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Cationic ring-opening polymerization of tetrahydrofuran with Keggin-type heteropolycompounds as solid acid catalysts

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Abstract

Three Keggin-type heteropolyanions, namely H3PMo12O40·13H2O, (NH4)3PMo12O40·4H2O and H3PW12O40·13H2O were prepared and tested in the ring-opening polymerization reaction of tetrahydrofuran. The effects of the counter-cation (H+, NH4 +) and the peripheral atoms (Mo, W) on the polymerization were investigated. It has been found that when the protons of H3PMo12O40·13H2O were replaced by the ammonium cations the polymerization rate decreased dramatically. Whereas, when the peripheral atoms (Mo) were replaced by their homologous (W), the polymerization rate increased twofold. As for the viscosity average molecular weight (M v) of polymer products, it was found that the high molecular weight (7930) was obtained by using H3PW12O40·13H2O. The molecular weight (M v) obtained by H3PMo12O40·13H2O and (NH4)3PMo12O40·4H2O was 6470 and 6810, respectively.

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Authors and Affiliations

  1. Chemistry Department, College of Science, King Saud University, Riyadh, KSA

    Ahmed Aouissi, Salim Salem Al-Deyab & Hassan Al-Shehri

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  1. Ahmed Aouissi
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  2. Salim Salem Al-Deyab
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  3. Hassan Al-Shehri
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Correspondence to Ahmed Aouissi.

Additional information

The work was financially supported by the Deanship of Scientific Research, King Saud University (No. M/202) and SABIC Company.

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Aouissi, A., Al-Deyab, S.S. & Al-Shehri, H. Cationic ring-opening polymerization of tetrahydrofuran with Keggin-type heteropolycompounds as solid acid catalysts. Chin J Polym Sci 28, 305–310 (2010). https://doi.org/10.1007/s10118-010-9007-z

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  • DOI: https://doi.org/10.1007/s10118-010-9007-z

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