Hành Vi Tập Hợp của Hỗn Hợp Axit Perfluorononanoic/Natri Dodecyl Sulfate

María Florencia Torres1, Rita H. de Rossi1, Mariana Adela Fernández1
1Instituto de Investigaciones en Físico-Química de Córdoba (INFIQC), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina

Tóm tắt

Hệ thống hỗn hợp của chất hoạt động bề mặt hydrocarbon anion, natri dodecyl sulfate và chất hoạt động bề mặt perfluorinated, axit perfluorononanoic (PFNA), đã được nghiên cứu bằng sự kết hợp các phương pháp. Nồng độ micelle quan trọng (CMC) đã được xác định trên một khoảng rộng các thành phần mẫu bằng cách sử dụng sức căng bề mặt, độ dẫn điện và quang phổ hấp thụ UV-khả kiến, với N-(4-nitrophenyl)perfluorononanamide làm mẫu phân tử. Các giá trị CMC thu được từ các kỹ thuật khác nhau có sự đồng nhất tốt. Ngoài ra, số lượng tập hợp đã được xác định trong các hỗn hợp có hàm lượng chất hoạt động bề mặt hydrocarbon thấp, bằng cách đo độ phát quang bị suy giảm của pyrene. Bán kính động học của các tập hợp đã được ước tính thông qua phổ NMR 19F- và 1H-NMR theo thứ tự khuếch tán. Các giá trị thu được phù hợp với những giá trị mong đợi dựa trên số lượng tập hợp đã đo. Phân tích dữ liệu với các mô hình tập hợp khác nhau cho thấy sự hình thành một micelle hỗn hợp không lý tưởng, giàu chất hoạt động bề mặt perfluorinated khi phân số mol của nó tăng, và thực tế được hình thành chủ yếu bởi PFNA chỉ khi phân số mol cao hơn 0.8.

Từ khóa

#axit perfluorononanoic #natri dodecyl sulfate #CMC #độ phát quang pyrene #quang phổ NMR

Tài liệu tham khảo

Myers D (1992) Surfactant science and technology. VCH Publishers, New York

Al-Wardian A, Glenn KM, Palepu RM (2004) Thermodynamic and interfacial properties of binary cationic mixed systems. Colloids Surf A 247:115–123

Abe M, Scamehorn JF (eds) (2005) Mixed surfactant systems. Marcel Dekker, New York

Fainerman VB, Lylyk SV, Aksenenko EV, Petkov JT, Yorke J, Miller R (2010) Surface tension isotherms, adsorption dynamics and dilational viscoelasticity of sodium dodecyl sulphate solutions. Colloids Surf A 354:8–15

Mukerjee P, Handa T (1981) Adsorption of fluorocarbon and hydrocarbon surfactants to air-water, hexane-water and perfluorohexane-water interfaces. Relative affinities and fluorocarbon-hydrocarbon nonideality effects. J Phys Chem 85:2298–2303

Kunieda H, Shinoda K (1976) Krafft points, critical micelle concentrations, surface tension, and solubilizing power of aqueous solutions of fluorinated surfactants. J Phys Chem 80:2468–2470

López-Fontán JL, Sarmiento F, Schulz PC (2005) The aggregation of sodium perfluorooctanoate in water. Colloid Polym Sci 283:862–871

Baran JR Jr, Decker EL, Wilcox HN (2002) The pH-dependent surface activity of a hydrocarbon/fluorocarbon catanionic surfactant for water/hydrofluoroether microemulsions: the characterization of a new acid/soap complex. J Dispers Sci Technol 23:23–28

Riess JG (2009) Highly fluorinated amphiphilic molecules and self-assemblies with biomedical potential. Curr Opin Colloid Interface Sci 14:294–304

Patel N, Marlow M, Lawrence MJ (2003) Formation of fluorinated nonionic surfactant microemulsions in hydrofluorocarbon 134a (HFC 134a). J Colloid Interface Sci 258:345–353

Yoshimura T, Ohno A, Esumi K (2004) Mixed micellar properties of cationic trimeric-type quaternary ammonium salts and anionic sodium n-octyl sulfate surfactants. J Colloid Interface Sci 272:191–196

