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Lin X, Zhang X, Xu B. Differences in physicochemical, rheological, and prebiotic properties of inulin isolated from five botanical sources and their potential applications. Food Res Int 2024; 180:114048. [PMID: 38395565 DOI: 10.1016/j.foodres.2024.114048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 02/25/2024]
Abstract
This study compares the physicochemical and prebiotic properties of inulin isolated from five botanical sources. The average degree of polymerization (DP) for inulin ranged from 5.00 to 13.33. Notably, inulin from Dahlia tubers (DP = 13) and Platycodonis Radix (DP = 8) demonstrated granular, clustered morphology under SEM, semi-crystalline structures via X-ray diffraction, and exhibited shear-thinning behaviors from shear rate 1 s-1 to 500 s-1. In contrast, inulin from Jerusalem artichoke (DP = 5), chicory root (DP = 7), and Asparagi Radix (DP = 5) showcased rough flake morphologies under SEM, amorphous structures in X-ray patterns, and similar shear-thinning behaviors. All inulin types showed acid stability at pH levels below 2.0, with a reducing sugar conversion ratio (RRS) under 1 %. Furthermore, the isolated inulin from the different sources presented prebiotic capacity when added as a sole carbon source in the culture media of the probiotics Lactobacillus paracasei and Bifidobacterium longum. This study provides the properties of inulin from various sources, thereby offering a reference for the selection of appropriate inulin in industrial applications based on the desired characteristics of the final product.
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Affiliation(s)
- Xiaojun Lin
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai, Guangdong 519087, China
| | - Xuanyi Zhang
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai, Guangdong 519087, China
| | - Baojun Xu
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai, Guangdong 519087, China.
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2
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Synergistic and antagonistic effects in micellization of mixed surfactants. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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An Overview of Coacervates: The Special Disperse State of Amphiphilic and Polymeric Materials in Solution. COLLOIDS AND INTERFACES 2022. [DOI: 10.3390/colloids6030045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Individual amphiphiles, polymers, and colloidal dispersions influenced by temperature, pH, and environmental conditions or interactions between their oppositely charged pairs in solvent medium often produce solvent-rich and solvent-poor phases in the system. The solvent-poor denser phase found either on the top or the bottom of the system is called coacervate. Coacervates have immense applications in various technological fields. This review comprises a concise introduction, focusing on the types of coacervates, and the influence of different factors in their formation, structures, and stability. In addition, their physicochemical properties, thermodynamics of formation, and uses and multifarious applications are also concisely presented and discussed.
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4
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Pal T, Sahu K. Comparison of interaction patterns of a triblock copolymer micelle with zwitterionic vs. cationic surfactant: An excited-state proton transfer dynamics investigation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Detailed physicochemical interaction of inulin with some conventional surfactants and surface active ionic liquid. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Yang J, Pal R. Investigation of Surfactant-Polymer Interactions Using Rheology and Surface Tension Measurements. Polymers (Basel) 2020; 12:polym12102302. [PMID: 33050048 PMCID: PMC7599985 DOI: 10.3390/polym12102302] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 02/05/2023] Open
Abstract
The interactions between surfactants and a drag-reducing polymer were investigated at a low polymer concentration of 500 ppm, using measurements of the rheology and surface activity of surfactant-polymer solutions. A well-known drag-reducing polymer (anionic sodium carboxymethyl cellulose) and five different surfactants (two anionic, two non-ionic, and one zwitterionic) were selected for the interaction studies. The surfactant-polymer solutions were shear thinning in nature, and they followed the power law model. The interaction between the surfactant and polymer had a strong effect on the consistency index of the solution and a marginal effect on the flow behavior index. The surface tension versus surfactant concentration plots were interpreted in terms of the interactions between surfactant and polymer. The critical aggregation concentration (CAC) of the surfactant was estimated based on the surface tension and rheological data. The CAC values of the same charge surfactants as that of the polymer were found to be significantly higher than other combinations of surfactant and polymer, such as non-ionic surfactant/anionic polymer, and zwitterionic surfactant/anionic polymer.
