Accelerated Weathering and Water Absorption Behavior of Kenaf Fiber Reinforced Acrylic Based Polyester Composites
Non-woven kenaf fiber (KF) mat reinforced acrylic-based polyester resin composites were prepared by an impregnation process followed by compression molding. They were exposed to durability test of accelerated weathering and water absorption. Accelerated weathering test through UV irradiation caused...
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doaj-11272d39ac2d44eab7ecf685b0ab3a622020-11-24T20:57:45ZengFrontiers Media S.A.Frontiers in Materials2296-80162020-02-01710.3389/fmats.2020.00026506711Accelerated Weathering and Water Absorption Behavior of Kenaf Fiber Reinforced Acrylic Based Polyester CompositesMuhamad Saifuddin Salim0Dody Ariawan1Mohd Fadli Ahmad Rasyid2Razaina Mat Taib3Mohd Zharif Ahmad Thirmizir4Zainal Arifin Mohd Ishak5Zainal Arifin Mohd Ishak6School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, MalaysiaMechanical Engineering Department, Engineering Faculty, Universitas Sebelas Maret, Surakarta, IndonesiaSchool of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, MalaysiaSchool of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, MalaysiaCluster for Polymer Composites, Science and Engineering Research Center, Universiti Sains Malaysia, Nibong Tebal, MalaysiaSchool of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal, MalaysiaCluster for Polymer Composites, Science and Engineering Research Center, Universiti Sains Malaysia, Nibong Tebal, MalaysiaNon-woven kenaf fiber (KF) mat reinforced acrylic-based polyester resin composites were prepared by an impregnation process followed by compression molding. They were exposed to durability test of accelerated weathering and water absorption. Accelerated weathering test through UV irradiation caused modification in chemical, mechanical, surface appearance, and color change of the composites. Two competing reactions occurred throughout the exposure period, i.e., post-crosslinking and photo-oxidation process. FTIR analysis revealed that the former occurred at the early stage of exposure while the latter toward the end of the exposure, exhibited by an accentuated increase in carbonyl and vinyl index. The post-crosslinking process contributes to the improvement in flexural properties and thermal stability of the composites, whereas the oxidation process does not. SEM observation showed that the degradation by photo-oxidation resulted in the formation of voids and blisters on composite's sample. Water uptake of all composites was found to follow Fickian behavior. Good recoveries (exceeding 79%) of flexural properties were obtained upon re-drying. However, a significant reduction in flexural strength and modulus was obtained in the wet state condition. SEM observation revealed that full recovery was not possible because of the impairment of the—matrix interfacial region. Relatively higher flexural properties were exhibited by alkali-treated KF composites even after the durability test due to the improved strength and—matrix adhesion following the treatment.https://www.frontiersin.org/article/10.3389/fmats.2020.00026/fullnatural fiber reinforced compositesaccelerated weathering degradationwater absorptionkenaf fiber matAcrodur resins |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Muhamad Saifuddin Salim Dody Ariawan Mohd Fadli Ahmad Rasyid Razaina Mat Taib Mohd Zharif Ahmad Thirmizir Zainal Arifin Mohd Ishak Zainal Arifin Mohd Ishak |
spellingShingle |
Muhamad Saifuddin Salim Dody Ariawan Mohd Fadli Ahmad Rasyid Razaina Mat Taib Mohd Zharif Ahmad Thirmizir Zainal Arifin Mohd Ishak Zainal Arifin Mohd Ishak Accelerated Weathering and Water Absorption Behavior of Kenaf Fiber Reinforced Acrylic Based Polyester Composites Frontiers in Materials natural fiber reinforced composites accelerated weathering degradation water absorption kenaf fiber mat Acrodur resins |
author_facet |
Muhamad Saifuddin Salim Dody Ariawan Mohd Fadli Ahmad Rasyid Razaina Mat Taib Mohd Zharif Ahmad Thirmizir Zainal Arifin Mohd Ishak Zainal Arifin Mohd Ishak |
author_sort |
Muhamad Saifuddin Salim |
title |
Accelerated Weathering and Water Absorption Behavior of Kenaf Fiber Reinforced Acrylic Based Polyester Composites |
title_short |
Accelerated Weathering and Water Absorption Behavior of Kenaf Fiber Reinforced Acrylic Based Polyester Composites |
title_full |
Accelerated Weathering and Water Absorption Behavior of Kenaf Fiber Reinforced Acrylic Based Polyester Composites |
title_fullStr |
Accelerated Weathering and Water Absorption Behavior of Kenaf Fiber Reinforced Acrylic Based Polyester Composites |
title_full_unstemmed |
Accelerated Weathering and Water Absorption Behavior of Kenaf Fiber Reinforced Acrylic Based Polyester Composites |
title_sort |
accelerated weathering and water absorption behavior of kenaf fiber reinforced acrylic based polyester composites |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Materials |
issn |
2296-8016 |
publishDate |
2020-02-01 |
description |
Non-woven kenaf fiber (KF) mat reinforced acrylic-based polyester resin composites were prepared by an impregnation process followed by compression molding. They were exposed to durability test of accelerated weathering and water absorption. Accelerated weathering test through UV irradiation caused modification in chemical, mechanical, surface appearance, and color change of the composites. Two competing reactions occurred throughout the exposure period, i.e., post-crosslinking and photo-oxidation process. FTIR analysis revealed that the former occurred at the early stage of exposure while the latter toward the end of the exposure, exhibited by an accentuated increase in carbonyl and vinyl index. The post-crosslinking process contributes to the improvement in flexural properties and thermal stability of the composites, whereas the oxidation process does not. SEM observation showed that the degradation by photo-oxidation resulted in the formation of voids and blisters on composite's sample. Water uptake of all composites was found to follow Fickian behavior. Good recoveries (exceeding 79%) of flexural properties were obtained upon re-drying. However, a significant reduction in flexural strength and modulus was obtained in the wet state condition. SEM observation revealed that full recovery was not possible because of the impairment of the—matrix interfacial region. Relatively higher flexural properties were exhibited by alkali-treated KF composites even after the durability test due to the improved strength and—matrix adhesion following the treatment. |
topic |
natural fiber reinforced composites accelerated weathering degradation water absorption kenaf fiber mat Acrodur resins |
url |
https://www.frontiersin.org/article/10.3389/fmats.2020.00026/full |
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