Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 46, Issue 1, Pages 79-90Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998311410486
Keywords
Pineapple leaf fibers; chemical modification; acrylonitrile monomer; graft copolymerization; tensile strength
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Funding
- Alexander von Humboldt Foundation in Germany
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Raw pineapple leaf fibers (PALFs) were chemically modified by scouring, NaOH treatment, and bleaching (NaClO(2)). The graft copolymerization of synthetic acrylonitrile monomer onto bleached PALFs was carried out in aqueous medium using potassium persulfate (K(2)S(2)O(8)/FeSO(4)) as a redox initiator. The maximum grafting level at optimum conditions, namely, monomer concentration, initiator concentration, catalyst concentration, reaction time, and temperature have been determined. The main objective of this study is to decrease the amorphous region of lignocellulose in PALFs and improve its hydrophobic nature by incorporation of synthetic polymer of polyacrylonitrile and mechanical properties. The modified and grafted fibers were characterized by Fourier transform infrared spectroscopy, scanning electron microscope, thermogravimetric analysis, and X-ray diffraction study techniques. The moisture content and tensile strength properties were also evaluated for their environmental and mechanical performances.
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