Abstract
ABSTRACTImprovement of poly(lactic acid)/polyamide 6 (PLA/PA6) miscibility is approached by reactive compatibilization with using different reactive agents. Specifically, compatibilizing efficiency of commercially available Joncryl ADR‐4368 (Joncryl) and free‐radical initiator 2,5‐dimethyl‐2,5‐bis(tert‐butylperoxy)hexane (L101) is compared to that of laboratory synthesized compatibilizers (poly(lactic acid) grafted with itaconic anhydride (PLA‐g‐IAH) and poly(itaconic anhydride) (PIAH) by online rheology monitoring in internal mixer and oscillatory rheometer. The change of morphology and particle‐size distribution is evaluated by scanning electron microscopy (SEM), the extent of PLA‐PA6 miscibility is determined by differential scanning calorimetry (DSC), and newly formed polymer phases are identified by high‐resolution thermogravimetric analysis (HR‐TGA) and solvent extraction in formic acid. Although Joncryl exhibits the most promising results in PLA‐PA6 compatibility, other compatibilizers also exhibit specific benefits for PLA/PA6 blend or individual polymers. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48005.
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