NaCl对支链阳离子表面活性剂表面扩张流变性能的影响
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摘要
为探讨无机盐对阳离子表面活性剂表面扩张流变性质的影响,利用悬挂滴方法研究了不同浓度支链阳离子表面活性剂十六烷基羟丙基季铵盐(C_(16)GPC)的表面扩张流变性质,考察了NaCl浓度对其动态及稳态弹性和黏性模量的影响趋势。结果表明:C_(16)GPC分子中的长支链在界面上的重排慢过程决定纯水溶液表面吸附膜的特性,表面膜以弹性为主,且强度较大,可高达70 mN/m左右;NaCl通过促进扩散交换影响表面膜的性质,少量的NaCl就能明显降低表面弹性和黏性模量。在0.1 Hz条件下,表面弹性和黏性模量只有纯水溶液的1/4左右;高NaCl浓度条件下,扩散交换过程控制表面膜性质,吸附膜以黏性为主。
In order to study the effect of inorganic salt on surface dilational rheological properties of branched cationic surfactant. The surface dilational rheological properties of branched cationic surfactant Guerbet hexadecylglycidyl ether ammonium chloride(C_(16)GPC) were investigated by drop shape analysis. The influences of NaCl concentration on surface dilational elasticity and viscosity were expounded. It is found that the surface slow process involving re-arrangement of long branched alkyl chain determines the nature of adsorption film. The surface adsorption film is elastic in nature with a higher value about 70 mN/m. The addition of NaCl will accelerate the diffusion-exchange process, thereby affects the property of interfacial film. A small amount of NaCl has been shown to decrease sharply the surface dilational elasticity and viscosity to a quarter of their values for pure water at 0.1 Hz.The diffusion-exchange process controls the properties of film at higher NaCl concentration. As a result, the surface adsorption film behaves mainly viscous.
In order to study the effect of inorganic salt on surface dilational rheological properties of branched cationic surfactant. The surface dilational rheological properties of branched cationic surfactant Guerbet hexadecylglycidyl ether ammonium chloride(C_(16)GPC) were investigated by drop shape analysis. The influences of NaCl concentration on surface dilational elasticity and viscosity were expounded. It is found that the surface slow process involving re-arrangement of long branched alkyl chain determines the nature of adsorption film. The surface adsorption film is elastic in nature with a higher value about 70 mN/m. The addition of NaCl will accelerate the diffusion-exchange process, thereby affects the property of interfacial film. A small amount of NaCl has been shown to decrease sharply the surface dilational elasticity and viscosity to a quarter of their values for pure water at 0.1 Hz.The diffusion-exchange process controls the properties of film at higher NaCl concentration. As a result, the surface adsorption film behaves mainly viscous.
引文
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[20]王宜阳,张路,孙涛垒,等.不同结构破乳剂油水界面扩张粘弹性研究[J].物理化学学报,2003,19(4):297-301.WANG Y Y,ZHANG L,SUN T L,et al.Influences of demulsifiers with different structures on dilational properties of decane/water interface[J].Acta Physico-Chimica Sinica,2003,19(4):297-301(in Chinese).
[2]OBERDISSE J,HELLWEG T.Structure,interfacial film properties,and thermal fluctuations of microemulsions as seen by scattering experiments[J].Advances in Colloid and Interface Science,2017,247:354-362.
[3]PENFOLD J,THOMAS R K.Neutron reflectivity and small angle neutron scattering:An introduction and perspective on recent progress[J].Current Opinion in Colloid&Interface Science,2014,19:198-206.
[4]PENFOLD J,THOMAS R K,SHEN H H.Adsorption and selfassembly of biosurfactants studied by neutron reflectivity and small angle neutron scattering:Glycolipids,lipopeptides and proteins[J].Soft Matter,2012,8:578-591.
[5]张磊,王晓春,宫清涛,等.空气/水表面2,5-二丙基-4-十一烷基苯磺酸钠的表面动态扩张流变性质[J].物理化学学报,2007,23,1652-1656.ZHANG L,WANG X C,GONG Q T,et al.Dynamic dilational properties of 2,5-dipropyl-4-undecylbenzene sulfonate at the air/water interface[J].Acta Physico-Chimica Sinica,2007,23,1652-1656(in Chinese).
