Ultrasonic evaluation of ageing kinetics in amorphous polymer

Yambangyang, P., Wilson, R. , Reboud, J. , Cooper, J. M. and Demcenko, A. (2022) Ultrasonic evaluation of ageing kinetics in amorphous polymer. Applied Physics Letters, 121, 072202. (doi: 10.1063/5.0102398)

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The physical aging of amorphous polymers induces changes in material properties, which are challenging to detect in situ in industrial settings. Here, we present a nondestructive nonlinear ultrasonic evaluation technique that enables localized measurements of the combined effects of temperature and time in amorphous polymers, without needing to remove materials. The proposed technique is demonstrated using commercial grade poly(vinyl chloride) samples and is supported by analysis of wave–material interactions. The results show that the physical aging of the polymer is described by the Arrhenius equation with an effective activation energy of 103 kJ/mol over the analyzed temperature range.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Demcenko, Dr Andriejus and Wilson, Dr Robert and Yambangyang, Pracha and Cooper, Professor Jonathan and Reboud, Professor Julien
Authors: Yambangyang, P., Wilson, R., Reboud, J., Cooper, J. M., and Demcenko, A.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN (Online):1077-3118
Published Online:17 August 2022
Copyright Holders:Copyright © 2022 Author(s)
First Published:First published in Applied Physics Letters 121: 072202
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.5525/gla.researchdata.1332

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
169832Bio-PHONONICS: Advanced Microfluidics & Diagnostics using Acoustic Holograms �` Bio-PhononicsJonathan CooperEuropean Research Council (ERC)340117ENG - Biomedical Engineering