期刊文献+

纳米SiO_2的分散聚合胶囊化研究 被引量:2

Study on the Encapsulation of Silica Nanoparticles via Dispersion Polymerization
下载PDF
导出
摘要 胶囊化的无机颗粒因粘性和织构等有特殊的性质而在光学、药学和电子学等领域有着广泛的用途[1~3].最近,一种在液相系统中通过乳化聚合包覆无机超细颗粒(微米尺度)的方法得到了发展[4].另外,纳米无机颗粒因其特殊的性能而受到了广泛的关注[5~7],但纳米颗粒制备过程中最大的难题是解决颗粒的团聚问题[8],而胶囊化为颗粒的分散提供了可行的思路.尽管合成纳米SiO2在无数应用领域中已获得了重视,但在由聚合制备的无机-有机复合颗粒的研究工作中,涉及到SiO2的比较少.我们在水-乙醇(5/95质量比)介质中,采用PVP为稳定剂,在由Stober方法制备的胶体SiO2颗粒体系中进行了苯乙烯的分散聚合. Ecapsulation of silica nanoicles via dispersion polymerization of styrene is described. Silica nanoicles are synthesized by the Stober process and then modified by MPS. Approximate size of the silica nanoparticles is 30. 8 nm. By NMR spectrum it is shown that some polystyrene chains are then chemically bonded to the silica particles, through the coupling agent MPS.
作者 艾德生
出处 《科学技术与工程》 2004年第9期813-815,共3页 Science Technology and Engineering
基金 国家自然科学基金(50202011)资助
关键词 胶囊化 纳米SIO2 聚苯乙烯 分散聚合 encapsulation silica nanoparticles polystyrene dispersion polymerization
  • 相关文献

参考文献8

  • 1[1]Blumberg D, Van Driesche R G. Encapsulation rates of three encyrtid parasitoids by three mealybug species ( Homoptera: Pseudococcidae) found commonly as pests in commercial greenhouses.Biological Control, 2001; 22 (2): 191-199
  • 2[2]Castellanos J, Ruben C, Kai G. Poly(ethylene glycol) as stabilizer and emulsifying agent: a novel stabilization approach preventing aggregation and inactivation of proteins upon encapsulation in bioerodible polyester microspheres. Journal of Controlled Release, 2003; 88 (1): 135-145
  • 3[3]Sakuma S, Suzuki N, Kikuchi H, Kishida A, Akashi M. Nanoparticles encapsulating peptides. European Journal of Pharma ceutical Science, 1996; 4 (1): 132-135
  • 4[4]Claverie J P, Soula R. Catalytic polymerizations in aqueous medium. Progress in Polymer Science, 2003; 28 (4): 619-662
  • 5[5]Penn S G, He Lin, Natan M J. Nanoparticles for bioanalysis. Current Opinion in Chemical Biology, 2003; 7 (5): 609-615
  • 6[6]Miyoko T, Masaki T, Kazuo F. Behavior of metal nanoparticles in the electron beam. Micron, 2002; 33 (5): 441-446
  • 7[7]Khomutov G B, Gubin S P. Interfacial synthesis of noble metal nanoparticles. Materials Science and Engineering: C, 2002; 22(2): 141-146
  • 8[8]Ai D, Kang S. Preparation of 3Y-ZrO2 nano-powders via a W/O emulsion. Ceramics International, 2004, 30 (4) :619-623

同被引文献23

引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部