Kigelia africana fruit biofibre polysaccharide extraction and biofibre development by silane chemical treatment

Int J Biol Macromol. 2022 Jun 1;209(Pt A):1248-1259. doi: 10.1016/j.ijbiomac.2022.04.137. Epub 2022 Apr 21.

Abstract

Silane-treated natural cellulosic Kigelia africana fruit fibre (KAF) was experimentally established to have strong strength after removing hydrophilic materials. Silane treatment makes it compatible with hydrophobic biopolymeric materials than existing non-grafted KA fibre. In this work, the polysaccharide was extracted from the KAF and found to have all the essential compounds. KA fruit-based cellulosic fibre was extracted and treated with different concentrations of silane solution. Silane-treated (13%) KAF has a cellulose content of about 76.86%. The peak found at 1734 cm-1 shows the hemicellulose in untreated fibres, and its intensity decreased after silane treatment, as confirmed by FTIR. X-ray diffraction investigation indicated that silane-treated (5%) KAF has a crystallinity index of 70.22%. After treatment, the tensile strength of 5% silane-treated KAF shows a tensile strength of 490.77 MPa, giving more viability to biofibre reinforcement.

Keywords: Biocomposite; Kigelia africana bio fibre; Lignocellulosic fibre; Silane chemical treatment.

MeSH terms

  • Cellulose / chemistry
  • Fruit* / chemistry
  • Polysaccharides / chemistry
  • Silanes* / chemistry
  • Tensile Strength

Substances

  • Polysaccharides
  • Silanes
  • Cellulose