SOLVENT INDUCED MORPHOLOGICAL TRANSITION IN THE THIN FILMS OF BINARY MIXTURES OF DIBLOCK COPOLYMER: BLOCK LENGTH AND COMPOSITION DEPENDENCE OF MORPHOLOGY
Polydispersity, as one of the inherent ingredients which significantly influence the interfacial curvature and domain spacing of the self-assembly of block copolymers, has attracted many attention in recent years 1. Blending of block copolymers with different molecular weight and composition breaking the interdependence between morphology and volume fraction, which induces the change of the interfacial curvature, can be a useful protocol to investigate the effect of polydispersity in molecular weight distribution. In our previous work, we found that the existence of the solvent field and the confinement of the thin film had notable effect on the interface curvature of the nearly monodispersed neat block copolymers. Along this line, in this study, we aimed to explore how the factors of solvent field and the confinement can influence the transformation of interface curvature and resulting morphology of the discrete distribution systems of binary mixtures of diblock copolymers, poIy(styrene-b-butadiene) (SB), with different block length and composition.
Rui Guo Haiying Huang Yumei Gong Yongzhong Chen Tianbai He
State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,P.R.China
国际会议
International Symposium on Polymer Physics(2008年国际高分子物理学术会议PP2008)
厦门
英文
381-382
2008-06-08（万方平台首次上网日期，不代表论文的发表时间）