Colloid and Polymer Science

, Volume 292, Issue 11, pp 2949–2957 | Cite as

Enhanced mechanical and thermal properties of poly(l-lactide) nanocomposites assisted by polydopamine-coated multiwalled carbon nanotubes

  • Hongfang Wang
  • Cong Wu
  • Xu Liu
  • Jing Sun
  • Guangmei Xia
  • Wei Huang
  • Rui Song
Original Contribution
First Online:
Received:
Revised:
Accepted:

Abstract

Herein, a facile and noncovalent modification for multiwalled carbon nanotubes (MWNTs) is adopted by the self-polymerization of dopamine (DOPA). And, the polydopamine-coated MWNTs (D-MWNTs) were further incorporated into poly(l-lactide) (PLLA) matrix through the solvent-casting method. It is found that the D-MWNTs tend to be well dispersed in PLLA matrix than the pristine MWNTs and the D-MWNTs that can act as heterogeneous nucleators that evidently affect the morphology and crystallization behavior of PLLA. In addition, the significant improvement of dispersion and the interface interaction of PLLA/D-MWNTs, via dopamine coating between the MWNTs and PLLA matrix, results in enhanced mechanical and thermal properties and electrical conductivity. This facile methodology is believed to afford broad application potential in carbon nanotubes (CNTs)-based polymer nanocomposites.

Keywords

Poly(l-lactic acid) Polydopamine MWNT nanocomposites Mechanical and thermal properties 
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Notes

Acknowledgments

This work was supported by the National Science Foundation of China (21072221, 21172252). Supports from Dr. Shen Yan, National Center for Nanoscience and Technology (100190, Beijing, China) for electrical conductivity test are also appreciated.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Hongfang Wang
    • 1
  • Cong Wu
    • 1
  • Xu Liu
    • 1
  • Jing Sun
    • 2
  • Guangmei Xia
    • 3
  • Wei Huang
    • 4
  • Rui Song
    • 1
  1. 1.College of Chemistry and Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingChina
  2. 2.Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghaiChina
  3. 3.CAS Key Laboratory of Engineering Plastics, Institute of ChemistryChinese Academy of Sciences, Beijing National Laboratory for Molecular SciencesBeijingChina
  4. 4.Laboratory of Advanced Polymer Materials, Institute of ChemistryChinese Academy of SciencesBeijingChina

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