Zhang L, Luo L, Zhao S, Yu J (2002) Studies of synergism/antagonism for lowering dynamic interfacial tensions in surfactant/alkali/acidic oil systems, Part 2: synergism/antagonism in binary surfactant mixtures. J Colloid Interface Sci 251:166–171

Bakshi MS, Kaur G, Ahmad I (2005) Synergistic interactions in mixed micelles of alkyltriphenylphosphonium bromides and triblock polymers. Colloids Surf A 253:1–8

Mukerjee P (1994) Fluorocarbon-hydrocarbon interactions in micelles and other lipids assemblies at interfaces and in solutions. Colloids Surf A 84:1–10

Peyre V (2009) Segregation phenomena in micelles from mixtures of fluorinated and hydrogenated surfactants. Curr Opin Colloid Interface Sci 14:305–314

Mukerjee P, Yang AYS (1976) Nonideality of mixing of micelles of fluorocarbon and hydrocarbon surfactants and evidence of partial miscibility from differential conductance data. J Phys Chem 80:1388–1390

Aratono M, Ikeguchi M, Takiue T, Ikeda N, Motomura K (1995) Thermodynamic study on the miscibility of sodium perfluorooctanoate and sodium decyl sulfate in the adsorbed film and micelle. J Colloid Interface Sci 174:156–161

Harada S, Sahara H (1984) The volumetric behavior of aqueous mixtures of hydrocarbon and fluorocarbon surfactants. Chem Lett 13:1199–1200

Kamogawa K, Tajima K (1993) Distinctive behavior of the ESR correlation times of DOXYL spin probes in mixed micellar solutions of hydrocarbon and fluorocarbon surfactants. J Phys Chem 97:9506–9512

Nordstierna L, Furó I, Stilbs P (2006) Mixed micelles of fluorinated and hydrogenated surfactants. J Am Chem Soc 128:6704–6712

Almgren M, Garamus VM, Nordstierna L, Luc-Blin J, Stébé MJ (2010) Nonideal mixed micelles of fluorinated and hydrogenous surfactants in aqueous solution. NMR and SANS studies of anionic and nonionic systems. Langmuir 26:5355–5363

Granados AM, Fidelio GD, de Rossi RH (1997) Surface and aggregation properties of N-(4-nitrophenyl)perfluorononanamide. Langmuir 13:4079–4084

Basu Ray G, Chakraborty I, Moulik SP (2006) Pyrene absorption can be a convenient method for probing critical micellar concentration (cmc) and indexing micellar polarity. J Colloid Interface Sci 294:248–254

Fernández MA, Granados AM, El Seoud OA, de Rossi RH (2002) Kinetics of surfactant-mediated breakdown of N-(4-nitrophenyl) perfluorononanamide aggregates in aqueous solutions. Langmuir 18:8786–8791

Torres MF, Sales PS, de Rossi RH, Fernández MA (2010) Aggregation behavior of brij-35/perfluorononanoic acid mixtures. Langmuir 26:17858–17866

Aguiar J, Carpena P, Molina-Bolívar JA, Carnero Ruiz C (2003) On the determination of the critical micelle concentration by the pyrene 1:3 ratio method. J Colloid Interface Sci 258:116–122

Nakano TY, Sugihara G, Nakashima T, Yu SC (2002) Thermodynamic study of mixed hydrocarbon/fluorocarbon surfactant system by conductimetric and fluorimetric techniques. Langmuir 18:8777–8785

Turro NJ, Yekta A (1978) Luminescent probes for detergent solutions. A simple procedure for determination of the mean aggregation number of micelles. J Am Chem Soc 100:5951–5952

Almgren M, Swarup S (1982) Size of sodium dodecyl sulfate micelles in the presence of additives. 2. Aromatic and saturated hydrocarbons. J Phys Chem 86:4212–4216

Duplâtre G, Ferreira Marques MF, da Graça Miguel M (1996) Size of sodium dodecyl sulfate micelles in aqueous solutions as studied by positron annihilation lifetime spectroscopy. J Phys Chem 100:16608–16612

Turro NJ, Lee PCC (1982) Perfluorinated “mini” micelles: energy transfer from benzophenone and determination of aggregation number. J Phys Chem 86:3367–3371