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Affiliation(s)
| | - Rajinder Pal
- Correspondence: ; Tel.: +1-519-888-4567 (ext. 32985)
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Faustino C, Martins T, Duarte N, Ribeiro MH. Self‐Assembly of Lipoaminoacids‐DNA Based on Thermodynamic and Aggregation Properties. J SURFACTANTS DETERG 2020. [DOI: 10.1002/jsde.12391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Célia Faustino
- Faculty of PharmacyResearch Institute for Medicines (iMed.ULisboa), Universidade de Lisboa Av. Prof. Gama Pinto 1649‐003 Lisbon Portugal
| | - Tiago Martins
- Faculty of PharmacyResearch Institute for Medicines (iMed.ULisboa), Universidade de Lisboa Av. Prof. Gama Pinto 1649‐003 Lisbon Portugal
| | - Noélia Duarte
- Faculty of PharmacyResearch Institute for Medicines (iMed.ULisboa), Universidade de Lisboa Av. Prof. Gama Pinto 1649‐003 Lisbon Portugal
| | - Maria H. Ribeiro
- Faculty of PharmacyResearch Institute for Medicines (iMed.ULisboa), Universidade de Lisboa Av. Prof. Gama Pinto 1649‐003 Lisbon Portugal
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Hao LS, Xiao K, Hu Y, Zhang SS, Liu JX, Wei YY, Chen Y, Nan YQ. Mixed Micellization of Cationic/Anionic Surfactants: Role of Matching Water Affinities between Oppositely Charged Headgroups and That between Oppositely Charged Constituent Counterions. J Phys Chem B 2019; 123:8140-8153. [DOI: 10.1021/acs.jpcb.9b05982] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li-Sheng Hao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Kai Xiao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yan Hu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Sha-Sha Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Jian-Xiu Liu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yuan-Yuan Wei
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yue Chen
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
| | - Yan-Qing Nan
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
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Sachin KM, Karpe SA, Singh M, Bhattarai A. Self-assembly of sodium dodecylsulfate and dodecyltrimethylammonium bromide mixed surfactants with dyes in aqueous mixtures. ROYAL SOCIETY OPEN SCIENCE 2019; 6:181979. [PMID: 31032045 PMCID: PMC6458362 DOI: 10.1098/rsos.181979] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 03/01/2019] [Indexed: 05/20/2023]
Abstract
The micellar property of mixed surfactant systems, cationic (dodecyltrimethylammonium bromide, DTAB) and anionic (sodium dodecylsulfate, SDS) surfactants with variable molar ratios in aqueous system has been reported by using surface tension and conductivity measurements at T = 293.15, 298.15 and 303.15 K. DTAB concentrations are varied from 1.0 × 10-4 to 3 × 10-4 mol l-1 in 1.0 × 10-2 mol l-1 SDS solution while the SDS concentration is varied from 1.0 × 10-3 to 1.5 × 10-2 mol l-1 in approximately 5.0 × 10-3 mol l-1 DTAB, so that such concentrations of DTAB-SDS (DTAB-rich) and SDS-DTAB (SDS-rich) solutions were chosen 3 : 1 ratio. The critical micellar concentration, as well as surface and thermodynamic properties for DTAB-rich and SDS-rich solutions, were evaluated by the surface tension (γ) and conductivity (κ) methods. The pseudo phase separation model was coupled with the dissociated Margules model for synergism. The Krafft temperature behaviour and optical analysis of mixed surfactants are studied using conductivity and UV-Vis spectroscopy, respectively. The dispersibility and stability of DTAB-rich and SDS-rich solutions with and without dyes (2.5 × 10-5 mol l-1 of methyl orange and methylene blue) are carried out by using UV-Vis spectroscopy and dynamic light scattering.
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Affiliation(s)
- K. M. Sachin
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, India
| | - Sameer A. Karpe
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, India
| | - Man Singh
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, India
| | - Ajaya Bhattarai
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar, India
- Department of Chemistry, Tribhuvan University, M. M. A. M. Campus, Biratnagar, Nepal
- Author for correspondence: Ajaya Bhattarai e-mail:
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Pal A, Yadav S. Effect of cationic polyelectrolyte poly(diallyldimethylammonium chloride) on micellization behavior of anionic surface active ionic liquid 1-butyl-3-methylimidazolium dodecylsulfate [C4mim][C12SO4] in aqueous solutions. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4379-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Maharana S, Misra PK. Probing the Gelatin-Alkylammonium Salt Mixed Assemblies through Surface Tensiometry and Fluorimetry. J Phys Chem B 2018; 122:5161-5172. [PMID: 29697987 DOI: 10.1021/acs.jpcb.8b00338] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The interactions, nature of the organization, and physicochemical properties of alkyltrimethylammonium bromide (C nTAB, n = 12, 14, and 16)-gelatin mixed assemblies were investigated by UV-visible spectrometry, surface tensiometry, and fluorimetry techniques. The synergistic interaction between the surfactant and gelatin was established from the decrease in critical micellar concentration (cmc) and the increase in molecular parking area of surfactants with an increase in percentage of gelatin from 0 to 0.4%; for example, the cmc of C16TAB decreased from 0.93 mM in water to 0.44 mM in the presence of 0.4% gelatin, whereas its Amin increased from 134.98 to 325.55 Å2. The fluorescence anisotropy data and polarity parameters of pyrene indicated the progressive change in the anisotropy and micropolarity of the mixed system media with gelatin percentage, respectively. The decrease in aggregation number with an increase in gelatin concentration can be attributed to the enhanced compatibility of surfactants with the bulk microenvironment. The maximum rigidity of the mixed system was also significant from the lifetime data of tyrosine. The formation of Menger micelles on gelatin segments was supported by surface tension and anisotropy data. The overall observations can be attributed to the formation of micelles via gelatin-surfactant aggregates; gelatin segments are localized within the microdomain of these aggregates.
