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    Title: Kinetic model of hyperbranched polymers formed by the polymerization of AB2 monomer with a substitution effect
    Authors: Cheng, Kuo-chung;董崇民;Don, Trong-ming;Guo, Wenjeng;Chuang, Tsu-hwang
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Hyperbranched polymer;Substitution effect;Generating function
    Date: 200210
    Issue Date: 2010-03-09 10:04:31 (UTC+8)
    Publisher: Elsevier
    Abstract: Hyperbranched polymers obtained by the polymerization of AB2-type monomer with a substitution effect on the B2 groups were studied by means of the kinetic model. In this polymerization with the substitution effect, if one of the B2 group reacts first, the reactivity of the remaining unreacted B group will be changed. The profiles of the degree of polymerization, polydispersity, degree of branching, and structural units of the hyperbranched polymers with the conversions were all calculated by the generating function method. It is shown that the weight-average degree of polymerization and the degree of branching of the hyperbranched polymers having substitution effect differ from that with equal reactivity of the B2 groups. If the substitution effect causes an increase in the rate constant after one of the B2 groups has reacted, a broader molecular weight distribution and a higher degree of branching are observed.
    Relation: Polymer 43(23), pp.6315-6322
    DOI: 10.1016/S0032-3861(02)00545-1
    Appears in Collections:[化學工程與材料工程學系暨研究所] 期刊論文

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