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日用化学工业 ›› 2019, Vol. 49 ›› Issue (2): 63-69.doi: 10.3969/j.issn.1001-1803.2019.02.001

• 基础研究 •    下一篇

可分解香兰素基非离子表面活性剂的乳化性

丁凤美1,2,周翔1,2(),李居龙1,2,邢志奇1   

  1. 1.东华大学 化学化工与生物工程学院,上海 201620
    2.生态纺织教育部重点实验室(东华大学),上海 201620
  • 收稿日期:2018-06-15 修回日期:2019-01-22 出版日期:2019-02-22 发布日期:2019-03-15
  • 通讯作者: 周翔
  • 作者简介:丁凤美(1981-),女,山东人,助理研究员,博士,电话:13816043060,E-mail:dfm@dhu.edu.cn。
  • 基金资助:
    国家高技术研究发展计划(863计划)资助项目(2013AA06A307)

The emulsibility of cleavable vanillin-based nonionic surfactants

Feng-mei DING1,2,Xiang ZHOU1,2(),Ju-long LI1,2,Zhi-qi XING1   

  1. 1.College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
    2.Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education (Donghua University), Shanghai 201620, China
  • Received:2018-06-15 Revised:2019-01-22 Online:2019-02-22 Published:2019-03-15
  • Contact: Xiang ZHOU

摘要:

针对已合成的含缩醛结构的环保型非离子表面活性剂香兰素辛二醇缩醛聚氧乙烯醚(VAEO),研究不同乙氧基链长的VAEOnn=6~24)的表面活性及乳化性,并与壬基酚聚氧乙烯醚(NPEO10)的表面活性及乳化性作比较。结果表明,随EO聚合度(n)增大,VAEOn降低表面张力和油/水界面张力的能力下降,对石蜡乳化能力减弱。EO聚合度为6~10的VAEOn与NPEO10降低表面张力的能力相近,乳化性能也相当。VAEOn降低油/水界面张力的能力较NPEO10差。采用Material Studio软件模拟分析VAEOn和NPEO10乳化石蜡的能力,结果表明VAEOn乙氧基链越长,乳化石蜡重新聚集的速度越快,即乳化性能越差,模拟结果与乳化石蜡分相法的实验结果相吻合。

关键词: 香兰素基表面活性剂, 可分解, 乳化性, 表面活性, 壬基酚聚氧乙烯醚

Abstract:

A series of environment-friendly nonionic surfactants, vanillin 1,2-octanediolacetal polyoxyethylene ethers (VAEO) with acetal structure, have been successfully synthesized previously. The surface activity and emulsibility of VAEOnn=6-24) were studied, which were also compared with that of nonylphenol polyoxyethylene ether (NPEO10). The results show that, as the polyoxyethylene chain length (n) of VAEOn increased, the abilities of VAEOn to reduce the surface tension/interfacial tension and to emulsify paraffin are both decreased. As for the VAEOn with low degree of EO polymerization (n=6-10), their surface activity and emulsibility are similar to those of NPEO10. The ability of VAEOn to reduce oil-water interfacial tension is worse than that of NPEO10. The software "Material Studio" is used to simulate VAEOn and NPEO10 in emulsifying paraffin in water, showing that the paraffin aggregated faster for the VAEOn with longer polyoxyethylene chain length, which is consistent with the experimental results by split-phase method.

Key words: vanillin-based surfactant, cleavable, emulsibility, surface activity, nonylphenol polyoxyethylene ether

中图分类号: 

  • TQ423.2