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Affiliation(s)
- Suprava Maharana
- Centre of Studies in Surface Science and Technology, School of Chemistry , Sambalpur University , Jyoti Vihar , 768019 Sambalpur , Odisha , India
| | - Pramila K Misra
- Centre of Studies in Surface Science and Technology, School of Chemistry , Sambalpur University , Jyoti Vihar , 768019 Sambalpur , Odisha , India
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12
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Alam MS, Mohammed Siddiq A, Mandal AB. Effects of Fructose and Temperature on the Micellization of a Cationic Gemini Surfactant, Pentanediyl-1,5-bis(dimethylcetylammonium) Bromide in Aqueous Solutions. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024417130167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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The effect of the presence of Sodium bis-(2-ethylhexyl) sulfosuccinate (AOT) on the interactions between Sodium dodecyl sulfate (SDS) and protein papain. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.10.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Singh O, Singla P, Kaur R, Mahajan RK. Tailoring the interfacial and bulk behavior of ionic-liquids with non surface active drug diclofenac sodium. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.04.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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15
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Zhao W, Wang Y. Coacervation with surfactants: From single-chain surfactants to gemini surfactants. Adv Colloid Interface Sci 2017; 239:199-212. [PMID: 27260407 DOI: 10.1016/j.cis.2016.04.005] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/12/2016] [Indexed: 10/21/2022]
Abstract
Coacervation is a spontaneous process during which a colloidal dispersion separates into two immiscible liquid phases: a colloid-rich liquid phase in equilibrium with a diluted phase. Coacervation is usually divided into simple coacervation and complex coacervation according to the number of components. Surfactant-based coacervation normally contains traditional single-chain surfactants. With the development of surfactants, gemini surfactants with two amphiphilic moieties have been applied to form coacervation. This review summarizes the development of simple coacervation and complex coacervation in the systems of single-chain surfactants and gemini surfactants. Simple coacervation in surfactant solutions with additives or at elevated temperature and complex coacervation in surfactant/polymer mixtures by changing charge densities, molecular weight, ionic strength, pH, or temperature are reviewed. The comparison between gemini surfactants and corresponding monomeric single-chain surfactants reveals that the unique structures of gemini surfactants endow them with higher propensity to generate coacervation.
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16
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Shah RA, Chat OA, Maswal M, Rather GM, Dar AA. Rheological response of methylcellulose toward alkanediyl-α,ω-bis(dimethylcetylammonium bromide) surfactants with varying spacer length. Carbohydr Polym 2016; 144:159-67. [DOI: 10.1016/j.carbpol.2016.02.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 02/12/2016] [Accepted: 02/17/2016] [Indexed: 10/22/2022]
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17
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Alam MS, Ragupathy R, Mandal AB. Self-Association, Mixed Micellization, and Thermodynamic Studies of Sodium Dodecyl Sulfate (SDS) and Hexanediyl-1,6-Bis(Dimethylcetylammonium Bromide) (16-6-16). J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2016.1138228] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Md. Sayem Alam
- Industrial Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) – Central Leather Research Institute (CLRI), Adyar, Chennai, India
- Academy of Scientific and Innovative Research (AcSIR), Discipline: Chemical Sciences, New Delhi, India
| | - R. Ragupathy
- Chemical Laboratory, Council of Scientific and Industrial Research (CSIR) – Central Leather Research Institute (CLRI), Adyar, Chennai, India
| | - Asit Baran Mandal
- Industrial Chemistry Laboratory, Council of Scientific and Industrial Research (CSIR) – Central Leather Research Institute (CLRI), Adyar, Chennai, India
- Chemical Laboratory, Council of Scientific and Industrial Research (CSIR) – Central Leather Research Institute (CLRI), Adyar, Chennai, India
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Alam MS, Siddiq AM, Mandal AB. Thermodynamic and micellization studies of a cationic gemini surfactant 16-6-16: Influence of ascorbic acid and temperature. COLLOID JOURNAL 2016. [DOI: 10.1134/s1061933x16010026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Das S, Mondal S, Ghosh S. Interaction of cationic gemini surfactant tetramethylene-1,4-bis(dimethyltetradecylammonium bromide) with anionic polyelectrolyte sodium carboxymethyl cellulose, with two different molar masses, in aqueous and aquo-organic (isopropanol) media. RSC Adv 2016. [DOI: 10.1039/c6ra00640j] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Interactions of the cationic gemini surfactant, 14-4-14 with anionic polymer, NaCMC.
