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ABSTRACT
This work focus on improving the heat resistant and mechanical properties of poly(lactic acid)/poly(butylene succinate) (PLA/PBS) blends using appropriate contents of polyaryl polymethylene isocyanate (PAPI). Some crosslinked structures were formed according to the gel fraction and rheological results, and the crosslinked structures played the role of nucleation site for the blends. And the Vicat softening temperature of the blends gradually increased with increasing PAPI content. Moreover, the addition of PAPI in the PLA/PBS blends produced a few PLA-PBS copolymers which acted as a compatibilizer and enhanced the interfacial adhesion. Thus, the mechanical properties of PLA were significantly improved.
GRAPHICAL ABSTRACT
Additional information
Funding
This work was supported by the fund of Science and Technology Bureau of Jilin Province of China (No. 20170204012SF), Chinese Science Academy (Changchun Branch) (No. 2017SYHZ0018 and No. 2017SYHZ0016), and National Key Research and Development Program of China (N0. 2016YFC0501402).