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	Effects of surfactants on dispersive performance of ultrafine silver powder
	Wei Li-li ; Xu Sheng-ming ; Xu Gang ; Chen Song-zhe ; Li Lin-yan
	2010-10-12 ; 2010-10-12
关键词	Experimental/ aggregation materials preparation particle size powders scanning electron microscopy silver surfactants X-ray diffraction/ surfactants ultrafine silver powder Ag(NH/sub 3/)/sup 2+/ ascorbic acid poly(vinylpyrrolidone) PVP aggregation scanning electron microscopy SEM X-ray diffractometry XRD particle size dispersive effects Ag/ A8120G Preparation of metals and alloys (compacts, pseudoalloys) A8120E Powder techniques, compaction and sintering A6140G Structure of powders and porous materials/ Ag/el
中文摘要	The preparation of ultrafine silver powder was investigated by reducing Ag(NH/sub 3/)/sup 2+/ with ascorbic acid in the presence of poly(vinylpyrrolidone) (PVP) as protective agent and surfactants as dispersant. The effects of cation, anion, and non-ion surfactants on aggregation-proof and dispersion of silver particles in the preparing silver powder were investigated, and the pattern and phase of reducing products were also characterized by scanning electron microscopy (SEM) and X-ray diffractometry (XRD). The results show that the surfactant species impact apparently on the purity, dispersion degree and particle size of the reducing sample. The non-ion surfactants can improve the dissemination of ultrafine silver particles, but both the dispersive effects of cation and anion surfactants are unapparent. Moreover, the results of reducing experiments with a series of TW surfactants show that the relative molecular mass of TW affects the dissemination, pattern and size of silver particles, and the well-dispersed ultrafine silver powder with narrow size distribution can be prepared in the presence of TW 80 surfactant.
语种	中文
出版者	Central South University of Technology ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79325]
专题	清华大学
推荐引用方式 GB/T 7714	Wei Li-li,Xu Sheng-ming,Xu Gang,et al. Effects of surfactants on dispersive performance of ultrafine silver powder[J],2010, 2010.
APA	Wei Li-li,Xu Sheng-ming,Xu Gang,Chen Song-zhe,&Li Lin-yan.(2010).Effects of surfactants on dispersive performance of ultrafine silver powder..
MLA	Wei Li-li,et al."Effects of surfactants on dispersive performance of ultrafine silver powder".(2010).

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