“…Copolymers of MMA and GMA (Mn = 5500) containing 34.0 mol % of GMA were synthesized by radical polymerization with 2,2'-azobis(isobutyronitrile) (AIBN) as initiator and thiophenol (TP) as chain transfer agent at 60 °C in vacuum-sealed ampoules, as previously described. 27 The MMA-GMA copolymers have been characterized by an ir method (28).…”