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本文研究了苯乙烯、甲基丙烯酸甲酯、二氧化硫三元共聚合反应。其产品的特性用元素分析,红外和紫外光谱,NMR,DSC,TG等进行了详细地表征。该产品只有一个玻璃化温度132.5℃,故认为它是一个共聚物——聚(苯乙烯-甲基丙烯酸甲酯-砜),而不是一个均聚物的混合物。将聚(苯乙烯-砜)、聚(苯乙烯-甲基丙烯酸甲酯-砜)、聚甲基丙烯酸甲酯分别加热时,它们分别在252℃、272℃、282℃开始分解。当这些产品的溶液用三支30瓦的低压汞灯辐照时,聚(苯乙烯-砜)溶液的粘度下降速度比聚(苯乙烯-甲基丙烯酸甲酯-砜)快,聚甲基丙烯酸甲酯最慢。
In this paper, styrene, methyl methacrylate, sulfur dioxide ternary copolymerization reaction. The characteristics of its products were characterized in detail by elemental analysis, infrared and UV spectroscopy, NMR, DSC, TG and the like. The product has only a single glass transition temperature of 132.5 ° C, so it is considered a copolymer - poly (styrene-methyl methacrylate-sulfone), rather than a homopolymer mixture. When poly (styrene-sulfone), poly (styrene-methyl methacrylate-sulfone) and polymethylmethacrylate were respectively heated, they decomposed at 252 ° C, 272 ° C and 282 ° C, respectively. When the solutions of these products were irradiated with three 30 watt low pressure mercury lamps, the viscosity of the poly (styrene-sulfone) solution decreased more rapidly than poly (styrene-methyl methacrylate-sulfone), and the polymethacrylic acid Methyl ester is the slowest.