The synthesis of poly(styrene-maleic anhydride) copolymers by frontal polymerization is reported. The propagating front can be achieved if the mole fraction of styrene (St) is 0.3 ≤ St ≤ 0.7 in the feed. Depending on the St/MA mole ratio alternating St-MA-St-MA copolymers (St/MA ≤ 1) or (St-MA)n-(St-St-St)m block copolymers (St/MA > 1) are formed. The microstructure of the copolymers obtained was estimated by means of 13C NMR spectroscopy.
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Szalay et al. (1999) studied this question.
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