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Binary-component micelle and vesicle: Free energy and asymmetric distributions of amphiphiles between vesicle monolayers

机译:二元组分胶束和囊泡:囊泡单层之间的两性自由能和不对称分布

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摘要

The real-space two-dimensional self-consistent field theory (SCFT) is employed to study the free energies of micelles and vesicles constituted by binary amphiphilic diblock copolymer AB in homopolymer A.With an increasing volume fraction of copolymer AB,there are morphological transitions from circle micelles to oblate circle-like micelles,to a compound structure with inverted micelles in the inner center and micelles outer layer,and to vesicles.Special attention is paid to the role of the copolymer AB in controlling the free energies of the micelles and vesicles by examining the effect of the length ratio of A/B with the fixed whole chain length of the AB copolymer,the length effect of A or B block with the corresponding fixed length of B or A block,for one component of copolymer,and the effect of different amphiphile compositions for a binary-component copolymer system.The quantity η is provided to describe the asymmetric density distribution of amphiphiles between the inner and outer monolayers of vesicles,and to quantify the relative asymmetric extent of the density distribution between two species of copolymers in binary component vesicles.
机译:利用实空间二维自洽场理论(SCFT)研究均聚物A中二元两亲性二嵌段共聚物AB构成的胶束和囊泡的自由能。随着共聚物AB体积分数的增加,存在形态学转变。从圆形胶束到扁圆形的胶束,到内部中心和胶束外层具有倒胶束的复合结构,再到囊泡。应特别注意共聚物AB在控制胶束自由能方面的作用。通过检查A / B的长度比对AB共聚物的固定全链长的影响,A或B嵌段与相应的B或A嵌段的固定长的长度效应对共聚物的一种成分的影响不同量的两亲物组成对二元共聚物体系的影响。提供数量η来描述两亲物在内部和外部之间的不对称密度分布r单层囊泡,并量化二元组分囊泡中两种共聚物之间密度分布的相对不对称程度。

著录项

  • 来源
    《中国物理:英文版》 |2013年第3期|517-521|共5页
  • 作者

    Zhang Qi-Yi; Xiang Xun;

  • 作者单位

    Department of Mathematics and Physics, Chongqing University of Science and Technology, Chongqing 401331, China;

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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