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Mechanical Properties of Blends of Double‐Fullerene End‐Capped Poly(ethylene oxide) and Poly( L ‐lactic acid)
Author(s) -
Kai Weihua,
Zhao Li,
Zhu Bo,
Inoue Yoshio
Publication year - 2006
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200600027
Subject(s) - materials science , composite material , ultimate tensile strength , composite number , crystallization , modulus , dynamic mechanical analysis , amorphous solid , strain (injury) , glass transition , polymer , chemical engineering , chemistry , medicine , organic chemistry , engineering
Summary: The crystallization behavior and mechanical properties of composites of PLLA and FPEOF were studied using DSC, DMA and tensile strength measurements. For PLLA/FPEOF composites aged at room temperature, when PLLA was amorphous, an astonishing around 100 times increase in the fracture strain with a high modulus was observed. For PLLA/FPEOF composites aged at 90 °C, the mechanical performance of the composites was greatly decreased and the fracture strain did not show much of an increase compared with pure PLLA. A mechanism for the large changes in the mechanical properties of PLLA/FPEOF blends aged at different temperatures was proposed.Strain‐stress curves of the PLLA/FPEO20F6 composite aged at 90 °C and room temperature.
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