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低分子量聚N-乙烯基甲酰胺-co-乙烯胺的合成

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2016-03-15

Journal: 精细化工

Included Journals: EI、CSCD、ISTIC、PKU

Volume: 33

Issue: 3

Page Number: 259-265

ISSN: 1003-5214

Key Words: 低分子量;聚N-乙烯基甲酰胺-co-乙烯胺;聚N-乙烯基甲酰胺;沉淀聚合;循环利用

Abstract: 以N-乙烯基甲酰胺为单体,N,N-二甲基甲酰胺和乙酸乙酯为混合溶剂,偶氮二异丁腈为引发剂,十二硫醇为链转移剂,通过沉淀聚合法制备了低分子量的聚N-乙烯基甲酰胺.详细研究了单体质量分数、混合溶剂配比、引发剂用量、链转移剂用量、反应温度及反应时间对聚合反应的影响.在最佳聚合条件下,聚合物收率可达93.1%、聚合物的数均分子量(Mn)为2975.2,PDI=2.64,且聚合残液可循环利用.然后将所得聚合物在酸性条件下水解,制备了不同胺化度的聚N-乙烯基甲酰胺-co-乙烯胺,产品的数均分子量为1000~1400,PDI为1.34~1.40.

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