文献类型：期刊文献

英文题名：Phase behavior of ternary systems involving a conformationally variable chain and a randomly coiled polymer

作者：Lin, Jiaping[1]; Lin, Shaoliang[1]; Liu, Peihai[1]; Hiejima, Toshihiro[2]; Furuya, Hidemine[3]; Abe, Akihiro[2]

机构：[1]E China Univ Sci & Technol, Dept Polymer Sci & Engn, Shanghai 200237, Peoples R China;[2]Tokyo Inst Polytech, Dept Appl Chem, Atsugi, Kanagawa 243, Japan;[3]Tokyo Inst Technol, Dept Organ & Polymer Mat, Tokyo 152, Japan

年份：2003

卷号：36

期号：16

起止页码：6267

外文期刊名：MACROMOLECULES

收录：;EI(收录号：2003367620342);WOS:【SCI-EXPANDED(收录号:WOS:000184628000053)】；

语种：英文

外文关键词：Conformations - Free energy - Mathematical models - Molecular structure - Organic solvents - Phase composition - Solubility - Ternary systems

摘要：Ternary systems consisting of a conformationally variable chain capable of assuming either a rodlike helix or a random coil conformation, a randomly coiled polymer, and a solvent were treated according to the lattice model proposed by Flory. The partition function has been derived in consideration of the Flory-Matheson expression related to the free energy contribution from the chain conformation changes. A marked increase of the miscible isotropic zone was predicted when the chain rigidity of the conformationally variable polymer in the isotropic phase is reduced. The conformationally variable chain tends to adopt a rodlike form as long as it enters the anisotropic phase in which the randomly coiled polymer is essentially excluded. The influence of various molecular structure parameters, solvent-polymer interaction, and temperature was also studied.