摘要
采用原位法,以二甲基甲酰胺(DMF)为还原剂和溶剂,制备纳米Ag/PMMA复合薄膜。采用XRD、TEM、FT-IR、UV-Vis表征了纳米Ag/PMMA复合薄膜物相,纳米银的颗粒形貌,分析了纳米银与基体PMMA之间的相互作用机理,并对溶胶和薄膜的光学特性进行表征。结果表明,反应生成的为面心立方银单质,并且随着反应时间的增加,纳米银颗粒粒径增大,并且颗粒由球形颗粒逐渐生长为三角板型颗粒;纳米银颗粒在基体PMMA中分布均匀,纳米银颗粒与基体PMMA之间的作用为弱化学作用,这种作用导致纳米银颗粒的均匀、稳定分布;薄膜的光学性能测试表明了,纳米Ag/PMMA复合薄膜由于纳米银颗粒的表面等立体共振在紫外-可见光区有明显的吸收带。
In situ preparation of silver nano-particles in polymethylmethacrylate（PMMA） using N,N-dimethylformamide（DMF） as a medium has been performed successfully.Nano-Ag/PMMA composite film was characterized by X-ray diffraction（XRD）,transmission electron microscopy（TEM）,Fourier transform infrared spectroscopy（FT-IR）,UV-Vis absorption spectrum（UV-Vis）.The results showed that：the sample exhibits a typical face-centered cubic（fcc） silver phase,and with the reaction time increasing,the nano-silver particles sizes increased gradually,by the shaps changed spherical into nanoprisms.In the composition film,there was a certain mutual chemical reaction between the nano-silver particles and the PMMA martix,which lead to the nano-silver particles existenced in PMMA matrix stably and distributedly,and the film obviously had optical absorption in UV-Vis for SPR（surface plasma resonance） of nano-sliver.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第5期799-802,共4页
Journal of Functional Materials
