Effect of Beta Radiation on the Quality of the Bonded Joint for Difficult to Bond Polyolefins
1
Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 275, 760 01 Zlin, Czech Republic
2
CEBIA-Tech, Faculty of Applied Informatics, Tomas Bata University in Zlin, Nad Stranemi 4511, 760 05 Zlin, Czech Republic
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(11), 1863; https://doi.org/10.3390/polym11111863
Received: 4 October 2019 / Revised: 7 November 2019 / Accepted: 8 November 2019 / Published: 12 November 2019
(This article belongs to the Special Issue Electron-Beam Irradiation Polymers)
Bonding is increasingly being used, and it is an ever-evolving method for creating unbreakable bonds. The strength of adhesive bonds determines, to a significant extent, the possible applications of this technology and is influenced by many factors. In addition to the type of adhesive used, the characteristics of the surface layers play a significant role; therefore, significant attention is paid to their adjustment and modification. Radiation crosslinking is one of the most important methods for modifying polymer properties. Currently, the most frequently used type of radiation for polymer crosslinking is beta minus (β−) radiation, which affects not only mechanical but also surface properties, chemical and temperature resistance, and surface layer characteristics of polymers. This study investigated the effect of β− radiation on the surface layer properties of low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP) and the effects of surface-layer modification on the ultimate tensile strength of bonded joints. Based on the results, we concluded that β− radiation significantly changes the properties of the tested surface layers, increases the surface energy, and improves the adhesiveness of bonds. Consequently, the final strength of the LDPE, HDPE, and PP bonds increases significantly.
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Keywords:
adhesion; radiation crosslinking; beta radiation; wetting contact angle; free surface energy; oxidation; bonded joints; polyethylene; polypropylene
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MDPI and ACS Style
Manas, D.; Bednarik, M.; Mizera, A.; Manas, M.; Ovsik, M.; Stoklasek, P. Effect of Beta Radiation on the Quality of the Bonded Joint for Difficult to Bond Polyolefins. Polymers 2019, 11, 1863. https://doi.org/10.3390/polym11111863
AMA Style
Manas D, Bednarik M, Mizera A, Manas M, Ovsik M, Stoklasek P. Effect of Beta Radiation on the Quality of the Bonded Joint for Difficult to Bond Polyolefins. Polymers. 2019; 11(11):1863. https://doi.org/10.3390/polym11111863
Chicago/Turabian StyleManas, David; Bednarik, Martin; Mizera, Ales; Manas, Miroslav; Ovsik, Martin; Stoklasek, Pavel. 2019. "Effect of Beta Radiation on the Quality of the Bonded Joint for Difficult to Bond Polyolefins" Polymers 11, no. 11: 1863. https://doi.org/10.3390/polym11111863
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