Interfacial Adhesion Characteristics of Kenaf Fibres Subjected to Different Polymer Matrices and Fibre Treatments
Author(s) -
Umar Nirmal,
Saijod T. W. Lau,
Jamil Hashim
Publication year - 2014
Publication title -
journal of composites
Language(s) - English
Resource type - Journals
eISSN - 2356-7252
pISSN - 2314-5978
DOI - 10.1155/2014/350737
Subject(s) - kenaf , materials science , composite material , sodium hydroxide , epoxy , polyester , polymer , scanning electron microscope , polyurethane , adhesion , fiber , chemical engineering , engineering
This study is aimed at determining the interfacial adhesion strength (IAS) of kenaf fibres using different chemical treatments in hydrochloric (HCl) and sodium hydroxide (NaOH) with different concentrations. Single fibre pullout tests (SFPT) were carried out for both untreated and treated fibres partially embedded into three different polymer matrices; polyester, epoxy, and polyurethane (PU) as reinforcement blocks and tested under dry loading conditions. The study revealed that kenaf fibres treated with 6% NaOH subjected to polyester, epoxy, and PU matrices exhibits excellent IAS while poor in acidic treatment. The effect of SFPT results was mainly attributed to chemical composition of the fibres, types of fibre treatments, and variation in resin viscosities. By scanning electron microscopy examination of the material failure morphology, the fibres experienced brittle and ductile fibre breakage mechanisms after treatment with acidic and alkaline solutions
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