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)面容易长厚 OAO octadecyl ester (OAO) has low intermolecular binding power and poor crystallinity. Therefore, creating the conditions to improve the crystallinity of OAO is a key task of OAO single crystal growth. In this paper, a constant temperature evaporation method to do a variety of different polarities OAO crystallization experiments, the results show that the smaller the polarity of the solvent OAO crystallization more favorable; this paper also made OAO seed in different supersaturation and Different crystal growth temperature growth experiments, the results showed that increasing the solution supersaturation and growth temperature on OAO crystal growth is favorable, especially difficult to grow (0 0 1) surface easy to grow thick