Ester-Activated Vinyl Ethers as Chain Transfer Agents in Radical Photopolymerization of Methacrylates

Gernot Peer, Anna Eibel, Christian Gorsche, Yohann Catel, Georg Gescheidt, Norbert Moszner, Robert Liska*

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

The regulation of multifunctional methacrylates to yield tough photopolymers is a widely researched topic, whereby addition-fragmentation chain transfer (AFCT) agents represent one viable class of additives. Vinyl ethers have been described as potent AFCT agents in radical polymerization but are unexamined in network formation via photopolymerization. In this article, we present a sterically hindered vinyl ether as AFCT agent for methacrylate networks, which shows enhanced acid stability opposed to vinyl ethers described in the literature. After synthesis and confirmation of the efficient regulation in a monofunctional system, the reactivity and mechanical properties in a difunctional methacrylate were evaluated. An increase in double bond conversion, significantly lower shrinkage stress, and high toughness were assessed and substantiated the great potential of this compound in photopolymerizable resins.

Originalspracheenglisch
Seiten (von - bis)2691-2700
Seitenumfang10
FachzeitschriftMacromolecules
Jahrgang52
Ausgabenummer7
DOIs
PublikationsstatusVeröffentlicht - 9 Apr 2019

ASJC Scopus subject areas

  • Organische Chemie
  • !!Polymers and Plastics
  • Anorganische Chemie
  • !!Materials Chemistry

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