强激光与粒子束2012，Vol.24Issue(2)：349-352,4.DOI:10.3788/HPLPB20122402.0349
微乳液聚合制备纳米银/聚苯乙烯复合材料
Preparation of nano-silver/polystyrene composite via microemulsion polymerization
摘要
Abstract
High-stable and monodisperse colloidal nano-silver particles were synthesized by reduction of [Ag(NH3)2]+ with hydrazine hydrate using sodium citrate as stabilizer and polyvinylpyrrolidone(PVP) as dispersant. Furthermore, nano-silver/poly-styrene composite was prepared via microemulsion polymerization. The optical properties of the nano-silver particles were studied by ultraviolet-visible (UV-Vis) absorption spectra, and the crystal structure and microscopic morphology were characterized via X-ray diffraction(XRD) and transmission electron microscopy(TEM), respectively. Results show that, the nano-silver particles belong to cubic crystal system and have an average diameter of 10 nm without aggregation and oxidation, and their crystal struc-ture and microscopic morphology do not change obviously during the process of polymerization. Gel permeation chromatography (GPC) data shows that the weight-average molecular weight of polystyrene matrix is over 4. 03 × 108, and the molecular weight distribution index is 1. 21. Thermal gravity-differential scanning calorimetry(TG-DSC) test demonstrates that the nano-silver/pol-ystyrene composite has excellent thermal stability.关键词
微乳液聚合/纳米银/聚苯乙烯/复合材料Key words
microemulsion polymerization/nano-silver/ polystyrene/composite分类
通用工业技术引用本文复制引用
刘才林,李俊江,任先艳,杨海君,李福阳,雍辉..微乳液聚合制备纳米银/聚苯乙烯复合材料[J].强激光与粒子束,2012,24(2):349-352,4.基金项目
西南科技大学引进人才项目(06ZX7105) （06ZX7105）
