Article
  • Polymerization of Vinyl Acetate Initiated by Hydrosilane in the Presence of Platinum Complex

  • Ming Yuan, Wenxian Zhu, Jiaxing Lv, Panpan Zhang*, and Huadong Tang†

  • Institute of Industrial Catalysis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
    *State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, Zhejiang 310027, China

  • 백금계 촉매와 Hydrosilane 개시제를 이용한 아세트산 비닐 합성

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

In this work, a series of hydrosilanes including phenylsilane, diphenylsilane, triethylsilane (TES), and tris(trimethylsilyl)silane combined with catalytical amount of platinum complex such as dichloro(1,5-cyclooctadiene)platinum (COD) and dichloro(dicyclopentadienyl)platinum have been used to initiate the polymerization of vinyl acetate (VAc) at 70-95 ºC. An ultrahigh molecular weight PVAc with number-average molecular weight (Mn) up to 1.17×106 Da and polydispersity index (PDI) of 2.59 has been synthesized using TES as an initiator in the presence of 9.7 ppm of COD. A kinetic study indicates that the polymerization at VAc/TES/COD molar ratio = 3.0×105 : 60 : 1 smoothly reached 81.0% conversion in 28.0 h at 85 ºC, producing PVAc with Mn increasing linearly from 1.41×105 to 6.01×105 Da with the increase of monomer conversion. A mechanistic investigation revealed that COD was firstly reduced by reductive TES, producing Pt nanoparticles and corresponding silane radicals to initiate the polymerization of VAc


Keywords: vinyl acetate, polymerization, hydrosilane, kinetics, mechanism

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2021; 45(3): 428-436

    Published online May 31, 2021

  • 10.7317/pk.2021.45.3.428
  • Received on Dec 24, 2020
  • Revised on Jan 31, 2021
  • Accepted on Feb 22, 2021

Correspondence to

  • Huadong Tang

  • Institute of Industrial Catalysis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China

  • E-mail: thd@zjut.edu.cn