共查询到18条相似文献,搜索用时 93 毫秒
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综述了阴离子、非离子、阳离子、两性离子娄表面活性剂及其两种主要原料(直链烷基苯磺酸盐、脂肪醇)的技术进展,概述了表面活性剂的发展方向。 相似文献
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水中阴离子表面活性剂测定方法概述 总被引:3,自引:0,他引:3
简要介绍了表面活性剂的性质,阴离子表面活性剂的种类及其对水体环境的危害;重点对水中阴离子表面活性剂的测定方法即分光光度法、两相滴定法、高效液相色谱法、薄层层析法及离子选择性电极分析法等进行了综述;提出了水中阴离子表面活性剂测定方法向信息化、实时快速在线监测智能化和检测仪器向微型化的方向发展。 相似文献
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本文介绍了抗静电剂作用机理和表面活性剂类抗静电剂的分类以及在高分子材料中应用特点,并结合聚氨酯结构特点和表面活性剂的不同使用效果,客观分析了氨纶纤维三种抗静电改性技术的优缺点(接枝共聚改性、制备导电纤维、采用表面活性剂),提出了内置添加强极性阴离子表面活性剂结合涂敷硬脂酸镁改性技术,该改性技术可以有效改善氨纶纤维的抗静电性能。 相似文献
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概述了国内外稠油乳化降黏用表面活性剂的研究进展,详细介绍了阴离子表面活性剂、非离子表面活性剂、阴离子一非离子两性表面活性剂及高分子表面活性剂、生物表面活性剂和氟碳表面活性剂等新型表面活性剂在稠油乳化降黏中的应用,评价了各种表面活性剂的优缺点,并提出了稠油乳化降黏用表面活性剂的发展前景。 相似文献
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徐星喜 《中国洗涤用品工业》2012,(8):46-50
阴离子表面活性剂是表面活性剂家族中的一大类别,在工业、农业以及民用产品中应用广泛。文章重点介绍了常用阴离子表面活性剂的特点、生产工艺以及在农业、纺织业、建筑业、石油、日化洗涤用品及化妆品中的应用,并展望了阴离子表面活性剂的发展前景。 相似文献
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影响钻井液中表面活性剂性能的因素探讨 总被引:1,自引:0,他引:1
考察了影响石油钻井液中表面活性剂性能的因素,如无机盐的质量分数、pH值、环境温度等。研究表明:氯化钠能有效降低阴离子表面活性剂的临界胶束浓度和最低表面张力,具有协调增效作用,而对非离子表面活性剂的影响程度较弱;酸碱度对阴离子表面活性剂的影响较大,而对非离子表面活性剂影响不明显;环境温度升高,能不同程度地提高表面活性剂的表面活性。 相似文献
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Eid M. S. Azzam 《Journal of surfactants and detergents》2001,4(3):293-296
The effect of different alkyl chains of anionic surfactants on properties of binary anionic-nonionic mixed surfactant systems
was studied. These systems included ocytldodecyl-, and cetylsulfoacetates mixed with isooctyl phenol nonyl ethoxylate. The
critical micelle concentration of mixed surfactants shifted to lower values compared to those of the single anionic surfactants.
Effectiveness values increased with decreases in the mole fraction of anionic surfactants. The negative values of interaction
parameter (β) increased with increases in the chain length of anionic surfactants. 相似文献
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概述了有机硅表面活性剂的结构和性质;从个人护理用品的角度详细阐述了非离子型、阳离子型、阴离子型、两性聚硅氧烷表面活性剂以及其他类型的有机硅表面活性剂.同时,展望了有机硅类表面活性剂的发展前景. 相似文献
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A. Fuangswasdi A. Charoensaeng D. A. Sabatini J. F. Scamehorn E. J. Acosta K. Osathaphan S. Khaodhiar 《Journal of surfactants and detergents》2006,9(1):29-37
Mixtures of anionic and cationic surfactants with single and twin head groups were used to solubilized styrene and ethylcyclohexane
into mixed micelles and adsolubilize them into mixed admicelles on silica and alumina surfaces. Two combinations of anionic
and cationic surfactants were studied: (i) a single-head anionic surfactant, sodium dodecyl sulfate (SDS), with a twin-head
cationic surfactant, pentamethyl-octadecyl-1,3-propane diammonium dichloride (PODD), and (ii) a twin-head anionic surfactant,
sodium hexadecyl-diphenyloxide disulfonate (SHDPDS), with a single-head cationic surfactant, dodecylpyridinium chloride (DPCl).
Mixtures of SDS/PODD showed solubilization synergism (increased oil solubilization capacity) when mixed at a molar ratio of
1∶3; however, the SHD-PDS/DPCl mixture at a ratio of 3∶1 did not show solubilization enhancement over SHDPDS alone. Adsolubilization
studies of SDS/PODD (enriched in PODD) adsorbed on negatively charged silica and SHDPDS/DPCl adsorbed on positively charged
alumina showed that while mixtures of anionic and cationic surfactants had little effect on the adsolubilization of styrene,
the adsolubilization of ethylcyclohexane was greater in mixed SHPDS/DPCl systems than for SHDPDS alone. Finally, it was concluded
that whereas mixing anionic and cationic surfactants with single and double head groups can improve the solubilization capacity
of micelles or admicelles, the magnitude of the solubilization enhancement depends on the molecular structure of the surfactant
and the ratio of anionic surfactant to cationic surfactant in the micelle or admicelle. 相似文献
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It is commonly known that cationic and anionic surfactants cannot be mixed without the risk of precipitation or instability.
However, many studies have shown that not only is it possible to combine cationic and anionic surfactants, but also that this
combination can present synergic properties. Mixtures of anionic and cationic surfactants have many unique properties that
can be very useful when used properly. The aim of this report is to present relevant information concerning the interaction
between anionic and cationic surfactants. A bibliographic review on anionic/cationic mixtures is presented here in order to
better understand their properties and possible synergic effects, as this is of practical importance for the chemical industry.
相似文献
George NunesEmail: |
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以芘为荧光探针、二苯酮为猝灭剂,用稳态荧光探针法测定了新型Gemini表面活性剂的临界胶团浓度(CMC)、胶团聚集数(Nagg)及胶团微极性.研究了Gemini表面活性剂结构和氯化钠浓度对CMC、Nagg、胶团微极性的影响.结果表明,新型Gemini表面活性剂的CMC比常规表面活性剂的CMC低1—2个数量级.当疏水基碳原子数增加时,CMC依次降低,Nagg增大,胶团微极性减小.当氯化钠浓度增大时,Nagg增大,胶团微极性减小. 相似文献