Controllable Nanostructural Transitions in Grafted Nanoparticle-Block Copolymer Composites

作     者：Guang-Kui Xu Xi-Qiao Feng 

作者机构：Shou-Wen Yu Institute of Biomechanics and Medical EngineeringDepartment of Engineering MechanicsTsinghua UniversityBeijing 100084China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2010年第3卷第5期

页      面：356-362页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Support from the National Natural Science Foundation of China(Nos.10972121,10732050,and 10772093) the Ministry of Education(SRFDP 20090002110047) and the 973 program of MOST(No.2010CB631005)are acknowledged 

主　　题：Block copolymer nanocomposite pattern formation self-assembly self-consistent field theory 

摘      要：We report a theoretical investigation of self-assembled nanostructures of polymer-grafted nanoparticles in a block copolymer and explore underlying physical mechanisms by employing the self-consistent field method. By varying the particle concentration or the chain length and density of the grafted polymer, one can not only create various ordered morphologies (e.g., lamellar or hexagonally packed patterns) but also control the positions of nanoparticles either at the copolymer interfaces or in the center of one-block domains. The nanostructural transitions we here report are mainly attributed to the competition between entropy and enthalpy.