Hassan Al-Shahri

Publications (1)2.39 Total impact

• Source

  Available from: mdpi.com

  Article: The cationic ring-opening polymerization of tetrahydrofuran with 12-tungstophosphoric acid.

  Ahmed Aouissi, Salem S Al-Deyab, Hassan Al-Shahri
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  ABSTRACT: The cationic ring-opening polymerization reaction of tetrahydrofuran at 20 degrees C was catalyzed by H3PW12O40 x 13 H2O as solid acid catalyst. The effect of the proportions of acetic anhydride and catalyst, reaction time and support on the polymerization reaction was investigated. It has been found that the yield and the viscosity of the polymer depend on the proportion of acetic anhydride, the presence of the latter in the reactant mixture being required for the ring-opening. The catalytic activity of the alumina-supported heteropolyacid results showed that Brønsted acid sites are more effective than Lewis ones for the cationic ring-opening polymerization.
  Molecules 01/2010; 15(3):1398-407. · 2.39 Impact Factor