Next Article in Journal
Fatigue Behavior of 3D Braided Composites Containing an Open-Hole
Next Article in Special Issue
Mechanical Properties and Reliability of Parametrically Designed Architected Materials Using Urethane Elastomers
Previous Article in Journal
Denaturation Behavior and Kinetics of Single- and Multi-Component Protein Systems at Extrusion-Like Conditions
Review

Review on UV-Induced Cationic Frontal Polymerization of Epoxy Monomers

1
Polymer Competence Center Leoben GmbH, Rossegerstrasse 12, 8700 Leoben, Austria
2
Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, C.so Duca degli Abruzzi 24, I-10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(9), 2146; https://doi.org/10.3390/polym12092146
Received: 28 August 2020 / Revised: 17 September 2020 / Accepted: 18 September 2020 / Published: 20 September 2020
(This article belongs to the Special Issue Recent Advances in UV Polymerization—New Polymeric Materials)
Ultraviolet (UV)-induced cationic frontal polymerization has emerged as a novel technique that allows rapid curing of various epoxy monomers upon UV irradiation within a few seconds. In the presence of a diaryliodonium salt photoinitiator together with a thermal radical initiator, the cationic ring opening polymerization of an epoxide monomer is auto-accelerated in the form of a self-propagating front upon UV irradiation. This hot propagating front generates the required enthalpy to sustain curing reaction throughout the resin formulation without further need for UV irradiation. This unique reaction pathway makes the cationic frontal polymerization a promising route towards the efficient curing of epoxy-based thermosetting resins and related composite structures. This review represents a comprehensive overview of the mechanism and progress of UV-induced cationic frontal polymerization of epoxy monomers that have been reported so far in literature. At the same time, this review covers important aspects on the frontal polymerization of various epoxide monomers involving the chemistry of the initiators, the effect of appropriate sensitizers, diluents and fillers. View Full-Text
Keywords: photoinitiator; thermal initiator; UV light; cationic polymerization; epoxy monomers; frontal polymerization photoinitiator; thermal initiator; UV light; cationic polymerization; epoxy monomers; frontal polymerization
Show Figures

Graphical abstract

MDPI and ACS Style

Malik, M.S.; Schlögl, S.; Wolfahrt, M.; Sangermano, M. Review on UV-Induced Cationic Frontal Polymerization of Epoxy Monomers. Polymers 2020, 12, 2146. https://doi.org/10.3390/polym12092146

AMA Style

Malik MS, Schlögl S, Wolfahrt M, Sangermano M. Review on UV-Induced Cationic Frontal Polymerization of Epoxy Monomers. Polymers. 2020; 12(9):2146. https://doi.org/10.3390/polym12092146

Chicago/Turabian Style

Malik, Muhammad S.; Schlögl, Sandra; Wolfahrt, Markus; Sangermano, Marco. 2020. "Review on UV-Induced Cationic Frontal Polymerization of Epoxy Monomers" Polymers 12, no. 9: 2146. https://doi.org/10.3390/polym12092146

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop