vinyl-pyrrolidone 中文意思是什麼
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The dispersity and stability of the graphite aqueous suspensions was investigated with centrifugation, the violet visible spectrophotometer, the laser particle size analyzer and scanning electron microscopy ( sem ). the following aspects of the production technique were carefully studied : 1. the effects of surfactants, poly ( vinyl alcohol ) ( pva ), poly ( vinyl pyrrolidone ) ( pvp ), sodium alginate ( sa - na ) and poly ( sodium acrylate ) ( pa - na ) on the suspension stability of graphite were investigated
本研究的主要內容有以下三個方面: 1 、研究了陰離子表面活性劑、非離子表面活性劑、聚乙烯醇（ pva ） 、聚乙烯基吡咯烷酮（ pvp ） 、海藻酸鈉（ sa - na ） 、聚丙烯酸鈉（ pa - na ）對石墨在水中分散性和穩定性的影響; 2 、研究了分散方法、分散介質、 ph值及羧甲基纖維素鈉（ cmc ）含量對石墨在水中分散性和穩定性的影響; 3 、研究了聚乙烯醇（ pva ） 、聚乙烯基吡咯烷酮（ pvp ） 、海藻酸鈉（ sa - na ） 、聚丙烯酸鈉（ pa - na ）四種助分散劑與羧甲基纖維素鈉（ cmc ）復配對石墨在水中分散性和穩定性的影響。 -
Abstract : the photografting polymerization of n - vinyl pyrrolidone ( nvp ) on the surface of ldpe film with photo grafting method was studied and ldpe - g - nvp was chara cterized by ftir qualitatively
文摘:採用一步法和二步法研究了聚乙烯薄膜表面的n -乙烯基吡咯烷酮光接枝反應，並用傅立葉變換紅外光譜儀定性表徵了反應結果。 -
Abstract : large quantities of spheric silver colloidal particles, which were protected by poly vinyl pyrrolidone ( pvp ), can be converted into flake silver powders using photoinduced method
摘要：將銀溶膠用適當的保護劑保護后，置於一定波長的可見光下進行輻照可以得到納米級片狀銀粉。 -
According to the problems in current research, my works have four parts as following : 1. cds nanoparticles were synthesized by surface - modified with thiourea and stabilized by poly ( n - vinyl - 2 - pyrrolidone ) ( pvp ). the results showed that cds nanoparticles, which exhibited significantly quantum size effect and enhanced luminescence, were prepared through the surface modified with thiourea
鑒于目前使用苯硫酚修飾對cds納米粒子的熒光具有強烈的淬滅作用，而硫醇具有較強的毒性，本研究用硫脲作表面修飾劑，以聚乙烯吡咯烷酮（ pvp ）作穩定劑制備了粒徑分佈較均勻、性能穩定的cds納米粒子。
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