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Affiliation(s)
- Sibani Das
- Centre for Surface Science
- Department of Chemistry
- Jadavpur University
- Kolkata – 700032
- India
| | - Satyajit Mondal
- Centre for Surface Science
- Department of Chemistry
- Jadavpur University
- Kolkata – 700032
- India
| | - Soumen Ghosh
- Centre for Surface Science
- Department of Chemistry
- Jadavpur University
- Kolkata – 700032
- India
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Alam MS, Ragupathy R, Mandal AB. The Self-Association and Mixed Micellization of an Anionic Surfactant, Sodium Dodecyl Sulfate, and a Cationic Surfactant, Cetyltrimethylammonium Bromide: Conductometric, Dye Solubilization, and Surface Tension Studies. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2015.1120677] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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21
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Physicochemical study of the interaction of lysozyme with surface active ionic liquid 1-butyl-3-methylimidazolium octylsulfate [BMIM] [OS] in aqueous and buffer media. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.07.052] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Alam MS, Mohammed Siddiq A, Mythili V, Priyadharshini M, Kamely N, Mandal AB. Effect of organic additives and temperature on the micellization of cationic surfactant cetyltrimethylammonium chloride: Evaluation of thermodynamics. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.09.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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23
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Das S, Mukherjee I, Paul BK, Ghosh S. Physicochemical behaviors of cationic gemini surfactant (14-4-14) based microheterogeneous assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:12483-12493. [PMID: 25241843 DOI: 10.1021/la5025923] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A comprehensive study of micellization and microemulsion formation of a cationic gemini surfactant (tetramethylene-1,4-bis(dimethyltetradecylammonium bromide; 14-4-14) in the absence or presence of hydrophobically modified polyelectrolyte, sodium carboxymethylcellulose (NaCMC), has been conducted by conductometry, tensiometry, microcalorimetry, and fluorimetry methods at different temperatures. Both critical micelle concentration and degree of ionization of the surfactant have been observed to increase with increasing temperature. The interfacial and thermodynamic parameters were evaluated. The standard Gibbs free energy of micellization (ΔGm°) is negative, which decreases with increase in temperature. Larger entropic contribution is observed compared to the enthalpy. The interaction of 14-4-14 with NaCMC produces coacervates which was determined from turbidimetry method. The pseudoternary phase behavior of the microemulsion systems comprising water (or NaCMC as additive), 14-4-14, isopropanol (IP) or n-butanol (Bu) as cosurfactant, and isopropyl myristate (IPM) were studied at 298 K. Phase diagrams reveal that IP derived microemulsions (in the absence of NaCMC) offer a large isotropic region compared to Bu-derived systems at comparable physicochemical conditions. Increasing the concentration of IP or Bu decreases the isotropic region in the phase diagram. NaCMC influences the microemulsion zone, depending upon its concentration, and type of cosurfactant and surfantant/cosurfactant ratio. Dynamic light scattering and conductometric measurements show the size of the droplet, threshold temperature of percolation, scaling parameters, and activation energy of the percolation process of 14-4-14/IP or Bu derived microemulsion systems without/with NaCMC at various physicochemical conditions. Bu exerts a greater effect to reduce θt than IP as a cosurfactant (in the absence of NaCMC) at comparable ω. On the other hand, IP showed better percolating effect than Bu in the presence of NaCMC. Bu and IP (as cosurfactant) and NaCMC (as additive) influenced the microemulsion droplet size (Dh) to different extents under comparable conditions. Temperature insensitive microemulsions have been reported at the studied temperature range (298–353 K). 14-4-14/IP (1:2)-derived microemulsion showed a fractured surface at fixed ω = 15, where ω is the water and surfactant molar ratio, and temperature (298 K); whereas, large scale mesospheres comprising multiple closely winded nanoslices and spheroid morphology were formed in 14-4-14/IP and 14-4-14/Bu microemulsions, respectively, in the presence of 0.01 g % NaCMC, at comparable conditions. These systems revealed good antimicrobial activity toward the strains of Gram-positive Bacillus subtilis and Gram-negative Escherichia coli bacteria at 298 K, and inhibitory effect was governed by ω, type of cosurfactant, and bacterial strains.
