Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/109498
Title: Effect of sodium hydroxide treatment on the fracture toughness of luffa natural fiber reinforced epoxy epikote 828
Authors: Dang, Huu Trung
Doan, Thi Yen Oanh
Keywords: Opoxy resin
Fracture toughness
Lufla natural fiber
Socium hydroxide treatment
Issue Date: 2024
Series/Report no.: Vietnam journal of Chemistry;Vol.62, Iss.05 .- P.727-735
Abstract: Microsized luffa natural fibers (MLNFs) were derived from raw luffa natural fibers from Vietnam by undergoing treatment with sodium hydroxide. This study examined the impact of sodium hydroxide concentration, temperature, and treatment duration on the fracture toughness of epoxy resin 828 reinforced with MLNFS. The results showed that the fracture toughness of the composite, as measured by the critical-stress-intensity factor (K) and Izod impact strength, was improved after the treatment of the MLNFs with sodium hydroxide. Specifically, with the optimal sodium hydroxide treatment parameters of 6% NaOH at 70 °C for 6 h, the critical-stressintensity factor increased by 93% (from 2.0 to 3.86 MPa m2) and the Izod impact strength rose by 44.6% (from 3.81 το 5.51 kJ/m²). The thermal properties and surface structure of MLNFs treated with NaOH were analyzed using thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) images.
URI: https://dspace.ctu.edu.vn/jspui/handle/123456789/109498
ISSN: 2525-2321
Appears in Collections:Vietnam Journal of Chemistry

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