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日用化学工业（中英文）

日用化学工业 ›› 2021, Vol. 51 ›› Issue (9): 825-831.doi: 10.3969/j.issn.1001-1803.2021.09.003

• 开发与应用 • 上一篇    下一篇

N,N-二甲基-9-癸烯酰胺与十二烷基硫酸钠复配协同效应研究

许德锟1,方银军2,刘雪锋1,*()   

  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 214000
    2.赞宇科技集团股份有限公司,浙江 杭州 310030
  • 收稿日期:2020-12-12 修回日期:2021-08-25 出版日期:2021-09-22 发布日期:2021-09-23
  • 通讯作者: 刘雪锋
  • 基金资助:
    赞宇科研基金

Synergistic effect of N, N-dimethyl-9-decenamide and sodium dodecyl sulfate

Xu Dekun1,Fang Yinjun2,Liu Xuefeng1,*()   

  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:2020-12-12 Revised:2021-08-25 Online:2021-09-22 Published:2021-09-23
  • Contact: Xuefeng Liu

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摘要：

为了改善绿色非离子表面活性剂N,N-二甲基-9-癸烯酰胺（NADA）水溶性较差的缺陷,将NADA与阴离子表面活性剂十二烷基硫酸钠（SDS）复配并考察了NADA和SDS二者之间的协同效应。结果表明:NADA与SDS复配后二者之间产生正协同效应,可以有效地改善NADA在水中的溶解性,当SDS的摩尔分数xS>0.05时,NADA-SDS复配体系水溶液（其中NADA的质量分数为1%）在25 ℃时呈澄清透明。NADA-SDS混合胶束可以明显地提高NADA-SDS降低表面张力的效率,当NADA的摩尔分数xN=0.5时,临界胶束浓度（cmc,以NADA-SDS总浓度计）具有最小值（约为4.04 mmol/L）,且混合胶束的临界胶束聚集数（[Nm]）具有最大值（约为76）;与SDS相比,NADA与SDS复配可以将水的表面张力降至更低,在xN=0.9时,cmc处对应表面张力（γcmc）具有最小值（约为28.44 mN/m）。

关键词: 复配体系, 协同效应, N,N-二甲基-9-癸烯酰胺, 十二烷基硫酸钠, 临界胶束聚集数

Abstract:

In order to address the defect of poor water solubility of the non-ionic surfactant N, N-dimethyl-9-decenamide （NADA）, the possible synergistic effect between NADA and anionic surfactant sodium dodecyl sulfate （SDS） was investigated in the binary systems of NADA-SDS. The results show that positive synergistic effects are observed by blending NADA and SDS, leading to an obvious increasing in water solubility of NADA. At 25 ℃, the aqueous solutions of NADA-SDS （where the mass fraction of NADA is 1%） are transparent when the mole fraction of SDS （xS） > 0.05. The efficiency of reducing surface tension is significantly improved by the formation of NADA-SDS hybrid micelles. The minimum critical micelle concentration （cmc, in terms of the total concentration of NADA-SDS） and the maximum critical micelle aggregation number （[Nm]） are obtained at the mole fraction of NADA （xN） = 0.5 as 4.04 mmol/L and 76, respectively. The effectiveness of reducing surface tension of NADA-SDS is remarkably enhanced by the forming of NADA-SDS hybrid adsorption layer. The minimum surface tension at cmc （γcmc） of 28.44 mN/m is achieved at xN = 0.9.

Key words: binary system, synergistic effect, N,N-dimethyl-9-enamide, sodium dodecyl sulfate, critical micellar aggregation number

中图分类号: 

  • TQ423