蠕虫状链在具有低分子量嵌段共聚物体系的应用
详细信息 查看官网全文
- 英文论文题名：Applications of the wormlike chain on block copolymers with low-molecular weight
- 论文作者：蒋滢 ; 张兴华 ; 苗兵 ; 严大东 ; 陈征宇
- 英文论文作者：Ying Jiang ; Xinhua Zhang ; Bing Miao ; Dadong Yan ; Jeff Z.Y.Chen ; Center of Soft Matter Physics and its Applications ; Beihang University ; School of Science ; Beijing Jiaotong University ; College of Materials Science and Opto-Electronic Technology ; University of Chinese Academy of Sciences ; Department of Physics ; Beijing Normal University ; Department of Physics and Astronomy ; University of Waterloo
- 年：2016
- 作者机构：北航软物质物理应用研究中心;北京交通大学理学院;中国科学院大学材料科学与光电技术学院;北京师范大学物理系;加拿大滑铁卢大学;
- 论文关键词：蠕虫状链 ; 嵌段共聚物 ; 自洽场
- 会议召开时间：2016-08-25
- 会议录名称：中国化学会2016年软物质理论计算与模拟会议论文摘要集
- 语种：中文
- 分类号：O631.1
- 学会代码：ZGHY
- 会议名称：中国化学会2016年软物质理论计算与模拟会议
- 会议地点：中国天津
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：2
- 文件大小：225k
- 原文格式：D
- 会议级别：全国
摘要
具有较低分子量的短链嵌段共聚物,能够自组装形成较小尺寸的微相结构,近年来逐渐被应用于为获得尺寸在20nm以下微相结构的平板印刷术(lithography)研究中。对比于长链嵌段共聚物,短链高分子的聚合度N与Flory-Huggins相互作用参数?是相互独立的变量。由于短链具有较小的链构象熵,因此会在更低的?值处发生相分离。此外,随着聚合物的N变小,链段单体的体积效应也会在体系发生相分离时产生重要影响。我们采用基于蠕虫状链的自洽平均场方法,并结合random-phase-approximation理论方法,研究了短链嵌段共聚物自组装相行为。研究关注于短链构象熵变化和不同组分链段间相互作用的有限力程耦合作用下,对相分离微相结构物理性质的影响。
We investigate several structural properties of low-molecular weight AB diblock copolymer melts,focusing on a number of features that substantially deviate from those of high-molecular weight copolymer melts.The study is based on the wormlike chain formalism aided by random phase approximation and self-consistent field theory.We examine the effects that stemmed from both the finite molecular weight and the finite interaction range between unlike AB monomers.The latter yields profound effects on systems consisting of short wormlike block copolymers.The noticeable shift of the order–disorder transition point is discussed.Attention is also paid to the strong-segregation regime,where low molecular weight polymers are subject to finite stretchability.
We investigate several structural properties of low-molecular weight AB diblock copolymer melts,focusing on a number of features that substantially deviate from those of high-molecular weight copolymer melts.The study is based on the wormlike chain formalism aided by random phase approximation and self-consistent field theory.We examine the effects that stemmed from both the finite molecular weight and the finite interaction range between unlike AB monomers.The latter yields profound effects on systems consisting of short wormlike block copolymers.The noticeable shift of the order–disorder transition point is discussed.Attention is also paid to the strong-segregation regime,where low molecular weight polymers are subject to finite stretchability.
引文
[1]Jiang,Y.;Zhang,X.-H.,Miao,B.;Yan,D.-D.;Chen,J.Z.Y.Soft Matter.2016,12:2481.