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Colloid and Polymer Science

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27-12-2023 | Research

Mechanical behavior of polyamide-6 after combined photo-oxidative and hygrothermal aging

Authors: K. N. Cundiff, A. K. Rodriguez, A. A. Benzerga

Published in: Colloid and Polymer Science | Issue 4/2024

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Abstract

The effect of moisture on the photo-oxidative degradation of polyamide-6 (PA-6) was studied by analyzing the mechanical response after two different accelerated aging procedures. In the first aging procedure, the PA-6 was only exposed to ultra-violet (UV) radiation at 60 \(^\circ\)C. In the second procedure, the same duration of UV radiation was periodically interrupted while the relative humidity was raised to 100%. Diffusion-limited and nominally homogeneous degradation conditions were investigated using bulk and film specimens, respectively. Accelerated UV aging reduced the ductility of PA-6, but the additional hygrothermal exposure had no effect on the ductility or strength, indicating that humidity did not influence the photo-oxidation of PA-6. This finding contrasts with previous studies that found thermo-oxidation of PA-6 was accelerated by moisture.

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Title: Mechanical behavior of polyamide-6 after combined photo-oxidative and hygrothermal aging
Authors: K. N. Cundiff
A. K. Rodriguez
A. A. Benzerga
Publication date: 27-12-2023
Publisher: Springer Berlin Heidelberg
Published in: Colloid and Polymer Science / Issue 4/2024
Print ISSN: 0303-402X
Electronic ISSN: 1435-1536
DOI: https://doi.org/10.1007/s00396-023-05218-7

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