The surface morphology of unpretreated fibers
were different to those of pretreated fibers in terms of roughness,
smoothness and cavity.
The surfaces of the unpretreated
fibers were not smooth, spread with nodes and irregular stripes,
which is covered with substances and other impurities. 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.
The surface morphology of unpretreated fiberswere different to those of pretreated fibers in terms of roughness,smoothness and cavity. The surfaces of the unpretreatedfibers were not smooth, spread with nodes and irregular stripes,which is covered with substances and other impurities. A comparisonbetween coconut coir fiber and oil palm fiber showedthat coconut coir fiber has a smoother and more uniform surfacedue to the lower amount of impurities such as ash content.Pretreatment by washing and boiling leaded to morphologicalchanges due to the removal of low molecular weight compounds,resulting in a formation of slightly rough surface andincreasing amount of voids [4,14]. Consequently, the washedand boiled fiber has an increment of surface area, lower densityand greater moisture absorption.
การแปล กรุณารอสักครู่..
