Charge‐transfer complex between p‐oxathiene and maleic anhydride and its relative reactivity in alternating copolymerization

Charge-transfer complex formation and alternating copolymerization of p-oxathiene (POT)-maleic anhydride (MAnh) system were studied. Relative reactivity of POT-MAnh complex was obtained from three kinds of terpolymerizations. For example, in terpolymerization of POT, MAnh and acrylonitrile (AN), monomer reactivity ratios of POT-MAnh complex and AN were found as r1 (complex)=55,8 and r2 (AN)=0,0176 at 60°C. POT-MAnh, p-dioxene-MAnh and vinyl ether-MAnh systems were compared in relative reactivity and some physical properties concerning charge-transfer complex. The reactivity of those MAnh complexes was found to be controlled more significantly by some properties related to electron-donating power of donors rather than by resonance and polarity terms of separate donor monomers.