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Polymers 2018, 10(2), 158;

The Effect of Irradiation on Mechanical and Thermal Properties of Selected Types of Polymers

Tomas Bata University in Zlin, Faculty of Technology, Vavreckova 275, 760 01 Zlín, Czech Republic
Tomas Bata University in Zlin, Faculty of Applied Informatics, CEBIA-Tech, Nad Stranemi 4511, 760 05 Zlin, Czech Republic
This article is dedicated, in memoriam, to Assoc. Prof. David Manas.
Author to whom correspondence should be addressed.
Received: 4 December 2017 / Revised: 2 February 2018 / Accepted: 5 February 2018 / Published: 7 February 2018
(This article belongs to the Special Issue Model-Based Polymer Processing)
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This article deals with the influence of electron-beam radiation on the micro-mechanical, thermo-mechanical, and structural properties of selected polymers. In the search for the desired improvement of polymers, it is possible to use, inter alia, one particular possible modification—Namely, crosslinking—Which is a process during which macromolecular chains start to connect to each other and, thus, create the spatial network in the structure. In the course of the treatment of the ionizing radiation, two actions can occur: crosslinking and scission of macromolecules, or degradation. Both these processes run in parallel. Using the crosslinking technology, standard and technical polymers can acquire the more “expensive” high-tech polymeric material properties and, thus, replace these materials in many applications. The polymers that were tested were selected from across the whole spectra of thermoplastics, ranging from commodity polymers, technical polymers, as well as high-performance polymers. These polymers were irradiated by different doses of beta radiation (33, 66, 99, 132, 165, and 198 kGy). The micro-mechanical and thermo-mechanical properties of these polymers were measured. When considering the results, it is obvious that irradiation acts on each polymer differently but, always when the optimal dose was found, the mechanical properties increased by up to 36%. The changes of micro-mechanical and thermo-mechanical properties were confirmed by structural measurement when the change of the micro-hardness and modulus corresponded to the crystalline phase change as determined by X-ray and gel content. View Full-Text
Keywords: crosslinking; beta rays; micro-indentation; TMA (thermo-mechanical analysis); X-ray; gel content crosslinking; beta rays; micro-indentation; TMA (thermo-mechanical analysis); X-ray; gel content

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Manas, D.; Ovsik, M.; Mizera, A.; Manas, M.; Hylova, L.; Bednarik, M.; Stanek, M. The Effect of Irradiation on Mechanical and Thermal Properties of Selected Types of Polymers. Polymers 2018, 10, 158.

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