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 solvent-dispersible nano-silica powder by sol-gel method
學年105
學期1
出版(發表)日期2016/12/01
作品名稱Preparation of solvent-dispersible nano-silica powder by sol-gel method
作品名稱(其他語言)
著者Chao-Ching Chang; Jo-Hui Lin; Liao-Ping Cheng
單位
出版者
著錄名稱、卷期、頁數Journal of Applied Science and Engineering 19 (4), pp.401-408
摘要Solvent dispersible nano-silica powder was prepared by a dual-step sol-gel process: first, SiO_2nanoparticles were synthesized through acid-catalyzed hydrolysis and condensation of tetraethyl orthosilicate in 2-propanol aqueous solution. Then, the particles were surface-modified by means of the capping agent trimethylethoxysilane (TMES). The formed product, termed TSiO_2 nanopowder, was dispersible in many organic solvents, and the dispersibility was found to depend on the amounts of TMES bounded to the SiO_2 nanoparticles. FTIR spectra of TSiO_2 samples confirm Si-O-Si linkage being formed between TMES and SiO_2 through the capping reaction. The sizes of TSiO_2 dispersed in various solvents, as determined by dynamic light scattering (DLS), fell largely over the range 2-20 nm for solvents with solubility parameters of 16-29.6 MPa^(1/2). TEM imaging of the nanoparticles indicated that they were well separated with the largest identifiable size of ~10 nm, agreeing with the results obtained from DLS.
關鍵字Nanoparticles;Dispersible;Sol-gel;Silica
語言英文
ISSN
期刊性質國外
收錄於
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式,紙本
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