文献类型：期刊文献

英文题名：Supramolecular assembly of diblock copolymer blends with hydrogen-bonding interactions modeled by Yukawa potentials

作者：Zhang, Xu[1];Lin, Jingyuan[2];Wang, Liquan[1];Zhang, Liangshun[1];Lin, Jiaping[1];Gao, Liang[1]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, State Key Lab Bioreactor Engn,Minist Educ, Key Lab Ultrafine Mat,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Shanghai Ocean Univ, Sch Marine Sci, Shanghai 201306, Peoples R China

年份：2015

卷号：78

起止页码：69

外文期刊名：POLYMER

收录：;EI(收录号：20154101361053);WOS:【SCI-EXPANDED(收录号:WOS:000364050700009)】；

基金：This work was supported by National Natural Science Foundation of China (21304035, 21234002, 21474029), Key Grant Project of Ministry of Education (313020), National Basic Research Program of China (No. 2012CB933600), Fundamental Research Funds for the Central Universities (222201314024), and Research Fund for the Doctoral Program of Higher Education of China (20120074120002). Support from project of Shanghai Municipality (13JC1402001) is also appreciated.

语种：英文

外文关键词：Assembly; Hydrogen bond; Self-consistent field theory

摘要：We extended self-consistent field theory to study the phase behavior of supramolecular blends of diblock copolymers with hydrogen-bonding interactions. The hydrogen-bonding interactions are described by Yukawa potentials. The hydrogen-bonding donors and acceptors were modeled as two blocks smeared with opposite screened charges. Hierarchical microstructures such as parallel and perpendicular lamellae-in-lamellae were observed. The appearance of parallel/perpendicular lamellae-in-lamellae depends on the strength of hydrogen-bonding interactions related to the density of hydrogen bonds and the characteristic lengths of the Yukawa potentials. Phase diagrams were correspondingly mapped out, and the domain size, interfacial width and free energies were examined to gain insight into the phase transitions. It was also found that the revealed mechanism can account for some experimental phenomena that are not well explained yet. The present method can be readily further extended to more complicated supramolecular systems with hydrogen-bonding interactions. (C) 2015 Elsevier Ltd. All rights reserved.