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Poly(methyl acrylate-co-methyl methacrylate)/montmorillonite nanocomposites fabricated by soap-free emulsion polymerization

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Abstract

The exfoliated poly(methyl acrylate-co-methyl methacrylate)/montmorillonite (MMT) nanocomposite latex solutions fabricated by soap-free emulsion polymerization were able to cast into a film. The films were transparent and ductile unless more than 5 wt% of MMT was incorporated. With the MMT content higher than 5 wt%, the inflammable residuals of nanocomposites after combustion could preserve their original film profile acting like an inflammable scaffold. Moreover, as 20 wt% MMT was incorporated, the yield strength of the films was increased up to 20 times and Young’s modulus up to 2,000 times. However, the water vapor permeability coefficient of the films was only decreased down to its half value. This unexpected behavior of permeability was associated with the decrease of T g as the content of MMT was increased, owing to the large difference of the reactivity ratios between methyl acrylate and methyl methacrylate monomers and their differential absorption to the MMT during copolymerization.

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Acknowledgement

The authors acknowledge the financial support of the National Science Council in Taiwan, Republic of China, through Grant NSC95-2216-E-002-206.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan, Republic of China

    Chia-Hsin Lee, Ming-Huei Yen & King-Fu Lin

  2. Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, Republic of China

    An-Ting Chien & King-Fu Lin

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  1. Chia-Hsin Lee
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  2. An-Ting Chien
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  3. Ming-Huei Yen
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  4. King-Fu Lin
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Correspondence to King-Fu Lin.

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Lee, CH., Chien, AT., Yen, MH. et al. Poly(methyl acrylate-co-methyl methacrylate)/montmorillonite nanocomposites fabricated by soap-free emulsion polymerization. J Polym Res 15, 331–336 (2008). https://doi.org/10.1007/s10965-008-9175-5

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  • DOI: https://doi.org/10.1007/s10965-008-9175-5

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