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. 2014 Mar 7;19(3):2957-68.
doi: 10.3390/molecules19032957.

The influence of chemical surface modification of kenaf fiber using hydrogen peroxide on the mechanical properties of biodegradable kenaf fiber/poly(lactic acid) composites

Nur Inani Abdul Razak  1 , Nor Azowa Ibrahim  2 , Norhazlin Zainuddin  3 , Marwah Rayung  4 , Wan Zuhainis Saad  5
Affiliations

The influence of chemical surface modification of kenaf fiber using hydrogen peroxide on the mechanical properties of biodegradable kenaf fiber/poly(lactic acid) composites

Nur Inani Abdul Razak et al. Molecules. .

Abstract

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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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Image of bleached (left) and unbleached (right) kenaf fiber/PLA composite.
Figure 2
Figure 2
FTIR spectra of bleached and unbleached kenaf fiber.
Figure 3
Figure 3
XRD patterns of unbleached and bleached fiber.
Figure 4
Figure 4
Tensile strength of pure PLA, UBC and BC composites.
Figure 5
Figure 5
Tensile modulus of pure PLA, UBC and BC composites.
Figure 6
Figure 6
Elongation at break of pure PLA, UBC and BC composites.
Figure 7
Figure 7
Flexural strength of pure PLA, UBC and BC composites.
Figure 8
Figure 8
Flexural modulus of pure PLA, UBC and BC composites.
Figure 9
Figure 9
Impact strength of pure PLA, UBC and BC composites.
Figure 10
Figure 10
SEM images of (a) untreated fiber, (b) treated fiber (c) UBC composite (d) BC composite.
See this image and copyright information in PMC

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