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We studied the use of Bio-plastics (plastics made from plants) such as poly(lactic acid) (PLA) to automotive parts. To apply this material to automotive plastic parts, improvement in heat and impact performance is required. From the viewpoint of suppressing the increase in CO2 emissions, we attempted to improve the performance of PLA by combining with natural fiber. As the result, we could improve both heat and impact performance. In addition, we could achieve higher modulus and lower bulk density, which leads to the weight reduction of automotive parts.

We studied the application of Bio-plastics (plastics made from plants) such as poly(lactic acid) (PLA) to automotive parts. To apply this material to automotive plastic parts, major improvement is required for thermal and impact performance. From the viewpoint of suppressing the increase CO2 emissions, we attempt to improve the performance of PLA by combining with natural fiber. As the result, we could improve both thermal and impact performance. In addition, we could achieve higher modulus and lower bulk density, which lead to the weight reduction of automotive parts.

We studied the adoption of plastics derived from plants (bioplastics) such as poly(lactic acid) (PLA) for automotive parts in order to contribute to suppressing the increase in CO, emissions. For this application. major improvements of heat and impact resistance are needed. As a method to improve heat resistance, we developed PLA combined with clay of high heat resistance. As a result. we succeeded in synthesizing a PLA-clay nanocomposite using 18(OH)2-Mont. In-mold crystallization of PLA-clay nanocomposite lead to the great suppression of storage modulus decrease at high temperature. which in turn improved the heat resistance of PLA.