UV/O3 treatment as a surface modification of rice husk towards preparation of novel biocomposites

Nishata Royan Rajendran Royan, Abu Bakar Sulong, Nor Yuliana Yuhana, Ruey Shan Chen, Mohd Hafizuddin Ab Ghani, Sahrim Ahmad

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The use of rice husks (RH) to reinforce polymers in biocomposites are increasing tremendously. However, the incompatibility between the hydrophilic RH fibers and the hydrophobic thermoplastic matrices leads to unsatisfactory biocomposites. Surface modification of the fiber surface was carried out to improve the adhesion between fiber and matrix. In this study, the effect of surface modification of RH via alkali, acid and ultraviolet-ozonolysis (UV/ O3) treatments on the properties of composites recycled high density polyethylene (rHDPE) composites was investigated. The untreated and treated RH were characterized by Fourier Transform Infrared (FTIR) and Scanning Electron Microscope (SEM). The composites containing 30 wt% of RH (treated and untreated) were then prepared via extrusion and followed by compression molding. As compared to untreated RH, all surface treated RH exhibited rougher surface and showed improved adhesion with rHDPE matrix. Tensile strength of UV/ O3-treated RH composites showed an optimum result at 18.37 MPa which improved about 5% in comparison to the composites filled with untreated RH. UV/O3 treatment promotes shorter processing time and lesser raw material waste during treatment process where this is beneficial for commercialization in the future developments of wood plastic composites (WPCs). Therefore, UV/O3 treatment can be served as an alternative new method to modify RH surface in order to improve the adhesion between hydrophilic RH fibre and hydrophobic rHDPE polymer matrix.

Original languageEnglish
Article numbere0197345
JournalPLoS One
Volume13
Issue number5
DOIs
Publication statusPublished - 1 May 2018

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biocomposites
rice hulls
Surface treatment
Composite materials
Polyethylene
composite materials
Adhesion
Fibers
polyethylene
adhesion
Compression molding
Waste treatment
Alkalies
Polymer matrix
Thermoplastics
polymers
Polymers
Extrusion
Oryza
Wood

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

UV/O3 treatment as a surface modification of rice husk towards preparation of novel biocomposites. / Royan, Nishata Royan Rajendran; Sulong, Abu Bakar; Yuhana, Nor Yuliana; Chen, Ruey Shan; Ab Ghani, Mohd Hafizuddin; Ahmad, Sahrim.

In: PLoS One, Vol. 13, No. 5, e0197345, 01.05.2018.

Research output: Contribution to journalArticle

Royan, Nishata Royan Rajendran ; Sulong, Abu Bakar ; Yuhana, Nor Yuliana ; Chen, Ruey Shan ; Ab Ghani, Mohd Hafizuddin ; Ahmad, Sahrim. / UV/O3 treatment as a surface modification of rice husk towards preparation of novel biocomposites. In: PLoS One. 2018 ; Vol. 13, No. 5.
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