【摘要】 <正> 2,2,6,6-四甲基-4-氧哌啶氮氧自由基(TMPO)是六十年代后合成的一个新稳定自由基.这一物质可作类脂物的抗氧化剂,高分子材料的老化剂,它还被用作类脂、核酸、蛋白质、生物膜等生物高分子的新型自旋标记物,这已有专论叙述.另外TMPO对烯烃还有阻聚性质,如对丙烯酸类、苯乙烯.文献曾报道TMPO对苯乙烯、甲基丙更多还原

【Abstract】 The inhibition effects of 2,2, 6, 6-tetramethyl-4-oxo-piperidine-l-oxyl (TMPO) on radical polymerization of methyl methacrylate, styrene and isoprene under the initiation of benzoyl perooxide or α, α’-azodiisobutyronitrile have been studied. The experimental results showed that the inhibition effect is predominant when the concentration of TMPO is approximately equal to 0.1% of that of monomers. This effect becomes more prominent when TMPO is incorporated with quinones, such as 1,4-ben-zoquinone, 1, 4-naphthoquinone, 9,10-phenanthrenequinone and chloranil.更多还原