writer：Comparative study of surface modification for ramie reinforced poly(lactic acid) composites
keywords：surface modification， ramie
source：会议
specific source：The 9th Asian-Australasian Conference on Composite Materials (ACCM-9)
Issue time：2014年

With the growing environmental awareness and shortage of natural resource, biodegradable and compostable materials are produced and used in increasing amounts in the areas of life and industry. The composites made by natural fibers and poly(lactic acid) (PLA) have been used for making automotive parts and building components etc. However, the poor interfacial adhesion between natural fibers and the PLA matrix limits their widely utilization.

In this study, the composites with ramie as the reinforcement and PLA as the matrix were prepared by twin-screw extruder. Alkali, isocynate, silane and maleic anhydride (MA) were used to modify ramie fiber, and the influence of surface modification on the properties of  ramie fiber reinforced PLA composites was studied. The tensile properties, flexural properties and impact properties were investigated and the morphology of fracture surface of  the composites evaluated by scanning electronic microscopy (SEM). Through the comparison of the performances of the composites with different surface modification,  the optimal surface modification for ramie/PLA composites was concluded.