Journal article
Recent advances to decrease shrinkage stress and enhance mechanical properties in free radical polymerization: a review
Polymer international, Vol.71(5), pp.596-607
12/11/2021
DOI: 10.1002/pi.6341
Abstract
Free radical polymerizations have been widely used for a variety of applications, including coating, packaging, adhesives, inks and dental materials. However, shrinkage stress in network systems due to volumetric shrinkage during polymerization often results in poor mechanical performance of final materials, often limiting end use. Delaying gelation during polymerization while incorporating functional structure or functionalized groups into the polymer networks may lead to significantly reduced shrinkage stress and, consequently, enhanced thermomechanical properties. In this review, we summarize several practical methods, including thiol–ene radical polymerization, addition–fragmentation chain transfer, controlled radical polymerization, covalent adaptable networks, ring-opening polymerization and cyclopolymerization, that have shown promise in reducing volumetric shrinkage and associated stress in network-forming systems. The resulting enhanced (thermo)mechanical material properties of these modified polymers are also introduced. These methods have proven to be powerful tools for fabricating polymers with novel functionality and properties and thereby show potential to expand application of free radical thermoset materials.
Details
- Title: Subtitle
- Recent advances to decrease shrinkage stress and enhance mechanical properties in free radical polymerization: a review
- Creators
- Huayang Fang - Department of Chemical and Biochemical Engineering University of Iowa Iowa City IA USAC. Allan Guymon - Department of Chemical and Biochemical Engineering University of Iowa Iowa City IA USA
- Resource Type
- Journal article
- Publication Details
- Polymer international, Vol.71(5), pp.596-607
- DOI
- 10.1002/pi.6341
- ISSN
- 0959-8103
- eISSN
- 1097-0126
- Language
- English
- Date published
- 12/11/2021
- Academic Unit
- Chemical and Biochemical Engineering
- Record Identifier
- 9984210355202771
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