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Affiliation(s)
- Sibani Das
- Centre for Surface Science, Department of Chemistry, Jadavpur University , Kolkata 700 032, India
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Alam MS, Siddiq AM, Kamely N, Keerthi M, Maeshwari RU, Mandal AB. Micellization Behavior of a Cationic Gemini Surfactant, Pentanediyl-1,5-Bis(Dimethylcetylammonium Bromide): Effect of Asparagine and Temperature. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.956117] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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25
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Alam MS, Kamely N, Siddiq AM, Madhavan K, Vijayakumar N, Nareshkumar V, Mandal AB. Effect of Dextrose and Temperature on the Micellization of Cationic Gemini Surfactant (16-6-16). J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.945178] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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26
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Study of interaction between cationic surfactants and cresol red dye by electrical conductivity and spectroscopy methods. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.04.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Li D, Wagner NJ. Universal binding behavior for ionic alkyl surfactants with oppositely charged polyelectrolytes. J Am Chem Soc 2013; 135:17547-55. [PMID: 24160889 DOI: 10.1021/ja408587u] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Oppositely charged polyelectrolyte-surfactant mixtures are ubiquitous in biology and the basis of numerous consumer healthcare products. Despite their broad use, however, a rational approach to their formulation remains challenging because of the complicated association mechanisms. Through compilation and analysis of literature reports and our own research, we have developed a semiempirical correlation of the binding strength of surfactants to polyelectrolytes in salt-free mixtures as a function of the polyion linear charge density and the surfactant hydrophobicity. We have found that the cooperative binding strength increases as the square of the polyelectrolyte's linear charge density and in proportion to the surfactant's hydrophobicity, such that a quantitative relationship holds across a broad range of polyelectrolytes. Deviations from the correlation reveal the role of system-specific interactions not considered in the analysis. This engineering relationship aids in the rational design of oppositely charged polyelectrolyte-surfactant formulations for consumer products and biomedicines by enabling the prediction of binding strengths in polyelectrolyte-surfactant mixtures based on mesoscale parameters determined from the chemical composition.
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Affiliation(s)
- Dongcui Li
- Center for Neutron Science, Center for Molecular and Engineering Thermodynamics, Department of Chemical & Biomolecular Engineering, University of Delaware , Newark, Delaware 19716, United States
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Naskar B, Ghosh S, Moulik SP. Interaction of normal and reverse pluronics (L44 and 10R5) and their mixtures with anionic surfactant sodium N-dodecanoylsarcosinate. J Colloid Interface Sci 2013; 414:82-9. [PMID: 24231088 DOI: 10.1016/j.jcis.2013.10.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 10/01/2013] [Accepted: 10/03/2013] [Indexed: 11/17/2022]
Abstract
Interaction of monomeric normal L44 [(PEO)10(PPO)23(PEO)10]) and reverse 10R5 [(PPO)8(PEO)22(PPO)8] pluronics designated as L and R, respectively, and their mixtures with the anionic surfactant sodium N-dodecanoylsarcosinate (SDDS) in aqueous medium has been studied by tensiometry, conductometry, calorimetry and dynamic light scattering methods. The critical aggregation concentration (CAC), concentration of maximum binding (CS), and the extended critical micelle concentration (CMCe) of SDDS resulted from the interaction have been presented. L has shown the formation of CAC, CS and CMCe, whereas R has shown the absence of CAC but the presence of both CS and CMCe. Micellization of SDDS is an endothermic process whereas the formation of CAC and CMCe is exothermic events, the formation of CS is endothermic. The hydrodynamic diameter (Dh) and zeta potential of L and R, and their SDDS interacted species have been determined. Dh decreased with increasing SDDS concentration for L whereas it was invariant for R. Mixed L and R in varied proportions have been also examined in the solution state to probe into their mutual interaction, and interaction with SDDS. The formation of CAC of their mixtures was absent; CMCe formation was exothermic while that of CS was endothermic like their individuals.
