Carbon nanotubes(CNTs)was used to modify the structure and properties of poly(lactic acid)(PLA)/poly(butyleneadipate-co-terephthalate)(PBAT)blends.The effects of CNTs content on the crystallization behavior,phase morphology,thermal properties and mechanical properties of the PLA/PBAT blends were studied.The reason for the selective localization of CNTs was analyzed carefully based on wetting theory.And the mechanism of CNTs toughening PLA/PBAT blends was investigated.The results show that the selective localization of CNTs in PABT enlarges the size of PBAT particles,indicating that CNTs are not a real compatibilizer of PLA/PBAT blends.The addition of CNTs slightly reduces the tensile strength but greatly increases the elongation at break.When the mass fractioin of CNTs is 1％,the elongation at break of PLA/PBAT/CNTs samples reaches the maximum,which is 258.6％higher than that of PLA/PBAT.
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