A Structure-Properties Relationship Study of Self-Healing Materials Based on Styrene and Furfuryl Methacrylate Cross-Linked via Diels-Alder Chemistry

Patrizio Raffa*, Adamantia Kassi, Julian Gosschalk, Nicola Migliore, Lorenzo Massimo Polgar, Francesco Picchioni

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

A series of copolymers of styrene and furfuryl methacrylate characterized by various molecular structures (linear and star, block and random) is synthesized via atom transfer radical polymerization, and cross-linked with a bismaleimide by means of thermally reversible Diels-Alder (DA) reaction, to obtain self-healing materials. The prepared materials are studied in terms of gelation, swelling, thermal, and dynamic-mechanical analysis, with the aim of correlating relevant properties to their chemical structure. It is found that the furan/styrene ratio, as well as the molecular architecture, have a major influence on the properties. It is also found that the reversibility of the DA reaction is not complete in the solid state for materials with high cross-linking density. This study provides some important tools for the design of materials characterized by thermally reversible behavior, which find usually application as self-healing thermosets, coatings, or adhesives.

Original languageEnglish
Article number2000755
Number of pages14
JournalMacromolecular Materials and Engineering
DOIs
Publication statusE-pub ahead of print - 22-Feb-2021

Keywords

  • ATRP
  • Diels&#8211
  • Alder reactions
  • dynamic&#8208
  • mechanical properties
  • self&#8208
  • healing
  • swelling
  • thermal reversibility

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