Abstract

Samples of powder cotton cellulose modified by sterically hindered phenol fragments, whose composition and structure were established using methods of elemental analysis, IR and NMR ¹H spectroscopy, were obtained. Antiradical activity of the obtained samples of modified cellulose was determined in their reactions with a stable radical—2,2-diphenyl-1-picrylhydrazyl. It was established that modification of cellulose by sterically hindered phenol fragments leads to sharp increment of its antiradical activity. Hydrazide derivative of cellulose shows antiradical activity comparable with that of antioxidant Ionol (2,6-di-tret-butyl-4-methylphenol).

中文翻译：

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棉花纤维素的位阻酚片段的改性。

摘要

获得了用位阻酚片段改性的粉状棉纤维素样品，其成分和结构是通过元素分析，IR和NMR ¹ H光谱法确定的。所得改性纤维素样品的抗自由基活性是通过与稳定的自由基2,2-二苯基-1-吡啶并肼反应确定的。已经确定，通过位阻酚片段对纤维素的修饰导致其抗自由基活性的急剧增加。纤维素的酰肼衍生物显示出与抗氧化剂Ionol（2,6-di-tret-butyl-4-methylphenol）相当的抗自由基活性。