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Affiliation(s)
- Bappaditya Naskar
- Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700032, India
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29
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Mixed Micellar and Interfacial Interactions of a Triblock Polymer (EO37PO56EO37) with a Series of Monomeric and Dimeric Surfactants. J SURFACTANTS DETERG 2013. [DOI: 10.1007/s11743-013-1516-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Mohsenipour AA, Pal R. SYNERGISTIC EFFECTS OF ANIONIC SURFACTANT AND NONIONIC POLYMER ADDITIVES ON DRAG REDUCTION. CHEM ENG COMMUN 2013. [DOI: 10.1080/00986445.2012.731661] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Effect of inorganic salts on the clouding behavior of hydroxypropyl methyl cellulose in presence of amphiphilic drugs. Colloids Surf B Biointerfaces 2013; 103:496-501. [DOI: 10.1016/j.colsurfb.2012.10.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 10/13/2012] [Accepted: 10/15/2012] [Indexed: 11/22/2022]
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32
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Mohsenipour AA, Pal R. The Role of Surfactants in Mechanical Degradation of Drag-Reducing Polymers. Ind Eng Chem Res 2013. [DOI: 10.1021/ie3024214] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | - Rajinder Pal
- Department of Chemical Engineering, University of Waterloo, Ontario N2L 3G1, Canada
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33
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Mondal S, Ghosh S. Role of curcumin on the determination of the critical micellar concentration by absorbance, fluorescence and fluorescence anisotropy techniques. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 115:9-15. [DOI: 10.1016/j.jphotobiol.2012.06.004] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 06/09/2012] [Accepted: 06/11/2012] [Indexed: 11/24/2022]
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34
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Tao J, Yang HY, Hao X, Xie YJ, Li HY. Effect of ortho-methoxycinnamic acid on the sol-gel transition of methylcellulose solutions in the presence of cetyltrimethylammonium bromide. CHINESE JOURNAL OF POLYMER SCIENCE 2012. [DOI: 10.1007/s10118-013-1197-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Rawat K, Bohidar HB. Universal Charge Quenching and Stability of Proteins in 1-Methyl-3-alkyl (Hexyl/Octyl) Imidazolium Chloride Ionic Liquid Solutions. J Phys Chem B 2012; 116:11065-74. [DOI: 10.1021/jp3049108] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kamla Rawat
- Polymer and Biophysics Laboratory, School of Physical
Sciences, Jawaharlal Nehru University,
New Delhi 110067, India
| | - H. B. Bohidar
- Polymer and Biophysics Laboratory, School of Physical
Sciences, Jawaharlal Nehru University,
New Delhi 110067, India
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36
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Micellization and clouding phenomenon of amphiphilic antidepressant drug amitriptyline hydrochloride: Effect of KCl. Colloids Surf B Biointerfaces 2012; 92:203-8. [DOI: 10.1016/j.colsurfb.2011.11.041] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Revised: 11/21/2011] [Accepted: 11/22/2011] [Indexed: 12/22/2022]
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37
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Alam MS, Mandal AB. Thermodynamic studies on mixed micellization of amphiphilic drug amitriptyline hydrochloride and nonionic surfactant Triton X-100. J Mol Liq 2012. [DOI: 10.1016/j.molliq.2012.01.014] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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38
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Imran S, Gillis RB, Kok SM, Harding SE, Adams GG. Application and use of Inulin as a tool for therapeutic drug delivery. Biotechnol Genet Eng Rev 2012; 28:33-45. [DOI: 10.5661/bger-28-33] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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39
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Mohsenipour AA, Pal R. Drag reduction in turbulent pipeline flow of mixed nonionic polymer and cationic surfactant systems. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.21618] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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40
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Mohsenipour AA, Pal R, Prajapati K. Effect of cationic surfactant addition on the drag reduction behaviour of anionic polymer solutions. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20686] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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41
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Panchev I, Delchev N, Kovacheva D, Slavov A. Physicochemical characteristics of inulins obtained from Jerusalem artichoke (Helianthus tuberosus L.). Eur Food Res Technol 2011. [DOI: 10.1007/s00217-011-1584-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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42
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Naskar B, Ghosh S, Nagadome S, Sugihara G, Moulik SP. Behavior of the amphiphile CHAPS alone and in combination with the biopolymer inulin in water and isopropanol-water media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:9148-9159. [PMID: 21667919 DOI: 10.1021/la201119c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Self-aggregation of the zwitterionic surfactant 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate (CHAPS) in water and isopropanol-water media, and interaction of the amphiphile with the biopolymer inulin in these media were investigated. The micellar properties of the zwitterionic surfactant and its associated interfacial and bulk properties along with the related energetic, and aggregation number were determined. The different stages of interaction of the CHAPS-inulin combines were identified and assessed. The complexes were formed and aggregated in solution at different stages of their molecular compositions. The aggregated sizes were determined by dynamic light scattering study and the morphology in the solvent removed states were examined using scanning electron microscope and transmission electron microscope techniques. The results witnessed formation of ensembles of varied and striking patterns.
