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Microstructure and mechanical properties of polyurethane/nylon/montmorillonite nanocomposite

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Abstract

Nanocomposite of polyurethane (PU), Nylon66 (nylon), and montmorillonite (MMT) was prepared by a twin screw extruder, and the dispersion of MMT and the mechanical properties of the nanocomposite were analyzed. Dimethyl hydrogenated tallow 2-ethylhexyl ammonium modified Cloisite 25A (C25A) and methyl tallow bis-2-hydroxyethyl ammonium modified Cloisite 30B (C30B) were used as MMT. XRD and TEM analysis indicated that the continuous melt mixing by a twin screw extruder was effective in MMT dispersion. C30B having hydroxyl group on its surface has better dispersion than C25A in the PU/nylon matrix. Maximum stress and strain at break were the maximum at 1 wt% MMT regardless of matrix composition, and decreased at higher MMT content. Best MMT dispersion was also observed at 1 wt% MMT for the entire matrix composition. Aggregation of MMT occurred at MMT content higher than 1 wt%. Nylon addition also induced the aggregation of MMT because of the high polarity of nylon surface. Dispersion of MMT was very important in improving the mechanical properties of PU/nylon nanocomposite.

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Authors and Affiliations

  1. Department of Polymer Engineering, The University of Suwon, 445-743, Suwon, Korea

    Byoung Chul Chun, Tae Keun Cho, Mi Hwa Chong, Yong-Chan Chung, David Martin, Jihua Chen & Jong-Shin Park

  2. Intelligent Textile System Research Center, 151-742, Seoul, Korea

    Byoung Chul Chun, Tae Keun Cho, Mi Hwa Chong, Yong-Chan Chung, David Martin, Jihua Chen & Jong-Shin Park

  3. Department of Chemistry, The University of Suwon, 445-743, Suwon, Korea

    Yong-Chan Chung

  4. Department of Materials Science and Engineering, The University of Michigan, Ann Arbor, USA

    David Martin & Jihua Chen

  5. Department of Biosystems & Biomaterials Science and Engineering, Seoul National University, 151-742, Seoul, Korea

    Jong-Shin Park

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  1. Byoung Chul Chun
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  2. Tae Keun Cho
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  3. Mi Hwa Chong
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  4. Yong-Chan Chung
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  5. David Martin
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  6. Jihua Chen
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  7. Jong-Shin Park
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Correspondence to Byoung Chul Chun.

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Chun, B.C., Cho, T.K., Chong, M.H. et al. Microstructure and mechanical properties of polyurethane/nylon/montmorillonite nanocomposite. Fibers Polym 8, 43–49 (2007). https://doi.org/10.1007/BF02908158

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  • DOI: https://doi.org/10.1007/BF02908158

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