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Article

Mechano-Chemical Properties of Electron Beam Irradiated Polyetheretherketone

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Department of Science and Innovation, Astana IT University, Nur-Sultan 010000, Kazakhstan
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Department of Physics, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
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Surface Engineering Tribology Centre, Amanzholov University, Oskemen 070020, Kazakhstan
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Department of Engineering, Astana International University, Nur-Sultan 010000, Kazakhstan
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School of Nuclear Engineering, Purdue University, West Lafayette, IN 47907, USA
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Department of Condensed Matter Physics, National Research Nuclear University MEPhI, 115409 Moscow, Russia
*
Authors to whom correspondence should be addressed.
Academic Editors: Maria Bercea and Antonio Pantano
Polymers 2022, 14(15), 3067; https://doi.org/10.3390/polym14153067
Received: 20 May 2022 / Revised: 24 June 2022 / Accepted: 18 July 2022 / Published: 29 July 2022
(This article belongs to the Section Polymer Analysis and Characterization)
In this study, the mechano-chemical properties of aromatic polymer polyetheretherketone (PEEK) samples, irradiated by high energy electrons at 200 and 400 kGy doses, were investigated by Nanoindentation, Brillouin light scattering spectroscopy and Fourier-transform infrared spectroscopy (FTIR). Irradiating electrons penetrated down to a 5 mm depth inside the polymer, as shown numerically by the monte CArlo SImulation of electroN trajectory in sOlids (CASINO) method. The irradiation of PEEK samples at 200 kGy caused the enhancement of surface roughness by almost threefold. However, an increase in the irradiation dose to 400 kGy led to a decrease in the surface roughness of the sample. Most likely, this was due to the processes of erosion and melting of the sample surface induced by high dosage irradiation. It was found that electron irradiation led to a decrease of the elastic constant C11, as well as a slight decrease in the sample’s hardness, while the Young’s elastic modulus decrease was more noticeable. An intrinsic bulk property of PEEK is less radiation resistance than at its surface. The proportionality constant of Young’s modulus to indentation hardness for the pristine and irradiated samples were 0.039 and 0.038, respectively. In addition, a quasi-linear relationship between hardness and Young’s modulus was observed. The degradation of the polymer’s mechanical properties was attributed to electron irradiation-induced processes involving scission of macromolecular chains. View Full-Text
Keywords: polyetheretherketone; electron beam irradiation; nanoindentation; roughness; hardness; Young’s modulus; elastic constant polyetheretherketone; electron beam irradiation; nanoindentation; roughness; hardness; Young’s modulus; elastic constant
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MDPI and ACS Style

Almas, N.; Kurbanova, B.; Zhakiyev, N.; Rakhadilov, B.; Sagdoldina, Z.; Andybayeva, G.; Serik, N.; Alsar, Z.; Utegulov, Z.; Insepov, Z. Mechano-Chemical Properties of Electron Beam Irradiated Polyetheretherketone. Polymers 2022, 14, 3067. https://doi.org/10.3390/polym14153067

AMA Style

Almas N, Kurbanova B, Zhakiyev N, Rakhadilov B, Sagdoldina Z, Andybayeva G, Serik N, Alsar Z, Utegulov Z, Insepov Z. Mechano-Chemical Properties of Electron Beam Irradiated Polyetheretherketone. Polymers. 2022; 14(15):3067. https://doi.org/10.3390/polym14153067

Chicago/Turabian Style

Almas, Nurlan, Bayan Kurbanova, Nurkhat Zhakiyev, Baurzhan Rakhadilov, Zhuldyz Sagdoldina, Gaukhar Andybayeva, Nurzhan Serik, Zhanna Alsar, Zhandos Utegulov, and Zinetula Insepov. 2022. "Mechano-Chemical Properties of Electron Beam Irradiated Polyetheretherketone" Polymers 14, no. 15: 3067. https://doi.org/10.3390/polym14153067

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