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通过自洽平均场理论计算,对对称AB两嵌段共聚物在均聚物C中形成的胶束进行了研究.在C对A、B组分没有选择性相互作用的情况下,我们观察到了两嵌段共聚物所形成的胶束形状为各向异性的、由间隔A/B层相区构成的类椭球结构.我们系统考察了胶束的长短径之比与胶束体积、组分间相互作用、均聚物长度之间的关系.结果表明,当固定组分间相互作用时,胶束的长短径之比随体积变大而减小;当体积增大至一临界值,胶束层数增加,长短径之比发生突变并增大.给定胶束的结构和体积,增加两嵌段共聚物的不相容性,胶束长短径之比增加并且最终趋于平缓;当固定相互作用及胶束体积时,均聚物的长度越小,长短径之比越大.
The micelles formed by the symmetric AB diblock copolymer in homopolymer C were studied by the self-consistent mean field theory calculation. In the absence of selective interaction of C with A and B components, we observed The micelles formed by the two block copolymers are anisotropic and have ellipsoid structure consisting of phase A / B layers.We systematically investigated the ratio of the length to the length of the micelles to the micellar volume, The results show that when the interaction between fixed components, the ratio of the length to the diameter of the micelles decreases with the increase of the volume, when the volume increases to a critical value, the glue The number of layers increases, the ratio of the length to the diameter changes and increases. Given the structure and volume of the micelles, increasing the incompatibility of the diblock copolymer, the ratio of the length to the length of the micelles increases and eventually tends to be gentle. Fixed interaction and micellar volume, the smaller the length of the homopolymer, the greater the ratio of the length to the diameter.