title: Microphase separation of short wormlike diblock copolymers with a finite interaction range.
abstract: 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.
authors.affiliation: School of Chemistry and Environment, Center of Soft Matter Physics and its Applications, Beihang University, Beijing 100191, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: School of Science, Beijing Jiaotong University, Beijing 100044, China. zhangxh@bjtu.edu.cn.
authors.forename: Xinghua
authors.initials: X
authors.lastname: Zhang
authors.affiliation: College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China. bmiao@ucas.ac.cn.
authors.forename: Bing
authors.initials: B
authors.lastname: Miao
authors.affiliation: Department of Physics, Beijing Normal University, Beijing 100875, China.
authors.forename: Dadong
authors.initials: D
authors.lastname: Yan
authors.affiliation: Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
authors.forename: Jeff Z Y
authors.initials: JZ
authors.lastname: Chen