胶体晶体中的两种排列方式及堆积模式  

Two Array Manners and Packing Modes in Colloidal Crystals

作　　者：丛海林 曹维孝[1] 

机构地区：[1]北京大学化学与分子工程学院,北京100871

出　　处：《高等学校化学学报》2003年第8期1489-1491,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 2 740 0 2 )资助

摘　　要：A monodispersed latex from styrene(St), methyl methacrylate(MMA) and acrylic acid(AA) was synthesized with the soap free emulsion polymerization, and the formation of colloidal crystal by evaporating the water of the latex was investigated. It has been confirmed that there exist two array manners, i.e., hexagonal and square array, and two packing modes, i.e., hexagonal packing and face-centered cubic packing in the forming process of colloidal crystals. The square array originated from the dislocation of the particle in the hexagonal array, the area of it depends on the temperature in the forming process. At a lower temperature such as at 0 ℃, relatively large areas of square array were observed in the formed colloidal crystal.A monodispersed latex from styrene(St), methyl methacrylate(MMA) and acrylic acid(AA) was synthesized with the soap free emulsion polymerization, and the formation of colloidal crystal by evaporating the water of the latex was investigated. It has been confirmed that there exist two array manners, i.e., hexagonal and square array, and two packing modes, i.e., hexagonal packing and face-centered cubic packing in the forming process of colloidal crystals. The square array originated from the dislocation of the particle in the hexagonal array, the area of it depends on the temperature in the forming process. At a lower temperature such as at 0 ℃, relatively large areas of square array were observed in the formed colloidal crystal.

关 键 词：胶体晶体 排列方式 堆积模式 六方排列 四方排列 六方堆积 面心立方堆积 

分 类 号：O648.1[理学—物理化学] O733[理学—化学]