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Synthesis and characterization of polyurethane/epoxy interpenetrating network nanocomposites with organoclays

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Summary

Novel nanocomposites with varying contents of organophilic montmorillonite (oMMT) were prepared by intercalating oMMT to interpenetrating polymer networks (IPNs) of polyurethane and epoxy resin (PU/EP). The PU/EP networks and the oMMT modified PU/EP IPNs nanocomposites were studied with Fourier transform infrared spectrometry, scanning electronic microscopy, transmission electronic microscopy, wide-angle X-ray diffraction, water absorption and tensile test. The results show that oMMT and the IPNs of polyurethane and epoxy resin exhibit synergistic effect on the phase structure and morphology of the IPNs nanocomposites. The addition of oMMT to the PU/EP IPNs matrix provides two fold benefits to the properties of the IPNs nanocomposites. oMMT has not a distinct effect on chemical structure of PU/EP IPNs but promotes the compatibility and phase structure of the IPNs, and the ‘forced compatibility’ of PU and EP in interpenetrating process improves the dispersion degree of oMMT. Both the mechanical properties and water resistance of the PU/EP IPNs nanocomposites are superior to those of the pure PU/EP IPNs.

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Authors and Affiliations

  1. School of Material Science & Engineering, Xi’an Jiaotong University, Xi’an, 710049, China

    Q.M. Jia, M. Zheng, H.X. Chen & R.J. Shen

Authors
  1. Q.M. Jia
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  2. M. Zheng
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  3. H.X. Chen
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  4. R.J. Shen
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Correspondence to M. Zheng.

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Jia, Q., Zheng, M., Chen, H. et al. Synthesis and characterization of polyurethane/epoxy interpenetrating network nanocomposites with organoclays. Polym. Bull. 54, 65–73 (2005). https://doi.org/10.1007/s00289-005-0372-7

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  • DOI: https://doi.org/10.1007/s00289-005-0372-7

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