Summary: | Polymer blending has been widely used to fabricate polymeric films in the last decade due to its superior properties to a single component. In this study, an aluminum phosphate-coated halloysite nanotube (HNTs@AlPO<sub>4</sub>) was fabricated using a one-pot heterogeneous precipitation method, organically modified HNTs@AlPO<sub>4</sub> (o-HNTs@AlPO<sub>4</sub>) was used to improve the performance of polyethylene oxide/poly(butylene adipate-co-terephthalate) (PEO/PBAT) blends, and the mechanical and rheological properties of the PEO/PBAT/o-HNTs@AlPO<sub>4</sub> films were systematically discussed. According to our results, there is an optimal addition for adequate AlPO<sub>4</sub> nanoparticle dispersion and coating on the surface of HNTs, and organic modification could improve the interfacial compatibility of HNTs@AlPO<sub>4</sub> and the polymeric matrix. Moreover, o-HNTs@AlPO<sub>4</sub> may serve as a compatibilizer between PEO and PBAT, and PEO/PBAT/o-HNTs@AlPO<sub>4</sub> films have better mechanical and rheological properties than the PEO/PBAT blends without the o-HNTs@AlPO<sub>4</sub> component.
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