Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/898
Title: Chemical modification of apricot kernel shell waste and its effect on phenolic novolac epoxy composites
Authors: Kocaman, Süheyla
Keywords: Composites
Mechanical Properties
Resins
Thermal Properties
Thermosets
Fiber-Reinforced Composites
Natural Fiber
Mechanical-Properties
Green Composites
Nanofibers
Tensile
Powder
Carbon
Coir
Issue Date: 2020
Publisher: WILEY
Abstract: Apricot kernel is one of the most abundant types of agro-waste in the eastern Anatolia regions of Turkey. In this study, apricot kernel shells (AKShs) were chemically modified using levulinic acid (LA) for the first time, and their potential for developing biobased composites was evaluated. Phenol novolac epoxy resin was used as matrix owing to its high thermal and superior adhesion properties. Shell treatments to improve interfacial bonding were carried out using alkali, acetic acid, and LA. These treatments were aimed at improving the mechanical properties, wettability, and bonding of the composites. Moreover, these treatments could prevent the deterioration of the fiber/matrix interface (hydrophilic and hydrophobic effect) and mitigate damage to the fiber during production, which is one of the main reasons for the reduced strength of the composites. The thermal characteristics, crystallinity index, chemical composition, and surface morphology of the untreated and chemically modified AKShs and composites were studied by thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy, respectively. In addition, the composites were analyzed in detail using mechanical tests and contact angle measurements. The chemical treatment using LA resulted in composites with superior mechanical behavior.
URI: https://doi.org/10.1002/app.49267
https://hdl.handle.net/20.500.13091/898
ISSN: 0021-8995
1097-4628
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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