教師資料查詢 | 類別: 期刊論文 | 教師: 張朝欽 Chang, Chao-Ching (瀏覽個人網頁)

標題:Preparation of almost dispersant-free colloidal silica with superb dispersiblility in organic solvents and monomers
學年100
學期1
出版(發表)日期2011/09/01
作品名稱Preparation of almost dispersant-free colloidal silica with superb dispersiblility in organic solvents and monomers
作品名稱(其他語言)
著者Huang, Feng-Hsi; Chang, Chao-Ching; Oyang, Tai-Yueh, Chen, Ching-Chung; Cheng, Liao-Ping
單位淡江大學化學工程與材料工程學系
出版者Dordrecht: Springer Netherlands
著錄名稱、卷期、頁數Journal of Nanoparticle Research 13(9), pp.3885-3897
摘要Surface modification of silica nanoparticles synthesized by the sol–gel process was performed using coupling agents, 3-(trimethoxysilyl) propyl methacrylate (MSMA) and/or trimethyethoxylsilane (TMES). The chemical structures of the formed particles were analyzed by means of Fourier Transform Infrared Spectroscopy (FTIR) and solid-state Si-Nuclear Magnetic Resonance (Si-NMR), and the particle sizes were determined by Transmission Electron Microscopy (TEM) imaging. The latter results indicate that such surface modifications can effectively lessen the serious aggregation being common to pure silica nanoparticles. In some cases, separate particles of ca. 5–10 nm dia. could be obtained, when both MSMA and TMES were employed during the modification process. Dynamic light scattering method was adopted to examine the stability of the prepared silica sols during a long-term storage. It was found that the aggregation phenomenon can essentially be eliminated in case that the surface of silica contained sufficient amount of TMES moiety. Vacuum distillation was used to remove the volatile components such as methanol, ethanol, and water from the silica sol. The condensed product, containing 2 wt% residual solvent, appeared as a uniform transparent paste-like material, which can be dispersed in common organic solvents and monomers within a few seconds.
關鍵字Surface modification; Sol–gel; Silica nanoparticle; Colloidal silica
語言英文
ISSN1388-0764; 1572-896X
期刊性質
收錄於SCI;EI;
產學合作
通訊作者Cheng, Liao-Ping
審稿制度
國別荷蘭
公開徵稿
出版型式電子版;紙本;
相關連結
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