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Tangible plasticization/filler effects of sodium salts of dimer acids on the mechanical properties of styrene ionomers

Authors

  • Kwang-Hwan Ko,

    1. Department of Advanced Materials & Parts Engineering and BK21 Education Center of Mould Technology for Advanced Materials & Parts, Chosun University, Gwangju, Korea
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  • Hye Ryeon Park,

    1. Department of Chemistry, Chosun University, Gwangju, Korea
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  • Joon-Seop Kim,

    Corresponding author
    1. Department of Advanced Materials & Parts Engineering and BK21 Education Center of Mould Technology for Advanced Materials & Parts, Chosun University, Gwangju, Korea
    • Department of Advanced Materials & Parts Engineering and BK21 Education Center of Mould Technology for Advanced Materials & Parts, Chosun University, Gwangju, Korea
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  • Young-Wun Kim

    1. Green Chemistry Research Division, Surfactant & Lubricant Research Team, KRICT, Daejeon, Korea
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Abstract

The effects of the presence of dimer acid (DA) molecules in Na-sulfonated polystyrene (PSSNa) and poly(styrene-co Na-methacrylate) (PSMANa) ionomers on the ionomer properties were investigated using a dynamic mechanical analysis technique. The DA decreased the matrix and cluster Tgs of PSSNa ionomer without changing the ionic modulus, suggesting that the DA resided both in the matrix and cluster regions of PSSNa ionomer and acted mainly as a plasticizer. On the other hand, the DA decreased the cluster Tg of PSMANa ionomer, without changing the matrix Tg, and also increased the ionic modulus, implying that the DA behaved like plasticizer only for the cluster regions. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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