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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (14): 1707-1712. 上一篇    下一篇

研究论文

嵌段共聚物和星型均聚物共混体系相行为的自洽场理论研究

韩文驰 唐 萍* 张红东 杨玉良   

  1. (聚合物分子工程教育部重点实验室 复旦大学高分子科学系 上海 200433)
  • 投稿日期:2007-11-23 修回日期:2008-01-31 发布日期:2008-07-28
  • 通讯作者: 唐萍

Phase Behavior Study of Diblock Copolymer and Star Homopolymer Blend by Self-consistent Field Theory

HAN, Wen-Chi TANG, Ping* ZHANG, Hong-Dong YANG, Yu-Liang   

  1. (Key Laboratory of Molecular Engineering of Polymer of Ministry of Education, and Department of Macromolecular Science, Fudan University, Shanghai 200433)
  • Received:2007-11-23 Revised:2008-01-31 Published:2008-07-28
  • Contact: TANG, Ping

PDF

658

被引次数

14

用自洽场理论方法(Self-consistent field theory, SCFT)计算了嵌段共聚物AB和三等臂星型均聚物A共混体系的微相形态. 为了简化计算, 着重讨论了固定嵌段共聚物本体的相形态(如层状相)时, 所加入的均聚物的体积分数及均聚物与嵌段共聚物链长之比对体系相形态的影响; 并结合体系的熵和相互作用能的变化, 讨论了星型均聚物在体系微相结构中的分布.

关键词: 自洽场理论, 嵌段共聚物, 星型均聚物, 共混

The microphases of blend of AB diblock copolymer and 3-arm A star homopolymer were calculated by using self-consistent field theory (SCFT). The lamellae phase of AB diblock copolymer melts was considered in order to simplify the calculation. It was found that the phase behavior of the blend depended on both the chain length and volume fraction of the star homopolymer. The distribution of star homopolymer within the microphases was investigated based on enthalpic and entropic effects.

Key words: self-consistent field theory (SCFT), diblock copolymer, star homopolymer, blend