微波辐射快速制备聚合物基纳米银复合材料  

Rapid preparation of polymer-nanoparticle composites of silver by microwave radiation

作　　者：张宏艳[1] 王艳丽[1] 于秀华[1] 

机构地区：[1]安徽理工大学材料科学与工程学院,淮南232001

出　　处：《辐射研究与辐射工艺学报》2015年第3期42-46,共5页Journal of Radiation Research and Radiation Processing

基　　金：国家自然科学基金资助项目(51002002)资助

摘　　要：采用原子转移自由基聚合法制备mPEG-b-PDMAEMA全亲水性嵌段共聚物,以此共聚物为基体,水为介质,硝酸银为前躯体,微波辐射快速制备聚合物基纳米银复合材料。红外光谱和核磁共振表征结果表明原子转移自由基聚合法制备出目标共聚物;紫外光谱和X-射线衍射光谱则表明,在微波辐射作用下,银离子被还原成面心立方结构的纳米银;透射电镜结果表明纳米银附着在共聚物的表面,复合粒子呈球形。论文还探讨了含叔胺基的甲基丙烯酸二甲胺基乙酯(PDMAEMA)如何在微波辐射的作用下将银离子还原为纳米银的机理。Double hydrophilicblock copolymers mPEG-b-PDMAEMA were synthesized by Atom Transfer Radical Polymerization. With copolymer as substrate, water as medium, the silver nitrate as precursor, the composite particles of nano silver/ mPEG-b-PDMAEMA were prepared by microwave radiation. FTIR and 1HNMR results showed that the target copolymer was prepared by Atom Transfer Radical Polymerization. X-rays and UV-vis results showed that silver nanoparticles had good face-centered cubic crystal structures. TEM pictures showed that nano silver attached on the surface of copolymer and the composite materials were spherical particles. The mechanism of silver ion reduced to nanosilver particles catalyzed by PDMAEMA tmder microwave was discussed.

关 键 词：纳米银 甲基丙烯酸二甲胺基乙酯 微波辐射 原子转移自由基聚合 

分 类 号：O614.122[理学—无机化学] TL13[理学—化学]