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Open AccessArticle

Influence of Ultraviolet Radiation Exposure Time on Styrene-Ethylene-Butadiene-Styrene (SEBS) Copolymer

Materials Science Division, Technological Institute of Materials, Universitat Politècnica de València, 03801 Alcoy, Alicante, Spain
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Polymers 2020, 12(4), 862; https://doi.org/10.3390/polym12040862
Received: 5 February 2020 / Revised: 26 March 2020 / Accepted: 27 March 2020 / Published: 9 April 2020
The effect of ultraviolet radiation on styrene-ethylene-butadiene-styrene (SEBS) has been studied at different exposures times in order to obtain a better understanding of the mechanism of ageing. The polymer materials were mechanically tested and then their surfaces were analyzed using a scanning electron microscope (SEM) and atomic force microscopy (AFM). Moreover, the optical analysis of contact angle (OCA) was used to evaluate the surface energy (γs) and the yellowing index (YI) and attenuated total reflectance infrared spectroscopy (ATR–FTIR) were used to observe structural and physical changes in aging SEBS. The results obtained for the SEBS, in relation to the duration of exposure, showed superficial changes that cause a decrease in the surface energy (γs) and, therefore, a decrease in surface roughness. This led to a reduction in mechanical performance, decreasing the tensile strength by about 50% for exposure times of around 200 h. View Full-Text
Keywords: surface modification; degradation; AFM; mechanical properties; block copolymer surface modification; degradation; AFM; mechanical properties; block copolymer
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MDPI and ACS Style

Garcia-Garcia, D.; Crespo-Amorós, J.E.; Parres, F.; Samper, M.D. Influence of Ultraviolet Radiation Exposure Time on Styrene-Ethylene-Butadiene-Styrene (SEBS) Copolymer. Polymers 2020, 12, 862.

AMA Style

Garcia-Garcia D, Crespo-Amorós JE, Parres F, Samper MD. Influence of Ultraviolet Radiation Exposure Time on Styrene-Ethylene-Butadiene-Styrene (SEBS) Copolymer. Polymers. 2020; 12(4):862.

Chicago/Turabian Style

Garcia-Garcia, Daniel; Crespo-Amorós, José E.; Parres, Francisco; Samper, María D. 2020. "Influence of Ultraviolet Radiation Exposure Time on Styrene-Ethylene-Butadiene-Styrene (SEBS) Copolymer" Polymers 12, no. 4: 862.

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