writer：Tian, Yuelan; Song, Hongzan ; Gu, Fang ; Bai, liben；Wang haijun；Ba xinwu.
keywords：Star-shape polymers; Subchains; Monomer sequences; Mean-square radius of gyration
source：期刊
specific source：PHYSICS LETTERS A
Issue time：2019年
The general treatment is proposed to investigate the explicit expressions of the average number of subchains with definite monomer sequences on the polymer skeleton, in which the AB + A(f) type polycondensation is chosen as the classical model of polymerization. The linear homo-polymers and star shape co-polymers are examined to derive the z-average mean-square radius of gyration, respectively, where the mass of monomers are taken into consideration. Furthermore, the z-average mean-square radius of gyration of mixture sample is calculated, in which the weight factors of the co-polymer and homo-polymer for the non-fractionated samples are examined analytically. (C) 2019 Elsevier B.V. All rights reserved.