Preparation and Properties of Hydrolysis Resistant PLA/PBS/Talc Powder Composites
Polylactic acid(PLA)/polybutylene succinate(PBS)/talc powder composites with different mass fractions of bis(2,6-diisopropylphenyl)carbodiimide(Carbo D)were prepared.The hydrolytic stability of PLA/PBS/talc powder composites was studied through mechanical properties test,terminal carboxyl titration test,Fourier infrared spectroscopy,differential scanning calorimetry and hydrolytic aging test.The results show that the addition of Carbo D can significantly improve the hydrolysis resistance of PLA/PBS/talc powder composites.When the mass fraction of Carbo D is 1.0％,the composite material has the best comprehensive performance,with a tensile strength of 45.68 MPa and an impact strength of 5.54 kJ/m2.At 85℃and 85％ humidity conditions,the tensile strength still reached 31.62 MPa after 48 h hydrolysis aging,which only decreased by 30.78％.
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