In-situ Characterization of Non-aqueous Nano-dispersion Systems by Freeze-etching TEM and Comparative Study with Laser Scattering Method  

作　　者：欧忠文 

机构地区：[1]Department of Architecture and Civil Engineering,Logistics Engineering University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2010年第3期432-436,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by National Natural Science Foundation of China(No.50572121) ;Key Pre-research Foundation of Weapon and Equipment(No. 9140A27010206JB35)

摘　　要：In-situ characterization of non-aqueous nano-dispersion systems（NANDS） by freeze-etching transmission electron microscope（FETEM） was reported.To improve just-for-once successive rate of specimen preparation and get good characterization results,an improving specimen preparation method of freezing etching was developed.Size,distribution and morphology of NANDS were directly visualized.Some information of particle dispersion feature and particle density can also be obtained.Reproductivity of the FETEM characterization is excellent.Comparing with laser scattering method,which is liable to give positive error especially for small size particle anchoring disperser,FETEM characterization can give more accurate measurement of particle size.Moreover,FETEM can give dispersion feature of nanoparticle in non-aqueous medium.In-situ characterization of non-aqueous nano-dispersion systems（NANDS） by freeze-etching transmission electron microscope（FETEM） was reported.To improve just-for-once successive rate of specimen preparation and get good characterization results,an improving specimen preparation method of freezing etching was developed.Size,distribution and morphology of NANDS were directly visualized.Some information of particle dispersion feature and particle density can also be obtained.Reproductivity of the FETEM characterization is excellent.Comparing with laser scattering method,which is liable to give positive error especially for small size particle anchoring disperser,FETEM characterization can give more accurate measurement of particle size.Moreover,FETEM can give dispersion feature of nanoparticle in non-aqueous medium.

关 键 词：non-aqueous nano-dispersion system dispersion state in-situ characterization FREEZE-ETCHING laser scattering method 

分 类 号：TB383.1[一般工业技术—材料科学与工程]