Surface Treatment of Polylactic Acid Fiber by Starch Nanocrystals and Interface Modification of Polylactic Acid Fiber-Reinforced Starch Composites

The surface of polylactic acid fiber (PLAF) was treated with self - manufactured starch nanocrystals (SNCs) to improve its interfacial adhesion the matrix. Determination optimum dispersion conditions SNCs by transmittance. effects direct oscillatory deposition, chemical grafting modification, and concentration on treatment effect PLAF bonding matrix were investigated. results showed that successfully introduced into surface, moreover, modifying grafted better than distribution particles more uniform strong make up for damage fibers caused aminolysis. At 10 g/L, tensile strength could be maintained at 582 MPa, a large amount evenly attached after pulling out. It interface bond matrix, highest IFSS value 2.57 MPa increase about 63 %. Therefore, introduction modification is great significance deserves further exploration.