Bleaching treatment of kenaf fiber was performed in alkaline medium containing hydrogen peroxide solution maintained at pH 11 and 80 °C for 60 min. The bleached kenaf fiber was analyzed using Fourier Transform Infrared (FTIR) and X-ray Diffraction (XRD) analysis. The bleached kenaf fiber was then compounded with poly-(lactic acid) (PLA) via a melt blending method. The mechanical (tensile, flexural and impact) performance of the product was tested. The fiber treatment improved the mechanical properties of PLA/bleached kenaf fiber composites. Scanning electron micrograph (SEM) morphological analysis showed improvement of the interfacial adhesion between the fiber surface and polymer matrix.
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http://dx.doi.org/10.3390/molecules19032957 | DOI Listing |
BMC Plant Biol
December 2024
Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, 348 West Xianjiahu Road, Changsha, Hunan, China.
Background: In kenaf (Hibiscus cannabinus L.) which is an important natural fiber crop, the first flower node is closely linked to fiber yield. However, the genetic mechanisms controlling the first flower node remain poorly understood.
View Article and Find Full Text PDFJ Biomater Sci Polym Ed
December 2024
Department of Mechanical Engineering, Gebze Technical University, Gebze, Kocaeli, Turkey.
Natural fibers such as kenaf, sisal, ramie, jute, hemp, flax, coir, banana and bamboo have been employed in the production of biocomposites. A great strength-to-weight ratio, renewability and sustainability are some important properties of natural fibers. Biocomposites produced from natural fibers are employed in biomedical fields such as delivery of drug, orthopaedic applications, tissue engineering and wound dressing owing to their acceptability by the human body, moderate mechanical performance and environmental benefits.
View Article and Find Full Text PDFFood Chem
March 2025
Instituto Politécnico Nacional (IPN), Centro de Desarrollo de Productos Bióticos (CEPROBI), Yautepec, Morelos 62731, Mexico. Electronic address:
Decoction residues (DR) of Roselle are a waste with high polyphenol content. The remaining polyphenols are resistant to thermal treatments and have antioxidant properties. An alternative for the use of the DR is the extrusion with wall material that can preserve the antioxidant capacity of the polyphenols.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Advanced Engineering Materials and Composites Research Centre, Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia, UPM Serdang, 43400, Selangor, Malaysia; Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, UPM Serdang, 43400, Selangor, Malaysia.
Environmental issues have resulted in the forming of sustainable materials, including natural fiber-reinforced PLA composites; nonetheless, this composite has low water resistance, resulting in poor composite performance. This research aims to investigate the impact of adding a small amount of graphene nanoplatelets (GNP) on the water absorption (WA) characteristic of bamboo/kenaf-reinforced PLA hybrid composites. The physical behavior and water resistance of the composites, as well as the mechanical performance and surface after 14 days of immersion, were comprehensively investigated.
View Article and Find Full Text PDFSci Rep
December 2024
School of Mechanical Engineering, Vellore Institute of technology, Vellore, 632014, India.
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