Article
  • Synthesis and Thermal Degradation of Poly(dimethylsiloxane-arylester) Block Copolymer
  • Kang DH
  • Poly(dimethylsiloxane-arylester)블록 공중합체의 합성과 열분해
  • 강두환
Abstract
Propylamine terminated polymethylsiloxanes were synthesized by the reaction of bis (paminopropyl) tetramethyldisiloxane with octamethylcyclotetrasiloxane at 80℃, and bis (p-chloroformyl phenylene) terephthalates were synthesized from bis (p-carbetoxy phenylene) terephthalate produced by the reaction of terephthaloylchloride with ethyl-p-hydroxybenzoate in the solution of tetrachloroethane. Poly(dimethylsiloxane-arylester) block copolymers were prepared through the copolymerization of propyl amine terminated polydimethylsiloxane with bis (p-chloroformyl phenylene) tereptthalate in the solution of tetrachloroethane and tetraethylammoniumchloride. The identification of the products were made by IR and NMR spectra. The block copolymer was yellowish solid and depolymerization activation energies were calculated by dynamic and isothermal TGA data. The depolymerization activation energies for the copolymer containing 40 mole% siloxane unit were 48.35 Kcal from dydamic TGA and 61.65 Kcal from isothermal TGA measurement.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1985; 9(6): 525-530

    Published online Dec 25, 1985