Enhancement of fiber-matrix interface of recycled cotton fibers reinforced epoxy composite for improved mechanical properties


Baccouch W., Ghith A., Yalçın Eniş İ. , Sezgin H. , Miled W., Legrand X., ...More

MATERIALS RESEARCH EXPRESS, vol.7, no.1, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 7 Issue: 1
  • Publication Date: 2020
  • Doi Number: 10.1088/2053-1591/ab6c04
  • Title of Journal : MATERIALS RESEARCH EXPRESS

Abstract

The aim of this study is to enhance the fiber-matrix interface of cotton waste reinforced composite panels by a specific chemical treatment. For this purpose, cotton fibers are treated in sodium hydroxide (NaOH) solution with three different concentrations (0.5 M, 1 M, and 1.5 M) and three different soaking times combinations (1 h, 3 h, and 5 h). Mechanical evaluation of treated and untreated reinforcements and composite panels are characterized using tensile test whereas the chemistries of fiber reinforcements are investigated using Fourier-transform infrared spectroscopy analysis and the fiber-matrix interactions are morphologically examined using scanning electron microscopy. Results indicate a remarkable enhancement in mechanical properties of composites via improving the interfacial adhesion and compatibility between fiber and matrix with a significant increase of Young modulus up to 270% for reinforcements and to 70% for composite materials compared to untreated materials.