Mechanical and Thermal Characterization of Alkali Treated Kenaf Fibers

International Conference on Aerospace and Mechanical Engineering 2017

航空航天工程;机械制造

Abdullah, S.A.S.^1 ; Zuhudi, N.Z.M.^1 ; Anuar, N.I.S.^2 ; Isa, M.D.^1

Universiti Kuala Lumpur, Malaysian Institute of Aviation Technology, Dengkil, Selangor

43800, Malaysia^1

Malaysian Timber Industry Board, Cheras, Kuala Lumpur

56100, Malaysia^2

关键词: Alkali treatment;    Bio-composites;    Cellulose structures;    Crystallinities;    Immersion time;    Thermal behaviours;    Thermal characterization;    Thermo-gravimetric;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/370/1/012048/pdf
DOI  :  10.1088/1757-899X/370/1/012048

学科分类：航空航天科学

来源: IOP

【 摘 要 】

Research on bio composite for automotive and aerospace application has been extensive with the advancement of natural fiber yarn and woven technology. Malaysia has marked kenaf as its main crop commodity by 2020. Surface modification of natural fibers is one of the significant areas in current biocomposite research. Alkali treatment removes certain amount of lignin, hemicellulose, and wax on the surface of fiber, besides depolymerizing cellulose structure and increasing percentage of crystallinity. Surface modification with NaOH of 3%, 6% and 9% concentration with various lengths of immersion time was conducted. The effect of alkali treatment on the mechanical strength and thermal degradation of kenaf fibre were investigated by means of fiber bundle tensile test and thermogravimetric analyser (TGA). Alkali treatment strongly modifies the thermal behaviour of the fibers, being particularly effective in the removal of noncellulosic matter. In addition, the mechanical properties of kenaf fibers revealed higher tensile strength for NaOH treated fibers.