刘少杰,王华丽,崔笑菲,杜慧丽,邢玉彬

• 1:河北科技大学化学与制药工程学院

摘要(Abstract)：

以溴化的聚乙二醇(PEG)为大分子引发剂,甲基丙烯酸2,2,6,6-四甲基哌啶醇酯(TMPM)为单体,通过电子转移活化再生催化剂原子转移自由基聚合(ARGET ATRP),得到PEG-PTMPM嵌段共聚物,然后经过3-氯过氧苯甲酸氧化,得到含氮氧自由基的嵌段共聚物(PEG-PTMA)。分别制备了两种嵌段共聚物MPEG-PTMA和PTMA-PEG-PTMA。在NaClO水油两相氧化体系下,研究了嵌段共聚物结构对伯醇选择性催化氧化性能的影响。结果表明,PEG链段和PTMA链段分子量以及嵌段共聚物类型均会影响催化性能,PEG分子量为2000的嵌段共聚物的活性甚至优于未负载的小分子TEMPO,对苯甲醇的转化率可达100%,对其它伯醇的转化率也在95%以上。嵌段共聚物回收方便,重复使用5次活性未见明显降低。

关键词(KeyWords)： 嵌段共聚物;氮氧自由基;NaClO;选择性催化氧化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21304030)

作者(Author): 刘少杰,王华丽,崔笑菲,杜慧丽,邢玉彬

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