Synthesis and Characterization of Poly(N-Isopropylacrylamide)-Modified Zinc Oxide Nanoparticles
Synthesis and Characterization of Poly(N-Isopropylacrylamide)-Modified Zinc Oxide Nanoparticles
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聚(N-异丙基丙烯酰胺)改性氧化锌纳米粒子的合成与表征
DOI：
10.4028/www.scientific.net/amr.771.141
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Shanxiao Wu
中科院分区：
文献类型：
--
作者：
Ping Zhang;Shanxiao Wu
本文报道了一种表面功能聚合物-聚N-异丙基丙烯酰胺（PNIPAM）接枝到纳米氧化锌（ZnO）表面。结果表明，可逆加成断裂链转移（RAFT）试剂成功地接枝到ZnO表面。采用RAFT法将PNIPAM接枝到ZnO表面，成功地将PNIPAM接枝到ZnO表面。研究了表面改性对ZnO纳米粒子的尺寸、结构、形貌和性能的影响。结合到ZnO核心的PNIPAM单层的厚度略大于相应的游离PNIPAM在水溶液中的无规卷曲的尺寸，这表明结合到ZnO核心的PNIPAM链的构象被延伸。
This paper reports a surface functional polymer- poly(N-isopropylacrylamide) (PNIPAM) was grafted on the surface of zinc oxide (ZnO) nanoparticles. It has been demonstrated that Reversible addition fragmentation chain-transfer (RAFT) agent was successfully grafted onto the surface of ZnO. PNIPAM chains were successfully grafted from the surface of ZnO via RAFT process by using RAFT agent immobilized on ZnO. The effect of surface modification on the size, structure, morphology, and properties of ZnO nanoparticles was investigated. The thickness of a PNIPAM monolayer bound to the ZnO core is somewhat larger than the size of the random coil of the corresponding free PNIPAM in aqueous solution, which suggests that the conformation of a PNIPAM chain bound to the ZnO core is extended.