Berr SS, Jones RRM (1989) Small-angle neutron scattering from aqueous solutions of sodium perfluorooctanoate above the critical micelle concentration. J Phys Chem 93:2555–2558

Klićic JJ, Fresner RA, Liu S-Y, Guida WC (2002) Accurate prediction of acidity constants in aqueous solution via density functional theory and self-consistent reaction field methods. J Phys Chem A 106:1327–1335

Yang K, Cheng Y, Feng X, Zhang J, Wu Q, Xu T (2010) Insights into the interactions between dendrimers and multiple surfactants: 5. Formation of miscellaneous mixed micelles revealed by a combination of 1H NMR, diffusion and NOE analysis. J Phys Chem B 114:7265–7273

Miyagishi S, Asakawa R, Ohta A (2005) Microscopic phase separation in mixed micellar solutions. In: Abe M, Scamehorn JF (eds) Mixed surfactant systems. Marcel Dekker, New York

Claridge T (2009) High-resolution NMR techniques in organic chemistry (Tetrahedron Organic Chemistry Series, Vol 27), 2nd edn. Elsevier, Amsterdam

Clint JH (1992) Surfactant aggregation. Chapman and Hall, Glasgow, p 131

Holland PM, Rubingh DN (1983) Nonideal multicomponent mixed micelle model. J Phys Chem 87:1984–1990

Barthélémy P, Tomao V, Selb J, Chaudier Y, Pucci B (2002) Fluorocarbon-hydrocarbon nonionic surfactants mixtures: a study of their miscibility. Langmuir 18:2557–2563

Shinoda K, Nomura T (1980) Miscibility of fluorocarbon and hydrocarbon surfactants in micelles and liquid mixtures. Basic studies of oil repellent and fire extinguishing agents. J Phys Chem 84:365–369

Ben Ghoulam M, Moatadid N, Graciaa A, Marion G, Lachaise J (1996) Hydrocarbon/fluorocarbon mixed micelle diagram from surface tensiometry. Langmuir 12:5048–5051

Clapperton RM, Ottewill RH, Ingram BT (1994) A study of fluorocarbon-hydrocarbon surface active agent mixtures by NMR spectroscopy. Langmuir 10:51–56

Mysels KJ, Kapauan P (1961) Electric conductivity of sodium decyl sulfate solutions. J Colloid Sci 16:481–483

Villeneuve M, Nomura T, Matsuki H, Kaneshina S, Aratono M (2001) Miscibility of hydrocarbon and fluorocarbon surfactants in adsorbed film and micelle. J Colloid Interface Sci 234:127–136

Matsuki H, Ikeda N, Aratono M, Kaneshina S, Motomura K (1992) Study on the miscibility of lithium dodecyl sulfate and lithium perfluorooctane sulfonate in the adsorbed film and micelle. J Colloid Interface Sci 150:331–337

Matsuki H, Ikeda N, Aratono M, Kaneshina S, Motomura K (1992) Study on the miscibility of lithium tetradecyl sulfate and lithium perfluorooctane sulfonate in the adsorbed film and micelle. J Colloid Interface Sci 154:454–460

Asakawa T, Ishino S, Hansson P, Almgren M, Ohta A, Miyagishi S (2004) Appearance of pure fluorocarbon micelles surveyed by fluorescence quenching of amphiphilic quinoline derivatives in fluorocarbon and hydrocarbon surfactant mixtures. Langmuir 20:6998–7003

Griffiths PC, Hirst N, Paul A, King SM, Heenan RK, Farley R (2004) Effect of ethanol on the interaction between poly(vinylpyrrolidone) and sodium dodecyl sulfate. Langmuir 20:6904–6913

Zhu L, Feng S (2003) Synergistic solubilization of polycyclic aromatic hydrocarbons by mixed anionic-nonionic surfactants. Chemosphere 53:459–467

Chatterjee A, Moulik SP, Sanyal SK, Mishra BK, Puri PM (2001) Thermodynamics of micelle formation of ionic surfactants: a critical assessment for sodium dodecyl sulfate, cetyl pyridinium chloride and dioctyl sulfosuccinate (Na salt) by microcalorimetric, conductometric, and tensiometric measurements. J Phys Chem B 105:12823–12831