Monte Carlo simulation of molecular weight distribution and copolymer composition in transamidation reaction of polyamides

Authors

  • Zhen Yao,

    1. Institute of Polymerization and Polymer Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author
  • Jia-Ming Sun,

    1. Institute of Polymerization and Polymer Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author
  • Qiang Wang,

    1. Institute of Polymerization and Polymer Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author
  • Guang-Da Zhou,

    1. Institute of Polymerization and Polymer Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author
  • Kun Cao

    Corresponding author
    1. State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    2. Institute of Polymerization and Polymer Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    • State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
    Search for more papers by this author

Abstract

Melt mixing of polyamides results in exchange reaction and generation of copolymers. In this work, Monte Carlo method is used to simulate the time evolution of molecular weight distribution (MWD) and copolymer composition during the exchange reaction process between polyamides with AA and BC structure. The influences of initial composition and molecular weight have been investigated. Decrease in the difference between the average molecular weight of two kinds of polyamides results in faster approach of the MWD toward Flory's distribution and higher probability of producing copolymers. When the ratio between the numbers of initial molecules of two homopolymers is increased, the number of generated copolymers is reduced and the wider MWD is obtained. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Ancillary