高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (6): 1330.doi: 10.7503/cjcu20140113

• 高分子化学 • 上一篇    下一篇

聚氧乙烯醚型表面活性剂的合成及表面性质

黄海龙1,2, 李红玉1,2, 张雷1,2, 任天瑞1,2()   

  1. 1. 上海师范大学生命与环境科学学院, 教育部资源化学重点实验室
    2. 植物种植资源开发中心, 上海 200234
  • 收稿日期:2014-02-18 出版日期:2014-06-10 发布日期:2014-04-29
  • 作者简介:联系人简介: 任天瑞, 男, 博士, 教授, 主要从事高分子助剂研究. E-mail:trren@shnu.edu.cn
  • 基金资助:
    国家“八六三”计划项目(批准号: 2011AA100503)和国家自然科学基金(批准号: 21172147)资助

Surface and Interfacial Properties of Polyoxyethylene Ether-type Surfactants

HUANG Hailong1,2, LI Hongyu1,2, ZHANG Lei1,2, REN Tianrui1,2,*()   

  1. 1. Key Laboratory of Resources Chemistry, Ministry of Education, College of Life and Environmental Sciences
    2. Plant Resources Development Centre, Shanghai Normal University, Shanghai 200234, China
  • Received:2014-02-18 Online:2014-06-10 Published:2014-04-29
  • Contact: REN Tianrui E-mail:trren@shnu.edu.cn
  • Supported by:
    † Supported by the National High Technology Research and Development Program of China(No.2011AA1005003) and the National Natural Science Foundation of China(No.21172147)

摘要:

合成了一系列不同聚合度的聚壬基酚聚氧乙烯醚型非离子表面活性剂, 通过红外光谱和核磁共振等手段对其结构进行表征, 用表面张力法对合成产物的表面性能进行研究. 结果表明, 随着表面活性剂分子中亲水基团环氧乙烷(EO)片段的增加, 单体、 二聚体和三聚体的临界胶束浓度(cmc)值都逐渐增大, 当EO数目相同时, 单体、 二聚体和三聚体的cmc值依次明显降低. 二聚体与三聚体都显示出很好的表面性质, 其中三聚体的表面性质比二聚体表面性能更优. 在空气/水表面二聚体和三聚体比单体的排列更加紧密, 表现出更好的吸附和分散性能.

关键词: 聚壬基酚聚氧乙烯醚表面活性剂, 临界胶束浓度, 表面张力

Abstract:

A series of poly nonylphenol polyoxyethylene ether nonionic surfactants with different polymerization degerees was synthesized with nonyl phenol and formaldehyde. The structures were characterized by infrared spectroscopy and nuclear magnetic resonance. Moreover, the surface properties were evaluated using the surface tension method. It is found that critical micelle concentration(cmc) of monomer, dimer and trimer incease with increasing of the number of hydrophilic group epoxyethane(EO) of the surfactants. In the case of the same number of EO, the cmc of surfactants were significantly reduce with the increase of the degree of polymerization. Although dimer and trimer show good surface properties, the surface property of trimer is more excellent than dimer. Moreover, dimer and trimer show more excellent adsorption and dispersion performance because the arrangments of them on the air/water boundary are significantly more compacted than dimer.

Key words: Polyoxyethylene ether surfactant, Critical micelle concentration, Surface tension

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