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mixed surfactants
相关语句
  混合表面活性剂
     Study on the action of mixed surfactants in the multicomponent complex Mn(Ⅱ)—o-NPF— CTMAB—OP system
     多元络合物显色反应中混合表面活性剂作用的研究——Mn(Ⅱ)—o-NPF—CTMAB—乳化剂OP体系
短句来源
     In a medium of mixed surfactants of CPB-NP,Al(Ⅲ) reacts with CAS to form a stable violet-blue complex at pH 5.15.The maximum absorption wave of the complex locates at 625 nm and the molar absorptivity is 9.41 × 104 L/(mol·cm). Beer's law is obeyed in the range of 0-0.12 mg/L for aluminum.
     结果表明,在混合表面活性剂CPB-NP存在下,铝与铬天青S在HAc-NaAc介质中形成蓝紫色配合物,其最大吸收波长为625 nm,表观摩尔吸光系数为9.41×104 L/(mol.cm),线性范围为0~0.12 mg/L。
短句来源
     In a H 3PO 4 medium and in the presence of mixed surfactants OP+ CTMAB , gold(Ⅲ) reacts with the new reagent to form an orange 1∶5 complex, having its absorption maxima at 480nm with a mloar absorptivity of 2.0×10 6L·mol -1 ·cm -1 . Beer′s law is obeyed for gold(Ⅲ) in the range of 0~1 2μg/25ml.
     在H3PO4 介质及在混合表面活性剂OP +CTMAB存在下 ,Au(Ⅲ )与该试剂形成 1∶5的橙色络合物 ,最大吸收峰λmax=4 80nm ,摩尔吸光系数ε =2 .0× 10 6 L·mol- 1·cm- 1。 Au(Ⅲ )含量在 0~ 1.2 μg/2 5ml内符合比耳定律。
短句来源
     (2) Mixed surfactants with relatively low amount of SDS promoted phenanthrene biodegradation. For example, the biodegradation percentage of phenanthrene with 1:9 SDS-TX100 mixed solutions was about 170% of that with the single TX100 solution at the same TX100 concentration of 1.6 mmol/L in 24 h.
     (2) 一定配比和浓度下,SDS-TX100混合表面活性剂能促进污染土壤中菲的微生物降解,如在TX100浓度为1.6mmol/L时,1:9 SDS-TX100混合表面活性剂体系中,24h后微生物降解菲的效率提高约70%;
短句来源
     The colour reaction of Cd with 2-[(3,5-diCl-2-pyridyl)azo]-5-dimethyl-aminophenol (3,5-diCl-DMPAP)in the presence of various surfaetants or mixed surfactants has been studied.
     研究了2-[3,5-二氯-2-吡啶)偶氮]-5-二甲氨基酚,在不同表面活性剂和混合表面活性剂的存在下,与镉离子的显色反应。
短句来源
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  “mixed surfactants”译为未确定词的双语例句
     FOAMING PROPERTIES OF C_(12) NCl-AS MIXED SURFACTANTS
     C_(12)NCl/AS复配表面活性剂的泡沫性能
短句来源
     In the buffer solution of H3PO4HAcH3BO3NaOH at pH 9.8 to 10.6, manganese(Ⅱ) reacted with 5NSAF and form a 1∶2 purple complex in the presence of the mixed surfactants.
     在pH9.8~10.6的H3PO4 HAC H3BO3 NaOH缓冲溶液中,Mn(Ⅱ)与5 NSAF形成1∶2的紫色络合物。
短句来源
     The composite nanoparticles of polystyrene/Co_3O_4 are prepared in the mixed surfactants system of Triton X-100 and sodium dodecyl benzene sulfonate (SDBS).
     在非离子表面活性剂T riton X-100水溶液中制得Co3O4磁性纳米粒子,将其与苯乙烯在阴离子表面活性剂十二烷基苯磺酸钠(SDBS)溶液中引发聚合,制得聚苯乙烯/Co3O4复合纳米粒子.
短句来源
     introducing alkaline (2 000 mg/L NaOH) into the mixed surfactants solution—to decreasing Fcs from 1.67 to 1.55 and additional alkaline pad (2 000 mg/L NaOH)—to further decreasing Fcs to 1.45(20℃,1.5 m);
     在SDBS/OP 10溶液中加碱(2000mg/LNaOH)使Fcs由1.67减至1.55,增加前置碱段塞(2000mg/LNaOH)使Fcs再减至1.45(20℃,1.5m);
短句来源
     In the presence of mixed surfactants (TritonX-100-SDS),the colour reaction of 2-[2'-(6'-methoxy--benzothiazolyl)axo]-5-dimethylaminobenzoic acid (MOBTAMB) as a new reagent with Fe(Ⅱ) and Ni (Ⅱ) is studied.
     研究了新试剂2-[2′-(6′-甲氧基-苯并噻唑)偶氮]-5-二甲氨基苯甲酸(MOBTAMB)与Fe(Ⅱ),Ni(Ⅱ)的显色反应。
短句来源
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  相似匹配句对
     Synergism in Mixed Surfactants
     混合表面活性剂的协同效应
短句来源
     Study on Interation of Mixed Surfactants
     复合表面活性剂相互作用的研究
短句来源
     ⑤mixed.
     ⑤混合型。
短句来源
     Mild Surfactants
     温和表面活性剂(英文)
短句来源
     On Mixed Economy
     论混合经济
短句来源
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  mixed surfactants
Seeded growth of gold nanorods (NRs) has been accomplished in a micellar medium containing mixed surfactants or a high salt concentration.
      
