Abstract
Abstract In this work, a poly( l -lactide) (PLLA)/poly(ethylene glycol)-polyhedral oligomeric silsesquioxanes (PEG-POSS) nanocomposite was first prepared; moreover, the nonisothermal crystallization behavior, thermal stability, and mechanical properties of the nanocomposite were extensively studied and compared with those of neat PLLA. PEG-POSS was miscible with PLLA, as proved by a single glass transition temperature. As PEG-POSS increased the chain mobility of PLLA as a plasticizer, the nonisothermal cold and melt crystallization behaviors of PLLA were enhanced by PEG-POSS in the nanocomposite; furthermore, the thermal stability of PLLA was not obviously affected by PEG-POSS. In addition, PEG-POSS increased the ductility of PLLA as an efficient plasticizer and still maintained high Young's modulus.
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