可压缩性对双嵌段共聚物层状相的影响  

Effect of Compressibility upon the Lamellar Phase of Diblock Copolymers

作　　者：王正佳[1] 李宝会[1] 丁大同[1] 

机构地区：[1]南开大学物理科学学院,天津300071

出　　处：《南开大学学报（自然科学版）》2012年第3期1-8,共8页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(20925414;20990234)

摘　　要：研究了强分离极限下可压缩性对双嵌段共聚物层状相的影响,并与在不可压缩约束下得到的结果进行了比较.对于可压缩系统,单体密度已经不再是均匀分布的.压缩能和自由链的自由端分布引发的自由能与界面能和拉伸能相比很小,后2者依然是自由能中的主导项.The effect of finite compressibility on the lamellar phase of diblock copolymers is studied in the Strong Stretching Limit （SST）. The results are presented by comparing with those of the incompressible system. For the compressible system, the density profile is no more homogeneous in the both A and B domains. The compressing energy in each domain and the free energy results from the distribution of the free end is much smaller than the interracial energy and the stretching energy, and the latter two terms are still the dominant ones.

关 键 词：强分离理论 可压缩性 压缩能 

分 类 号：O469[理学—凝聚态物理]