In situ synthesis of copper nanoparticles/polystyrene composite
- 作者：Konghu Tian ; Cailin Liu ; Liucailin_08@yahoo.com.cn ; Haijun Yang ; Xianyan Ren
- 关键词：Copper nanoparticles ; Polystyrene ; Composite ; Emulsion polymerization
- 刊名：Colloids and Surfaces A ; Physicochemical and Engineering Aspects
- 出版年：2012
- 期刊代码：22_09277757
- 类别：ch
- 出版时间：5 March, 2012
- 卷：397
- 期：Complete
- 页码：12-15
- 文件大小：844 K
摘要
A copper nanoparticles (CuNPs) colloid was synthesized by reduction of cupric sulfate with hydrazine hydrate in the presence of cetyltrimethyl ammonium bromide (CTAB) and poly(N-vinylpyrrolidone) (PVP). A uniform copper nanoparticles/polystyrene (CuNPs/PS) composite was further synthesized via in situ emulsion polymerization. The morphologies, structures, as well as thermal stabilities of the CuNPs and the CuNPs/PS composite were characterized by TEM, UV-vis, X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), Thermal gravimetric (TG), and gel permeation chromatography (GPC). The CuNPs are spherical with an average particle size of 10-20 nm. XRD shows that there is no copper oxide in the synthetic CuNPs. The CuNPs/PS composite particles have a narrow size distribution and an average particle size of 10-40 nm. TG indicates that the uniform CuNPs/PS composite has a better thermal stability than virgin polystyrene. GPC shows that the polystyrene of the CuNPs/PS composite has a higher molecular weight and a lower polydispersity index than virgin polystyrene.