Abstract
In this article, lacquer seed shell fiber-reinforced poly(lactic acid) (PLA) composites were prepared by transfer compression molding. The lacquer seed shell fiber was treated by NaOH and silane. The effect of surface treatment on the properties of the composites was studied by orthogonal experiment. It was found that the concentration of NaOH significantly affected the impact strength of the composites. The highest impact strength (6.94 kJ/m2, which is 300% higher than that of the untreated fiber-reinforced poly(lactic acid) composite) was found in the composite treated by NaOH following silane treatment. The results of thermogravimetric analysis indicated that the thermal stability of fiber-reinforced poly(lactic acid) composites were better than that of neat poly(lactic acid). Moreover, the morphology of fracture surface evaluated by scanning electron microscopy indicated that surface treatment can make better adhesion between the fiber and the matrix.
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