To improve the toughness of the PLA/corn stalk composite,the introduction of polypropylene carbonate(PPC)was used.The PLA/PPC/corn stalk(PLA/PPC/CS)composite was prepared using a combination of melt extrusion and hot pressing.A single factor experiment was designed with hot pressing time,hot pressing pressure,and hot pressing temperature as variables,and the impact,bending,and tensile properties of the PLA/PPC/CS composite as evaluation indicators.The results showed that the hot pressing time,hot pressing pressure,and hot pressing temperature had significant effects on the mechanical properties of PLA/PPC/CS composites.The final optimized hot pressing process is:hot pressing time is 10 min,hot pressing pressure is 7.5 MPa,and hot pressing temperature is 190 ℃.
维普
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