Chlorination of poly[(1-trimethylsilyl)-1-propyne] membrane

A characterization of poly[( l-trimethylsilyl)-1-propyne] (PTMSP) membranes treated with chlorine water is presented. PTMSP chlorination was carried o ut by dipping a PTMSP membrane in chlorine water at 25 degrees C. X-ray mic roanalysis reveals that after treatment the chlorine amount is relevant in the whole section of membranes and that the chlorine concentration increase is balanced by the silicon concentration decrease. Pristine PTMSP and chlo rinated PMSTP vibrational spectra allow to suppose that in the macromolecul e "special sites" are present which may be preferentially attacked by chlor ine. A chlorination reaction scheme is given here.