranched polymers can effectively reduce the aggregation of nano-silver.

Key words: modified hyperbranched polymer, maleic anhydride, nano-silver, partil size

朱鹏飞吴明华李琰琦鲍进跃. 超支化聚合物的改性及其在纳米银溶胶制备中的应用[J]. 纺织学报, 2015, 36(09): 55-60.

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