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利用自洽场方法研究两嵌段共聚物受限于接枝均聚物链(聚合物刷)圆孔中的自组装相形貌.研究表明,当圆孔内径一定时,嵌段比f和聚合物刷C的体积分数■是调控嵌段共聚物相形貌的主要因素,聚合物刷的弹性熵也起着重要作用.当f=0.7时,在聚合物刷的浸润下,贴近刷表面处AB嵌段共聚物构成环层状结构,随着■的减小这种结构会周而复始地出现.当f处于0.3—0.7之间的非对称状态时,体系易形成外环内柱的相结构.当f=0.35时,体系可以出现一种新颖的复杂结构——最内层为柱状结构,次内层为环层状结构,次外层呈环形排列的柱状结构,最外层又是环层状结构,即环柱交替结构.给出了以f和嵌段共聚物体积分数■作为参数空间的嵌段共聚物结构相图.
Self-consistent field method was used to study the self-assembled phase morphology of diblock copolymers limited to the circular pores of grafted homopolymer chains (polymer brushes). The results show that when the diameter of circular hole is constant, The volume fraction of polymer brush C is the main factor regulating the morphology of the block copolymer, and the elastic entropy of the polymer brush also plays an important role.When f = 0.7, close to the brush surface AB block copolymer at the ring layer structure, with the reduction of this structure will occur again and again when f is in the asymmetrical state between 0.3-0.7, the system is easy to form the inner ring phase structure of the outer ring When f = 0.35, the system can appear a novel and complex structure - the innermost columnar structure, the inner inner layer is ring-shaped structure, the outer layer is a ring-shaped columnar structure, the outermost layer is ring The layered structure, ie, the ring-column alternating structure, gives the block copolymer phase diagram with f and the volume fraction of the block copolymer as the parameter space.