Polylactic acid (PLA)‐talc composites were reactively compatibilized using maleic anhydride‐functionalized PLA (MAPLA) as an interfacial additive. The effect of MAPLA was investigated based on evaluation of composite properties and examination of the microstructure using scanning electron microscopy. The incorporation of MAPLA contributed to an increase in the crystallinity of PLA in the composites, and when added in an optimal concentration, showed improved tensile strength. Thermo–mechanical measurements indicated the reinforcement effect of the talc and the coupling effect of the MAPLA inclusion. Microscopic studies revealed the composite microstructures along with the corresponding modes of failure which were in accordance with the mechanical behavior. Overall, this investigation provided experimental evidence of enhanced adhesion at the interface, which is believed to be due to the MAPLA addition.
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Fowlks et al. (2010) studied this question.
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