Polymerization of styrene sulfonate ethyl ester by ATRP: Synthesis and characterization of macromonomers for Suzuki polycondensation

摘要

Macromonomers from SSE were synthesized via ATRP with initiators carrying functional groups that are polymerizable by Suzuki polycondensation. The material obtained had a monomodal molar mass distribution with a polydispersity of 1.3-1.6. The reaction kinetics in bulk and in solution were monitored by in situ H-1 NMR spectroscopy. Rate constants and the activation energy for SSE polymerization were determined to be k = 5.5 . 10(-5) s(-1) (DMF, 60 degrees C), 6.6 . 10(-4) s(-1)/1.4 . 10(-3) s(-1)/4.8 . 10(-3) s(-1) (bulk, 45/60/75 degrees C), E-a = 60.1 kJ . mol(-1) (bulk). Hydrolysis yielded the corresponding macromonomers of poly(styrene sulfonic acid).