The Adsorption of Mixed Surfactants at the Hydrophilic Silica Surface from Aqueous Solution: Studied by Specular Neutron Reflect
      
Highly ordered Fe-MCM-48 was synthesized by a mixed templation method under low molar ratio (0.17?:?1) of mixed surfactants to silica and characterized by XRD, 29Si-MAS NMR, ESR, and UV-Visible.
      
The effects of chain-length compatibility and the surface properties of mixed surfactants are relevant to the design of surfactant formulations for oil recovery under given reservoir conditions.
      
Comparison of QSAR and QSPR Based Aquatic Toxicity for Mixed Surfactants
      
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In this investigation, the surface-chemical properties of the mixed aqueous solutions of n-octyltrimethylammonium bromide (C_8 NMe_3Br) and sodium n-octylsulfate (C_8 SNa) have been studied. Some peculiar properties have been observed: (1) there is a very high surface activity of the mixed surfactants. The cmc of 1:1 (molar ratio) mixture is 7.5×10~(-3) m(cmc of C_8NMe_3Br: 2.6×10~(-1) m). The surface and interfaeial tension of 1:1 mixture are very low—down to ~23 and ~0.2 dyne/cm, whereas those of the...

In this investigation, the surface-chemical properties of the mixed aqueous solutions of n-octyltrimethylammonium bromide (C_8 NMe_3Br) and sodium n-octylsulfate (C_8 SNa) have been studied. Some peculiar properties have been observed: (1) there is a very high surface activity of the mixed surfactants. The cmc of 1:1 (molar ratio) mixture is 7.5×10~(-3) m(cmc of C_8NMe_3Br: 2.6×10~(-1) m). The surface and interfaeial tension of 1:1 mixture are very low—down to ~23 and ~0.2 dyne/cm, whereas those of the single ionic surfactant solution (at cmc or above) are ~40 and ~10 dyne/em, respectively; (2) the bubble-life and the drop-life of 1:1 mixture are both much longer than those of the single surfactant solution; (3) the 1:1 mixture has a much better wetting power on paraffin wax than a single ionic surfactant solution; (4) the total surface and interracial adsorptions of the non-1:1 mixture are nearly equal to those of the 1:1 mixture, in most cases the surface and interfacial tensions are very low, and the surface mole-ratio of C_8NMe_3~+ to C_8S~- approaches 1:1; and (5) there is no obvious effect upon the surface and interfacial adsorptions and cmc by adding an inorganic salt (NaBr) to the solution of the mixed surfactants. The Gibbs equation should be written as:-dγ=RTΓ_(Total)d In mC_5NMe_3~+(or C_8S-) rather than the 2RT form as applied in the case of an ionic surfactant. From this equation the minimum average "molecular" area of the surface film of 1:1 mixture has been calculated to be 27~29 ~2, which is much smaller than that of a single ionic surfactant (in general, >40~2), indicating a closer packing of the surfactant ions on the surface.The above mentioned characteristics show that there are strong interactions between cationic and anionic surfactants in the mixed solution. The nature of these interactions is essentially due to the Columbic attractions between the positive and negative charges of the surfactant ions in addition to the hydrophobic interactions between hydrocarbon chains.

本工作研究了碳氢链较短的溴化辛基三甲铵(简写为C_8NMe_3Br)及辛基硫酸钠(简写为C_8SNa)混合水溶液的一些表面化学性质:在表面及“油-水”界面上的混合吸附、在表面上的气泡寿命和在界面上的液滴寿命以及溶液在石蜡表面上的润湿性能。从这些性质了解正、负离子表面活性剂的相互作用。结果表明:(1)混合表面活性剂有很高的表面活性。1:1C_8NMe_3Br-C_8SNa混合物的临界胶团浓度(cmc)为~7.5×10~(-3)m,远小于单一表面活性剂。在此浓度时,表面张力低达~23达因/厘米;溶液-正庚烷的界面张力更低,达~0.2达因/厘米,亦远低于单一表面活性剂;(2)混合表面活性剂溶液有很高的气泡寿命及液滴寿命,亦即有较大的表面膜及界面膜强度;(3)混合溶液比单一表面活性剂的润湿性能好;(4)不同比例的C_8NMe_3Br-C_8SNa混合溶液的表(界)面总吸附量与1:1混合溶液的相近,当浓度较大时,吸附层中两者比例大多接近1:1,且表(界)面张力亦甚低:(5)与一般离子型表面活性剂的情形完全不同,无机盐对1:1混合溶液的表(界)面张力影响很小。计算吸附量时,Gibbs公式应取1RT形式,而不采用对一般离子...

