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首页> 美国政府科技报告 >Blends of Styrene/Maleic Anhydride Copolymers with Polymethacrylates
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Blends of Styrene/Maleic Anhydride Copolymers with Polymethacrylates

机译：苯乙烯/马来酸酐共聚物与聚甲基丙烯酸酯的共混物

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The phase behavior of a series of styrene/maleic anhydride (SMA) copolymers withvarious polyacrylate and polymethacrylate homopolymers has been investigated using various techniques. None of the polyacrylates are miscible with SMA copolymers. Poly(methyl methacrylate) (PMMA) poly(ethyl methacrylate) (PEMA) and poly(n-propyl methacrylate) (PnPMA), are miscible with these copolymers over a certain range of maleic anhydride contents; whereas, the higher methacrylates apparently have no region of miscibility. For PEMA and PnPMA, the miscibility windows extend through 0% MA; hence, polystyrene is miscible with these polymethacrylates although the lower critical solution temperature is quite low. The exothermic heat of mixing styrene and ester analogs found here supports the observed miscibility of polystyrene with ethyl, n-propyl, and cyclohexyl (reported elsewhere) methacrylates.

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