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Dispersions of carbon nanotubes/polyhedral oligomeric silsesquioxanes hybrids in polymer: the mechanical, electrical and EMI shielding properties

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Abstract

A hybrid was synthesized by grafting polyhedral oligomeric silsesquioxane (POSS) to multiwalled carbon nanotubes (MWCNTs). The MWCNT/polymer composites produced using silsesquioxane grafted MWCNTs as a filler had a high electromagnetic interference shielding effectiveness. Homogeneous dispersion of silsesquioxane grafted MWCNTs occurred throughout the polymer without any aggregation, while a pristine MWCNT aggregate that integrated several nanotube domains existed in the polymer matrix. A comparative study of the optical transmittance, electrical, and electromagnetic interference shielding properties of poly(l-lactide) (PLLA)/MWCNT composites based on pristine MWCNTs and silsesquioxane grafted MWCNTs was carried out. A high electromagnetic interference shielding effectiveness (15–16 dB) was obtained in the 36–50 GHz range at a relatively low filler loading (4 wt%) in the PLLA/silsesquioxane grafted MWCNT composite.

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Acknowledgements

The authors gratefully acknowledge financial support of this work coming from Natural Science Foundation of China (NSFC) (No. 21074009) and Young Foundation of Beijing University of Chemical Technology.

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Authors and Affiliations

  1. Key Laboratory on Preparation and Processing of Novel Polymer Materials of Beijing, Beijing University of Chemical Technology, Beijing, 100029, China

    Qi-Fang Li, Yihui Xu & Guang-Xin Chen

  2. Department of Polymer Science and Engineering, Inha University, Incheon, 402-751, Korea

    Jin-San Yoon

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  1. Qi-Fang Li
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  2. Yihui Xu
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  3. Jin-San Yoon
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  4. Guang-Xin Chen
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Correspondence to Guang-Xin Chen.

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Li, QF., Xu, Y., Yoon, JS. et al. Dispersions of carbon nanotubes/polyhedral oligomeric silsesquioxanes hybrids in polymer: the mechanical, electrical and EMI shielding properties. J Mater Sci 46, 2324–2330 (2011). https://doi.org/10.1007/s10853-010-5077-0

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  • DOI: https://doi.org/10.1007/s10853-010-5077-0

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