教師資料查詢 | 類別: 期刊論文 | 教師: 董崇民 Don, Trong-ming (瀏覽個人網頁)

標題:Synthesis of nanosized PAA/titania hybrid compositesExperiment and modeling
學年96
學期2
出版(發表)日期2008/04/01
作品名稱Synthesis of nanosized PAA/titania hybrid compositesExperiment and modeling
作品名稱(其他語言)
著者Chen, Hung-jen; Wang, Leeyih; Chiu, Wen-yen; 董崇民; Don, Trong-ming
單位淡江大學化學工程與材料工程學系
出版者Elsevier
著錄名稱、卷期、頁數Ceramics International 34(3), pp.467-477
摘要A stable colloid of nanosized PAA/titania hybrid has been successfully prepared, in which chelating bond was evidenced by FTIR spectra. Moreover, TGA curves indicated the degree of chelation to be increased with an increase of PAA content. SEM micrographs demonstrated that the size of hybrid aggregates would be smaller at increased ratio of PAA to titania, because the higher amount of PAA would decrease the degree of aggregation and inhibit the titania growth. A new sol–gel kinetic model for partially chelated titanium alkoxide by PAA has been proposed to simulate the experimental results. Based on this sol–gel kinetic model which takes into account the effect of chelation, the concentration of water, TiOR, TiOH, and (TiO)Ti bonds during sol–gel reaction could be calculated. The variation of number of particles at different reaction times could also be shown. Finally, the size of hybrid aggregates at different degrees of chelation could be qualitatively described. The simulated results from this model were in agreement with the observation from SEM micrographs.
關鍵字
語言英文
ISSN0272-8842
期刊性質國外
收錄於
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式,電子版
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