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Crystallization Kinetics and Mechanical Properties of Poly(lactic acid)/Carbon Nanofiber Composites
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  • Journal title : Textile Science and Engineering
  • Volume 53, Issue 1,  2016, pp.55-61
  • Publisher : The Korean Fiber Society
  • DOI : 10.12772/TSE.2016.53.055
 Title & Authors
Crystallization Kinetics and Mechanical Properties of Poly(lactic acid)/Carbon Nanofiber Composites
Park, Ji Hyun; Lee, Sang Cheol;
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 Abstract
Poly(lactic acid) (PLA)/carbon nanofiber (CNF) composites with different CNF contents (0.5 wt% and 1 wt%) were prepared by solution blending. Isothermal crystallization of the PLA/CNF composites and the pristine PLA was investigated by differential scanning calorimetry and analyzed based on the Avrami equation. The crystallization half-times of the PLA/CNF composites were smaller than that of pristine PLA, indicating that the CNF embedded in the PLA matrix enhanced the PLA crystallization rate. Avrami exponents of the PLA/CNF composites were within the range 2.3-3.0, suggesting that a mixture of two- and three-dimensional crystals was formed by heterogeneous nucleation. Polarized optical microscopy images showed that the crystalline morphology of the PLA/CNF composites looked like small grains. Tensile tests indicated that the tensile modulus and strength of the PLA/CNF composites were higher than those of pristine PLA.
 Keywords
poly(lactic acid);carbon nanofiber;isothermal crystallization;tensile modulus and strength;
 Language
Korean
 Cited by
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