对苯二甲酸十八酯(OTO)晶体在过饱和溶液中的成核过程  

Nucleation Process of Dioctadecyl Terephthalate(OTO)Crystals in Supersaturated Solutions

作　　者：林树坤[1] 关铁堂[1] 陈建中[1] 

机构地区：[1]福州大学化学系

出　　处：《人工晶体学报》1998年第3期257-261,共5页Journal of Synthetic Crystals

基　　金：福建省自然科学基金

摘　　要：本文研究了对苯二甲酸十八酯（ＯＴＯ）在甲苯为溶剂的过饱和溶液中的成核过程。测定了以诱导时间表示的成核速率。通过经典成核理论计算了固－液表面张力、成核自由能和临界成核半径。指出ＯＴＯ晶体在甲苯为溶剂的过饱和溶液中的成核速率随着温度和过饱和度的提高而增大。溶剂的性质将改变成核速率的大小。ucleation in supersaturated solutions of dioctadecyl terephthalate(OTO)has been investigated in this paper.The nucleation rates as indicated by induction period are measured.The effects of temperature,supersaturation and solvent on the nucleation rate in nonagitated systems are reported.The interfacial tension,energy of formation and critical radius of nuclei of the crystal are calculated based on classical nucleation theory.The nucleation rates of OTO crystal increase with raise of the temperature and supersaturation.

关 键 词：X射线 均匀成核 成核速率 OTO 晶体 

分 类 号：O743.5[理学—晶体学] O625.523