已二酸十八酯(OAO)晶体结晶习性研究  

Study on Crystal Habit of Adipates Dioctadecyl (OAO)

作　　者：陈义平[1] 关铁堂[1] 郭一帆 

机构地区：[1]福州大学化学系,福州350002

出　　处：《人工晶体学报》2001年第4期375-378,共4页Journal of Synthetic Crystals

基　　金：福州大学化学系基金资助项目

摘　　要：已二酸十八酯 (OAO)分子间结合力小 ,结晶性差 ,所以创造条件改善OAO的结晶性是OAO单晶生长的一项关键工作。本文以恒温蒸发法做了OAO在各种极性不同溶剂中的结晶性实验 ,结果表明溶剂的极性愈小对OAO的结晶愈有利 ;本文还做了OAO籽晶在不同的过饱和度和不同的晶体生长温度中的生长实验 ,结果发现 ,增大溶液过饱和度和生长温度对OAO结晶生长是有利的 ,特别使难生长的 (0 0 1)It is important for growth of adipates dioctadecyl (OAO) single crystal to improve OAO crystal habit because of weak combining between OAO moleculars and bad crystal habit.In this paper,the crystalline experiment of OAO in different solvent was done by the method of evaporation off solvent at constant temperature,which show that the smaller solvent polarity,the better OAO crystal habit.The experiments of OAO seed growing were also done in the conditions of different supersaturation ratio and different temperature,which indicate that increasing supersaturation degree of solution and temperature is advantageous to OAO crystalline growth,especially,making face (001) thick which is difficult to grow.

关 键 词：已二酸十八酯 OAO 分光晶体 结晶习性 X射线分光晶体 晶体生长 

分 类 号：O781[理学—晶体学] O623.624