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NMR relaxation and micro-imaging study of polystyrene in concentrated cyclohexane solution

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Abstract

13C-relaxation times of polystyrene (PS) in its θ solvent, cyclohexane, are measured at different temperatures. A two-step model for the dissolution is proposed. Swelling of the polymer below the θ temperature is eventually the dispersion of the side group phenyl rings only. While above the θ temperature, complete dissolution is the dispersion of the main chain at a molecular level. The results of T1(C) are confirmed by1H-NMR imaging. NMR and its imaging are powerful twls to study the dynamic behavior of dissolution process of polymers in their θ solvents.

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Authors and Affiliations

  1. Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics, Chinese Academy of Sciences, 430071, Wuhan, China

    Shizhen Mao, Guangliang Ding, Hanzhen Yuan, Hanqiao Feng & Youru Du

Authors
  1. Shizhen Mao
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  2. Guangliang Ding
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  3. Hanzhen Yuan
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  4. Hanqiao Feng
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  5. Youru Du
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Additional information

Project supported by the National Key Projects for Fundamental Research “Macromolecular condensed state”, the State Science and Technology Commission of China.

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Mao, S., Ding, G., Yuan, H. et al. NMR relaxation and micro-imaging study of polystyrene in concentrated cyclohexane solution. Sci. China Ser. A-Math. 40, 408–411 (1997). https://doi.org/10.1007/BF02911441

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  • DOI: https://doi.org/10.1007/BF02911441

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