Recent Progress on Polylactic Acid Biodegradable Materials Reinforced and Toughened by Inorganic Fillers
Polylactic Acid(PLA)-based biodegradable materials have attracted extensive attention of the scientists and industry due to their ex-cellent mechanical properties,environmental friendliness and easy recycling.However,PLA which has inherent brittleness needs to be modified in the practical application to improve its performance and reduce its cost.Inorganic fillers which have the advantage of wide sources,degrad-ability and heat resistance can be widely utilized in the modification of PLA-based biodegradable materials.Based on the types and characteris-tics of inorganic fillers,the research progress of commonly used inorganic fillers such as talcum powder(Talc),calcium carbonate(CaCO3),montmorillonite(MMT),silicon dioxide(SiO2)and other inorganic fillers was summarized in this paper,and the modification methods and mechanism were also summarized.Meanwhile,the existing problems of inorganic fillers modification were analyzed,and the future research di-rections were also prospected in this paper.
Inorganic fillerPLABiodegradable materialStrengthening and toughening modification
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