To reduce the hydrophilicity of synthetic fibers without affecting their mechanical properties, employ methods such as chemical surface modification, hydrophobic coatings, cross-linking, blending with hydrophobic polymers, surface roughening, adding hydrophobic additives, heat treatment, and chemical treatments with hydrophobic agents. These approaches effectively reduce hydrophilicity in fibers like Kevlar 49 and e-glass.

Dear Maghchiche which of these methods affect the bonding between fibers and polymers within a composite? For example, UDMA, BISGMA.