Synthesis and study of sulfonated poly(ether-ketone)s

An aromatic poly(ether-ketone) was prepared by the reaction of 2,2-bis(4-hydroxyphenyl)-propane with 4,4'-difluorobenzophenone and it was further sulfonated using chlorosulfonic acid and trimethylchlorosilane in 1,2-dichloroethane solution. The resulting sulfonated polymers were characterized by elemental analyses, gel permeation chromatography, infrared and H-1-NMR spectroscopy, thermogravimetric analyses and differential scanning calorimetry. Some correlations between the conditions of sulfonation reaction and the properties of the resulting polymers were made

Traitement homéopathiques des lithiases. Application de Calcarea carbonica vue au travers de quelques cas cliniques

REIMS-BU Santé (514542104) / SudocSudocFranceF