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研究了２，２，６，６－四甲基－４－羟基哌啶羟胺（ＴＭＨＰＨＡ）和２，２，６，６－四甲基－羟基哌啶－１－氧自由基（ＴＭＨＰＯ）对偶氮二异丁腈（ＡＩＢＮ）６０℃引发的苯乙烯（Ｍ１）－甲基丙烯酸甲酯（Ｍ２）共聚合的行为．结果表明，两种阻聚剂对苯乙烯（Ｓｔ）－甲基丙烯酸甲酯（ＭＭＡ）共聚合均呈现良好的阻聚效应，其中ＴＭＨＰＨＡ略优于ＴＭＨＰＯ；同时观察到Ｓｔ－ＭＭＡ共聚表观活化能和竞聚率表现出的差异．当阻聚剂为２００μｇ时，共聚物组成发生改变，它们的恒比共聚点由对照实验的０．５２９分别变化为０．５４３（ＴＭＨＰＨＡ）和０．５６７（ＴＭＨＰＯ）．
The effects of 2,2,6,6-tetramethyl-4-hydroxypiperidine hydroxylamine (TMHPHA) and 2,2,6,6-tetramethyl-hydroxypiperidine-1-oxyl free radical (TMHPO) Diisobutyronitrile (AIBN) 60 ° C initiates the behavior of styrene (Ml) -methyl methacrylate (M2) copolymerization. The results showed that the two polymerization inhibitors exhibited good polymerization inhibition effect on the copolymerization of styrene (St) and methyl methacrylate (MMA), of which TMHPHA was slightly better than TMHPO. At the same time, the apparent activation of St-MMA copolymerization Differences that can show with re-rating. When the inhibitor was 200 μg, the copolymer composition changed, and their constant ratio copolymerization points changed from 0.529 (TMHPHA) and 0.567 (TMHPO) of the control experiment respectively.