本工作研究了碳氢链较短的溴化辛基三甲铵(简写为C_8NMe_3Br)及辛基硫酸钠(简写为C_8SNa)混合水溶液的一些表面化学性质:在表面及“油-水”界面上的混合吸附、在表面上的气泡寿命和在界面上的液滴寿命以及溶液在石蜡表面上的润湿性能。从这些性质了解正、负离子表面活性剂的相互作用。结果表明:(1)混合表面活性剂有很高的表面活性。1:1C_8NMe_3Br-C_8SNa混合物的临界胶团浓度(cmc)为~7.5×10~(-3)m,远小于单一表面活性剂。在此浓度时,表面张力低达~23达因/厘米;溶液-正庚烷的界面张力更低,达~0.2达因/厘米,亦远低于单一表面活性剂;(2)混合表面活性剂溶液有很高的气泡寿命及液滴寿命,亦即有较大的表面膜及界面膜强度;(3)混合溶液比单一表面活性剂的润湿性能好;(4)不同比例的C_8NMe_3Br-C_8SNa混合溶液的表(界)面总吸附量与1:1混合溶液的相近,当浓度较大时,吸附层中两者比例大多接近1:1,且表(界)面张力亦甚低:(5)与一般离子型表面活性剂的情形完全不同,无机盐对1:1混合溶液的表(界)面张力影响很小。计算吸附量时,Gibbs公式应取1RT形式,而不采用对一般离子型表面活性剂适用的2RT形式。由此得出的最小平均“分子”面积为27~29(?)2,表明吸附层中表面活性离子排列紧密,膜凝聚性强。上述结果充分说明正、负离子表面活性剂在水溶液中有强烈的相互作用,其本质主要在于附加的正、负电荷的库仑引力,由此导致正、负离子表面活性剂混合溶液的一系列表面化学特性。

The effects of the chain length of POE prepared from monodispersed polyoxyethyle-nated n-dodecyl alcohols on the thermodynamic properties,surface adsorption and micelle ?formation of mixed surfactants were studied.Experimental results indicate that the assu-mption of ideal mixing for the homologous mixtures appears reasonable.The surface ad-sorption ?_∞ and surface pressure πCMC of mixed solution are increased with the increaseof distribution coefficient resulting in a close molecular orientation...

The effects of the chain length of POE prepared from monodispersed polyoxyethyle-nated n-dodecyl alcohols on the thermodynamic properties,surface adsorption and micelle ?formation of mixed surfactants were studied.Experimental results indicate that the assu-mption of ideal mixing for the homologous mixtures appears reasonable.The surface ad-sorption ?_∞ and surface pressure πCMC of mixed solution are increased with the increaseof distribution coefficient resulting in a close molecular orientation at interface.The mole-cules of the adducts with short POE chain are dominated both in mixed adsorbed layersand in micelles. The amounts of micelle solubilization of in ethylbenzene may be expre-ssed in linear relation.Detergency performence of mixed solutions of C_(12)E_n with widedistribution in POE chain length is surperior to that of monodispersed or narrow distri-buted C_(12)E_n,but the effect is not noticeable beyond a certain range of distribution.

利用高纯单一十二醇聚乙二醇醚C_(12)E_n摸似配制Gauss分布型混合物,测定其水溶液的表面张力、增溶量及去污率。实验结果表明,聚乙二醇链长不同分布的醇醚混合物属于理想混合。混合溶液的P_?、∏cmc随分布宽度增加而增大。形成表面吸附膜及胶束时,短EO链分子占先。胶束溶液对乙苯的增溶量随分子中EO数增多而增大。宽分布C_(12)F_n的去污率优于窄分布,但在一定分布范围内,其影响不显著。

In this paper the photometric behavior of Al(Fe)-CAB,Al(Fe)-CAS in the presence of mixed surfactants and the feasibility of non-zero isosbestic point in the double-wavelength spectrophotometry have been studied.The present method is successfully applied to the simultaneous determination of Al and Fe.

研究了Al(Fe)-CAS、Al(Fe)-CAB在不同增溶体系中的双波长光度行为,提出了双波长等吸收法中“非零等吸收点”的可用性,并在铝铁同时测定中得到验证。

 
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