A comparison
between coconut coir fiber and oil palm fiber showed
that coconut coir fiber has a smoother and more uniform surface
due to the lower amount of impurities such as ash content.
Pretreatment by washing and boiling leaded to morphological
changes due to the removal of low molecular weight compounds,
resulting in a formation of slightly rough surface and
increasing amount of voids [4,14]. Consequently, the washed
and boiled fiber has an increment of surface area, lower density
and greater moisture absorption.