摘要
以咪唑、溴代戊烷为原料合成N-戊基咪唑,再用N-戊基咪唑与溴代辛烷、溴代癸烷、溴代十二烷、溴代十四烷,利用超声波辅助合成一系列N,N′-二烷基咪唑溴化铵.采用1H-NMR对N-戊基咪唑以及N,N′-二烷基咪唑溴化铵进行了结构表征.测定了N,N′-二烷基咪唑溴化铵的电导率和表面张力.结果表明:N,N′-二烷基咪唑溴化铵有较高的电导率并且随着浓度的增大而线性增大;N,N′-二烷基咪唑溴化铵可以降低水溶液的表面张力,且随着浓度的增大表面张力降低,随着烷基链的增长临界胶束浓度减小.
N-pentyl imidazole was synthesized from imidazole and bromopentane. N,N'-dialkyl imidazole ammonium bromide was synthesized from N-pentyl imidazole, bromooctane, bromodecane, bromododecane, bromotetradecane by the means of ultrasonic assistance. The N-alkyl imidazole and N,N'-dialkyl imidazole ammonium bromide were identified by 1H-NMR. The conductivity and surface tension of the N,N'-dialkyl imid- azole ammonium bromide were also determined. The results showed that N,N'-dialkyl imidazole ammonium bromide had high conductivity which increased linearly with the concentration increasing; N,N'-dialkyl imidaz- ole ammonium bromide can reduce the surface tension of aqueous solution which reduced with the concentra- tion increasing, and the cmc is reduced with the increasing of alkyl chain.
出处
《印染助剂》
CAS
北大核心
2012年第7期5-7,共3页
Textile Auxiliaries
基金
齐齐哈尔大学研究生创新项目(2011-030X)
黑龙江省科技厅自然科学基金(B201116)
关键词
离子液体型表面活性剂
织物助剂
合成
性能
ionic liquid type surfactants
fabric auxiliaries
synthesis
properties