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Coatings 2018, 8(3), 99; https://doi.org/10.3390/coatings8030099

Evaluation of the Ultraviolet-Curing Kinetics of Ultraviolet-Polymerized Oligomers Cured Using Poly (Ethylene Glycol) Dimethacrylate

1
Program in Environmental Materials Science, College of Agriculture & Life Sciences, Seoul National University, Seoul 08826, Korea
2
Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
3
Samsung Display, Asan-si, Chungcheongnam-do 31454, Korea
*
Author to whom correspondence should be addressed.
Received: 27 January 2018 / Revised: 4 March 2018 / Accepted: 6 March 2018 / Published: 9 March 2018
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Abstract

Ultraviolet (UV)-curable oligomers are increasingly being used in various industries because they can be applied rapidly and have excellent physical properties. Ultraviolet polymerization is used for manufacturing such oligomers. Reactive diluents, which are employed during the secondary curing of UV-curable oligomers, can help elucidate the curing behaviors of these oligomers. In this study, poly (ethylene glycol) dimethacrylate (PEGDMA) was used as the reactive diluent for UV-curable oligomers. Photodifferential scanning calorimetry (photo-DSC) and shrinkage measurements revealed that the curing behavior of the polymers was dependent on the size and number of molecules of PEGDMA. The effect of the small-size PEGDMA on curing behavior was greater than that of the larger molecules. Further, in most cases, the use of a larger amount of PEGDMA resulted in lower reactivity. View Full-Text
Keywords: UV-curable oligomer; UV polymerization; UV-curing behavior; photo-DSC; shrinkage UV-curable oligomer; UV polymerization; UV-curing behavior; photo-DSC; shrinkage
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Park, J.-W.; Lee, J.-G.; Shim, G.-S.; Kim, H.-J.; Kim, Y.-K.; Moon, S.-E.; No, D.-H. Evaluation of the Ultraviolet-Curing Kinetics of Ultraviolet-Polymerized Oligomers Cured Using Poly (Ethylene Glycol) Dimethacrylate. Coatings 2018, 8, 99.

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