Effect of Hydrothermal Ageing on Interlaminar Shear Strength of Recycled PLA-Based Glass Fiber Reinforced Composites

Harun Yaka; İbrahim Aslan

Effect of Hydrothermal Ageing on Interlaminar Shear Strength of Recycled PLA-Based Glass Fiber Reinforced Composites

Abstract

In the industrialized world, polymer use is increasing daily, but due to raw material depletion and environmental pollution, polymer recycling is gaining importance. Currently, PLA (polylactic acid) is recognized as one of the leading polymers in terms of application frequency. In this study, glass fiber-reinforced polymer (GFRP) composite sheets were produced using recycled PLA produced through additive manufacturing as matrix material. The composite materials were hot-molded and pressed under a force of 100 kN at 215°C and allowed to cool at room temperature. The composite sheets produced were subjected to accelerated aging for various periods. The Short Beam Shear (SBS) tests were then conducted to determine the Interlaminar Shear Strength (ILSS) of the composite materials, and post-test surface morphologies were examined. The results show that aging reduced the ILSS of the sample by up to 54.9%. Furthermore, after 36 h of aging, the ILSS of the sample subjected to the wet SBS test decreased by up to 27.5% compared to the dry sample. In general, it was observed that the aging process and duration affected the ILSS of the sample.

Keywords

Composite , Glass fiber , Hydrothermal Ageing , ILSS , Recycling PLA

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Details

Primary Language

English

Subjects

Material Design and Behaviors

Journal Section

Research Article

Authors

Harun Yaka ^*
0000-0003-4859-9609
Türkiye

İbrahim Aslan
0000-0002-9157-9286
Türkiye

Publication Date

December 31, 2025

Submission Date

August 19, 2025

Acceptance Date

September 16, 2025

Published in Issue

Year 2025 Volume: 11 Number: 3

IZ

https://izlik.org/JA68JG55UY

IEEE

[1]H. Yaka and İ. Aslan, “Effect of Hydrothermal Ageing on Interlaminar Shear Strength of Recycled PLA-Based Glass Fiber Reinforced Composites”, GJES, vol. 11, no. 3, pp. 345–354, Dec. 2025, [Online]. Available: https://izlik.org/JA68JG55UY

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