不同AB线型嵌段共聚物分子对自组装结构周期影响的研究  

Effect of Architecture on the Domain Spacing of AB-Type Block Copolymer’s Self-Assembly

作　　者：赵斌 胡珺玥 Zhao Bin;Hu Junyue(School of Electronics and Information Engineering,Taizhou University,Taizhou 318000,China)

机构地区：[1]台州学院电子与信息工程学院,浙江台州318000

出　　处：《台州学院学报》2021年第3期48-53,共6页Journal of Taizhou University

基　　金：台州学院校立培育项目(Z2018047)。

摘　　要：通常条件下,AB型嵌段共聚物的自组装行为受到分子结构、体积分数、外部环境以及链段之间相互作用强度等参数的影响。本文通过自洽平均场理论,研究AB型嵌段共聚物分子的链段数目,以及对其自组装形成的层状结构和六角柱结构周期的影响。理论计算结果表明:在嵌段数目保持不变的条件下,自组装形成的结构周期在焓的作用下随着相互作用强度的增加而增加;同时,在相互作用强度相同的条件下,嵌段共聚物自组装形成的结构周期在熵的作用下随着嵌段数目的增加而减少。Generally,the self-assembly behaviors of block copolymer is governed by molecular architecture,volume fraction,environmental condition,interaction parameter(χ~N)and so on.In this paper,the domain spacing of lamellar and cylinderical morphologies self-assembled by the linear AB-type block copolymers is investigated by using the self-consistent field theory(SCFT),in which the number of blocks is changed.Interestingly,we find that domain spacing of the self-assembled morphologies is increased as theχ~N enhanced for fixed number of blocks,which is resulted from the enthalpy.Meantime,the domain spacing of the self-assembled morphologies is decreased as the number of blocks is increased for fixχ~N,resulting from the entropy.

关 键 词：嵌段共聚物 自组装 自洽场理论 

分 类 号：O631.1[理学—高分子化学]