Hemp Fibres Modification by sol-gel Method for Polyolefin Composite Filling

In this research hemp fibres have been modified by the sol-gel method in different combinations to implement silica nanolevel coating on fibres surface without compromising the mechanical properties of the fibres and ensure sustainable coverage to achieve matrix-filler compatibility in composite as filler. The coatings of samples prepared using different proportions of nano-sols. The fibres were immersed in the prepared sols made of ethanol, tetraethyl orthosilicate (TEOS), distilled water and hydrofluoric acid. Scanning electron microscopy (SEM) has been used to examine the nature of the surface modification. Energy dispersive X-ray (EDX) analysis was used for chemical composition analysis on coated fibres surface. Analyses based on the SEM show that small sol components proportion differences significantly affect coating adhesion.