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Affiliation(s)
- Bappaditya Naskar
- Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700032, India
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43
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Mukherjee S, Dan A, Bhattacharya SC, Panda AK, Moulik SP. Physicochemistry of interaction between the cationic polymer poly(diallyldimethylammonium chloride) and the anionic surfactants sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, and sodium N-dodecanoylsarcosinate in water and isopropyl alcohol-water media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5222-33. [PMID: 21466231 DOI: 10.1021/la200033x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The physicochemistry of interaction of the cationic polymer poly(diallyldimethylammonium chloride) (PDADMAC) with the anionic surfactants sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, and sodium N-dodecanoylsarcosinate was studied in detail using tensiometry, turbidimetry, calorimetry, viscometry, dynamic light scattering (DLS), and scanning electron microscopy (SEM). Fair interaction initially formed induced small micelles of the surfactants and later on produced free normal micelles in solution. The interaction process yielded coacervates that initially grew by aggregation in the aqueous medium and disintegrated into smaller species at higher surfactant concentration. The phenomena observed were affected by the presence of isopropyl alcohol (IP) in the medium. The hydrodynamic sizes of the dispersed polymer and its surfactant-interacted species were determined by DLS measurements. The surface morphologies of the solvent-removed PDADMAC and its surfactant-interacted complexes from water and IP-water media were examined by the SEM technique. The morphologies witnessed different patterns depending on the composition and the solvent environment. The head groups of the dodecyl chain containing surfactants made differences in the interaction process.
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Affiliation(s)
- Suvasree Mukherjee
- Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata-700032, West Bengal, India
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44
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Villetti MA, Bica CID, Garcia ITS, Pereira FV, Ziembowicz FI, Kloster CL, Giacomelli C. Physicochemical properties of methylcellulose and dodecyltrimethylammonium bromide in aqueous medium. J Phys Chem B 2011; 115:5868-76. [PMID: 21517042 DOI: 10.1021/jp110247r] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Interactions between uncharged polymers and cationic surfactants are considered weaker than interactions with the anionic analogues. This work describes the binding occurring between methylcellulose (MC) and the cationic surfactant DTAB in aqueous medium. In the absence of salt, MC-DTAB exhibits a maximum in hydrodynamic radius, R(h,slow), with the increase in the surfactant concentration. Otherwise, in presence of salt the MC-DTAB system shows only a linear increase of R(h,slow). CAC is lower than the CMC, which is taken as an evidence of binding between the cationic surfactant and neutral polymer that induces the aggregation process. Static light scattering, rheology and micro-DSC results highlight the hydrophobic MC-DTAB association. Salt-out and the salt-in effects were observed in presence of DTAB, with a clear transition at concentration values close to the CMC, as judged from rheological and micro DSC measurements. Indeed, DTAB affects both the pattern of the sol-gel transition and the gel strength.
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Affiliation(s)
- Marcos A Villetti
- Departamento de Física, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil.
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45
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Roy S, Maiti K, Moulik SP, Ghosh R. Synthesis of C14- and C16-carbon chain containing mannitol diester and diether based non-ionic amphiphiles and studies of their Langmuir monolayer films at the air/water interface. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.01.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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46
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Mukherjee I, Sarkar D, Moulik SP. Interaction of gums (guar, carboxymethylhydroxypropyl guar, diutan, and xanthan) with surfactants (DTAB, CTAB, and TX-100) in aqueous medium. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:17906-17912. [PMID: 21033684 DOI: 10.1021/la102717v] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The interaction of surfactants dodecyltrimethylammonium bromide (DTAB), cetyltrimethylammonium bromide (CTAB), and p-tert-octylphenoxypolyoxyethylene (9.5) ether (TX-100) with guar (Gr), carboxymethylhydroxypropyl guar (CMHPG), diutan (Dn), and xanthan (Xn) gums has been studied employing conductometry, tensiometry, microcalorimetry, viscometry, and atomic force microscopy (AFM) techniques. Both weak and strong interactions were observed. CTAB interacted stronger than DTAB with the gums. The surfactant-gum interaction process was enhanced by the presence of borate ions in the solution; the borate ion itself also manifested interaction with the surfactants comparable with that of water-soluble polymers polyvinyl alcohol, polyoxyethylene, and so forth. Viscometric results supported configurational changes of the gum molecules by interaction with surfactants. The geometry of the pure gums and their CTAB interacted products in the dried states was ascertained from AFM measurements; spherical and prolate shapes were observed for pure gums, and distorted states were observed for their surfactant complexed species. Detailed topological features of these entities were ascertained.