[6]司友华,靳志强,丰杰,等.大庆原油含氮组分的界面扩张黏弹性质[J].石油学报(石油加工),2011,27(5):737-745.SI Y H,JIN Z Q,FENG J,et al.Interfacial dilational viscoelasticity of nitrogen containing components of Daqing crude oil[J].Acta Petrolei Sinica(Petroleum Processing Section),2011,27(5):737-745(in Chinese).
[7]YOU Y,ZHONG B X,ZHAO J X.Adsorption and micellization of alkanediyl-bis(dimethyldodecylammonium bromide)in isopropyl myristate/aqueous system[J].Colloid and Polymer Science,2010,288(14/15):1359-1367.
[8]HUANG Y P,ZHANG L,ZHANG L,et al.Dynamic interfacial dilational properties of hydroxy-substituted alkyl benzenesulfonates[J].Journal of Physical Chemistry B,2007,111:5640-5647.
[9]FENG J,LIU X P,ZHANG L,et al.The dilational properties of anionic gemini surfactants with polyoxyethylene spacers at water-air and water-decane interfaces[J].Langmuir,2010,26:11907-11914.
[10]王其伟.十六烷基聚氧乙烯醚羟丙基羧酸甜菜碱表面扩张流变研究[J].天津工业大学学报,2013,32(2):46-49.WANG Q W.Study on surface dilational rheology of guerbet alcohol hexadecyl polyoxyethylene glycidyl ether glycine betaine[J].Journal of Tianjin Polytechnic University,2013,32(2):46-49(in Chinese).
[11]郭兰磊,祝仰文,徐志成,等.疏水基支链化对甜菜碱表面扩张流变性质的影响[J].高等学校化学学报,2017,38(8):1399-1405.GUO L L,ZHU Y W,XU Z C,et al.Effect of branched hydrophobic group on the surface dilational rheology of betaine surfactants[J].Chemical Journal of Chinese Universities,2017,38(8):1399-1405(in Chinese).
[12]毛雷霆,齐亚会,孙振东,等.茶皂素的提取及其溶液的表面性质[J].天津工业大学学报,2016,35(5):32-36.MAO L T,QI Y H,SUN Z D,et al.Extraction of tea saponin and surface performance of its solutions[J].Journal of Tianjin Polytechnic University,2016,35(5):32-36(in Chinese).
[13]JARA F,SANCHEZ C C,PATINO J M R,et al.Competitive adsorption behavior of beta-lactoglobulin,alpha-lactalbumin,bovin serum albumin in presence of hydroxypropylmethyl cellulose,influence of pH[J].Food Hydrocolloids,2014,35:189-197.
[14]KEZWON A,CHROMINSKA I,FRACZYK T,et al.Effect of enzymatic hydrolysis on surface activity and surface rheology of type I collagen[J].Colloids and Surfaces B-Biointerfaces,2016,137:60-69.
[15]SALONEN A,IN M,EMILE J,et al.Solutions of surfactant oligomers:A model system for tuning foam stability by the surfactant structure[J].Soft Matter,2010,6(10):2271-2281.
[16]WANG J,YANG F,TAN J J,et al.Pickering emulsions stabilized by a lipophilic surfactant and hydrophilic platelike particles[J].Langmuir,2010,26(8):5397-5404.
[17]徐志成.新型阳离子和两性离子表面活性剂的合成及理化性质的研究[D].北京:中国科学院,2009.XU Z C.Study on the synthesis and physicochemical properties of novel cationic and zwitterionic surfactants[D].Beijing:Chinese Academy of Sciences,2009(in Chinese).
[18]LYADINSKAYA V V,LIN S Y,MICHAILOV A V,et al.Phase transitions in DNA/surfactant adsorption layers[J].Langmuir,2016,32(50):13435-13445.
[19]SONG X W,ZHANG L,CAO X L,et al.Surface dilational rheological and lamella properties of branched alkyl benzene sulfonate solutions[J].Colloids and Surfaces A,2012,412:64-71.
[20]王宜阳,张路,孙涛垒,等.不同结构破乳剂油水界面扩张粘弹性研究[J].物理化学学报,2003,19(4):297-301.WANG Y Y,ZHANG L,SUN T L,et al.Influences of demulsifiers with different structures on dilational properties of decane/water interface[J].Acta Physico-Chimica Sinica,2003,19(4):297-301(in Chinese).
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