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日用化学工业（中英文）

日用化学工业 ›› 2020, Vol. 50 ›› Issue (10): 669-675.doi: 10.3969/j.issn.1001-1803.2020.10.003

• 开发与应用 • 上一篇    下一篇

含硒表面活性剂n-庚基-硒-n-辛基硫酸酯钠的合成与性质

刘德琼1(),张永民1,樊晔1,刘雪锋1(),方银军2   

  1. 1.江南大学 化学与材料工程学院 合成与生物胶体教育部重点实验室,江苏 无锡 214122
    2.赞宇科技集团股份有限公司,浙江 杭州 310030
  • 收稿日期:2020-01-17 修回日期:2020-09-23 出版日期:2020-10-22 发布日期:2020-10-22
  • 通讯作者: 刘雪锋
  • 作者简介:刘德琼（1995-）,女,湖北人,硕士研究生,电话：17851306929,E-mail： 17851306929@163.com。
  • 基金资助:
    国家自然科学基金资助项目(21673103);赞宇科研基金资助项目

Synthesis and properties of sodium n-heptylselanyloctyl sulfate

LIU De-qiong1(),ZHANG Yong-min1,FAN Ye1,LIU Xue-feng1(),FANG Yin-jun2   

  1. 1. Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
    2. Zanyu Technology Group Co., Ltd., Hangzhou, Zhejiang 310030, China
  • Received:2020-01-17 Revised:2020-09-23 Online:2020-10-22 Published:2020-10-22
  • Contact: Xue-feng LIU

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摘要：

含硒表面活性剂的分子疏水尾链中嵌插有二价硒醚基团（-Se-）,是具有Redox-开关响应的功能表面活性剂。为进一步丰富含硒表面活性剂的研究,设计并合成了一种含硒阴离子表面活性剂n-庚基-硒-n-辛基硫酸酯钠（C7SeC8SO4Na）,在C7SeC8SO4Na水溶性、降低气/液和液/液界面张力、泡沫和乳化等性质研究的基础上,考察了C7SeC8SO4Na的氧化（H2O2）还原（Na2SO3）可逆响应行为。结果表明,C7SeC8SO4Na的Krafft温度为（21.7±0.3） ℃,其cmc值为7.3×10-4 mol/L（30 ℃,吊环法）;在H2O2的作用下,C7SeC8SO4Na分子中的-Se-基团可以被氧化成四价硒亚砜基团（-SeO-）最终得到C7SeOC8SO4Na;与C7SeC8SO4Na相比,C7SeOC8SO4Na的水溶性更好,但是降低表（界）面张力、泡沫和乳化等性能明显更差;在Na2SO3的作用下,C7SeOC8SO4Na被还原成C7SeC8SO4Na,其降低表（界）面张力、泡沫和乳化等性能得以复原。

关键词: n-庚基-硒-n-辛基硫酸酯钠, 氧化还原, 可逆响应

Abstract:

The selenium-containing surfactants are functional surfactants with a redox-switchable divalent selenide group （-Se-） embedded in the hydrophobic tail. In order to further enrich the research of Se-containing surfactants, an anionic surfactant of sodium n-heptylselanyloctyl sulfate （C7SeC8SO4Na） was synthesized. Its water solubility, reduction of gas-liquid and liquid-liquid interfacial tensions, foaming properties and emulsifying properties were studied. The reversible redox-response behavior of C7SeC8SO4Na was investigated. The results showed that, the Krafft temperature of C7SeC8SO4Na was （21.7±0.3） ℃, and its critical micelle concentration was 7.3×10-4 mol/L （30 ℃, ring method）. C7SeC8SO4Na was transformed into C7SeOC8SO4Na after oxidation with H2O2 because the selenide group in C7SeC8SO4Na was oxidized to the selenoxide group. Compared with C7SeC8SO4Na, C7SeOC8SO4Na had better water solubility, but the abilities of reducing surface and/or interfacial tensions, foaming and emulsification were obviously worse. After reduction with Na2SO3, C7SeOC8SO4Na was restored to its reduced form （C7SeC8SO4Na）, and then the abilities of reducing surface and/or interfacial tensions, foaming and emulsification were recovered.

Key words: sodium n-heptylselanyloctyl sulfate, redox, reversible response

中图分类号: 

  • TQ423