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Shape-Memory Assisted Scratch-Healing of Transparent Thiol-Ene Coatings

Institute of Materials Science, Kaunas University of Technology, K. Baršausko 59, LT51423 Kaunas, Lithuania
Author to whom correspondence should be addressed.
Materials 2019, 12(3), 482;
Received: 16 January 2019 / Revised: 24 January 2019 / Accepted: 1 February 2019 / Published: 4 February 2019
(This article belongs to the Special Issue Photoactive Materials: Synthesis, Applications and Technology)
A photopolymerizable thiol-ene composition was prepared as a mixture of pentaerythritol tetrakis(3-mercaptopropionate) (PETMP) and 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (TTT), with 1 wt. % of 2,2-dimethoxy-2-phenylacetophenone (DMPA) photoinitiator. A systematic analytical analysis that investigated the crosslinked PETMP-TTT polymer coatings employed Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, differential scanning calorimetry, thermogravimetric analysis, pencil hardness, thermo-mechanical cyclic tensile, scratch testing, and atomic force microscopy. These coatings exhibited high optical transparency and shape-memory that assisted scratch-healing properties. Scratches produced on the PETMP-TTT polymer coatings with different constant loadings (1.2 N, 1.5 N, and 2.7 N) were completely healed after the external stimulus was applied. The strain recovery ratio and total strain recovery ratio for PETMP-TTT polymer were found to be better than 94 ± 1% and 97 ± 1%, respectively. The crosslinked PETMP-TTT polymer network was also capable of initiating scratch recovery at ambient temperature conditions. View Full-Text
Keywords: photopolymerizable; thiol-ene network; scratch-healing; transparent photopolymerizable; thiol-ene network; scratch-healing; transparent
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MDPI and ACS Style

Lazauskas, A.; Jucius, D.; Baltrušaitis, V.; Gudaitis, R.; Prosyčevas, I.; Abakevičienė, B.; Guobienė, A.; Andrulevičius, M.; Grigaliūnas, V. Shape-Memory Assisted Scratch-Healing of Transparent Thiol-Ene Coatings. Materials 2019, 12, 482.

AMA Style

Lazauskas A, Jucius D, Baltrušaitis V, Gudaitis R, Prosyčevas I, Abakevičienė B, Guobienė A, Andrulevičius M, Grigaliūnas V. Shape-Memory Assisted Scratch-Healing of Transparent Thiol-Ene Coatings. Materials. 2019; 12(3):482.

Chicago/Turabian Style

Lazauskas, Algirdas, Dalius Jucius, Valentinas Baltrušaitis, Rimantas Gudaitis, Igoris Prosyčevas, Brigita Abakevičienė, Asta Guobienė, Mindaugas Andrulevičius, and Viktoras Grigaliūnas. 2019. "Shape-Memory Assisted Scratch-Healing of Transparent Thiol-Ene Coatings" Materials 12, no. 3: 482.

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