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Depolymerization of PS50 using a 25 mL stainless steel reactor, eight 10 mm stainless steel balls, and 1 g PS50 (+0.1 g BA), milled at 30 Hz; (a) styrene yield with time under cl. conditions, (b) corresponding selectivity for PS50 by itself and for PS50 + BA, (c) styrene yield for closed and open (20 sccm gas flow) conditions with and without BA, and (d) variation in proportion of PS50 to BA under closed conditions.
