文献类型：期刊文献

英文题名：Exploring Microstructures and Interphase Properties of Surface- Grafted Diblock Copolymers in a Homopolymer Melt by Self-Consistent Field Theory Simulations

作者：Deng, Shuanghui[1];Zhang, Liangshun[2];Zhou, Xiaodong[1];Fan, Chuanjie[1];Lin, Qunfang[2];Lin, Jiaping[2]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：54

期号：3

起止页码：348

外文期刊名：JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS

收录：;EI(收录号：20151200658816);WOS:【SCI-EXPANDED(收录号:WOS:000351237000011)】；

基金：The authors sincerely acknowledge the support of NSFC51073055 and 51203049 and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：interphase properties; microstructures; polymer matrix; self-consistent field theory; surface-grafted diblock copolymers

摘要：Polymeric self-consistent field theory is used to investigate microstructures and interphase properties of diblock copolymers grafted onto solid surfaces in a homopolymer melt. The calculations show that the grafted diblock copolymers can self-assemble into hemispherical microstructures at low grafting densities of the diblock copolymers. The morphology transforms into hemicylinder-like and sandwich-like lamellar microstructures with an increase in the chain-grafting density. The effective thickness of the grafted block layer and the interphase width between the homopolymer melt and the grafted copolymers strongly depend on the physicochemical parameters of the system, such as the composition of the grafted copolymer, the chemical incompatibility between the different components, the length ratio of grafted copolymer to homopolymer, and the grafting density of the diblock copolymers. In addition, the above computational results of microphase-separated structures and interphase properties are qualitatively compared with our previous experimental observations. The comparison indicates that our theoretical results not only reproduce the general feature of the experimental observations, but also elucidate the internal structural information and complement the findings in the region of high grafting densities of diblock copolymers.