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The objective of this research was to determine the optimum solvent mixture ratio to improve flexibility while maintaining the thermal expansion stability of PLA film. PLA films were produced from mixed solvent solutions of (M: methylene chloride) and (A: acetonitrile) and 10% plasticizer using the solvent-casting technique. The ratio of solvents used were 70% methylene chloride with 30% acetonitrile...
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