Dual-cure photochemical/thermal polymerization of acrylates: a photoassisted process at low light intensity

Literature Information

Publication Date 2014-07-25
DOI 10.1039/C4PY00548A
Impact Factor 5.582
Authors

M. Retailleau, A. Ibrahim, X. Allonas


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Abstract

The dual-cure polymerization of an acrylate resin was investigated by combining a conventional technique (temperature measurement at the surface and in the deep zone) with confocal Raman microscopy. Polymerization was first characterized using a thermal initiator alone. Results showed that the thermal system polymerizes slowly and gradually, generating a thermal front that propagates from the bottom of the sample to the surface. Then, a photoinitiator was added to this thermal system. Unexpectedly, at the beginning of the reaction, the addition slows down the thermal polymerization reaction. But quickly, the reaction is accelerated and an almost fully cured material is obtained in a shorter time than the net thermal system. This behaviour highlights a surprising synergistic effect between the photoinitiator and the thermal initiator in the dual-cure polymerization of thick materials.

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Back cover

Cover

DOI: 10.1039/C8RE90004C

Emerging investigators

2011-01-04 Editorial

DOI: 10.1039/C0PY90031A

Inside front cover

2021-03-19 Front/Back Matter

DOI: 10.1039/C1PY90040D

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Polymer Chemistry

Polymer Chemistry
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