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Affiliation(s)
- Indrajyoti Mukherjee
- Center for Surface Science, Department of Chemistry, Jadavpur University, Kolkata 700032, India
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47
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Barbosa AM, Santos IJB, Ferreira GMD, Hespanhol da Silva MDC, Teixeira ÁVNDC, da Silva LHM. Microcalorimetric and SAXS Determination of PEO−SDS Interactions: The Effect of Cosolutes Formed by Ions. J Phys Chem B 2010; 114:11967-74. [DOI: 10.1021/jp1032178] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Aparecida Mageste Barbosa
- Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química and Departamento de Física, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Avenida P. H. Rolfs, Viçosa, MG, 36570-000, Brazil
| | - Igor José Boggione Santos
- Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química and Departamento de Física, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Avenida P. H. Rolfs, Viçosa, MG, 36570-000, Brazil
| | - Guilherme Max Dias Ferreira
- Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química and Departamento de Física, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Avenida P. H. Rolfs, Viçosa, MG, 36570-000, Brazil
| | - Maria do Carmo Hespanhol da Silva
- Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química and Departamento de Física, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Avenida P. H. Rolfs, Viçosa, MG, 36570-000, Brazil
| | - Álvaro Vianna Novaes de Carvalho Teixeira
- Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química and Departamento de Física, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Avenida P. H. Rolfs, Viçosa, MG, 36570-000, Brazil
| | - Luis Henrique Mendes da Silva
- Grupo de Química Verde Coloidal e Macromolecular, Departamento de Química and Departamento de Física, Centro de Ciências Exatas e Tecnológicas, Universidade Federal de Viçosa, Avenida P. H. Rolfs, Viçosa, MG, 36570-000, Brazil
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48
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Singh T, Boral S, Bohidar HB, Kumar A. Interaction of Gelatin with Room Temperature Ionic Liquids: A Detailed Physicochemical Study. J Phys Chem B 2010; 114:8441-8. [DOI: 10.1021/jp102419f] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Tejwant Singh
- Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India and Polymer and Biophysics Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110 067, India
| | - Shilpi Boral
- Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India and Polymer and Biophysics Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110 067, India
| | - H. B. Bohidar
- Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India and Polymer and Biophysics Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110 067, India
| | - Arvind Kumar
- Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India and Polymer and Biophysics Laboratory, School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110 067, India
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49
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Behavior of papain in mixed micelles of anionic-cationic surfactants having similar tails and dissimilar head groups. J Colloid Interface Sci 2010; 344:105-11. [PMID: 20074744 DOI: 10.1016/j.jcis.2009.12.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Revised: 12/16/2009] [Accepted: 12/17/2009] [Indexed: 11/24/2022]
Abstract
The mixed micellar behavior of anionic surfactant, sodium dodecylsulfate (SDS) and cationic surfactant, dodecylethyldimethylammonium bromide (DDAB) at varying mole fractions of DDAB, i.e. alpha(DDAB) in aqueous solution of papain has been investigated with the aid of spectroscopy and physiochemical measurements. Thermodynamic parameters have been computed over the entire mole fraction range of DDAB. The Clint equation and the regular approximation method have been used to investigate the interactions between mixed surfactants in the presence of protein. The two surfactants have similar tails, however, the charges on respective polar head groups are expected to have significant effect on their colloidal behavior. The cmc values of mixed surfactants have been estimated from fluorescence, conductivity, surface tension, ultrasonic speed and density measurements. The results show that lower and higher mole fractions of DDAB give negative departure from ideality whereas intermediate mole fractions have positive deviation. The aggregation number, N(agg) of mixed micelles has also been calculated. The turbidity or cloudiness at intermediate mole fractions demonstrates a reduction in the background free monomer concentration due to neutralization of the monomers of opposite charge. The effect of concentration of papain on mixed micellar behavior indicates that with increase in the concentration of protein, the cac and cmc values increase. The unfolding of polypeptide chain in the presence of mixed surfactant has been observed.
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50
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Dar AA, Garai A, Das AR, Ghosh S. Rheological and Fluorescence Investigation of Interaction between Hexadecyltrimethylammonium Bromide and Methylcellulose in the Presence of Hydrophobic Salts. J Phys Chem A 2010; 114:5083-91. [DOI: 10.1021/jp911545j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Aijaz Ahmad Dar
- Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India, Polymer Science Unit, Indian Association for the Cultivation of Science, Kolkata-700032, India, and Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata-700032, India
| | - Ashesh Garai
- Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India, Polymer Science Unit, Indian Association for the Cultivation of Science, Kolkata-700032, India, and Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata-700032, India
| | - Akhil Ranjan Das
- Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India, Polymer Science Unit, Indian Association for the Cultivation of Science, Kolkata-700032, India, and Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata-700032, India
| | - Soumen Ghosh
- Department of Chemistry, University of Kashmir, Srinagar-190006, J&K, India, Polymer Science Unit, Indian Association for the Cultivation of Science, Kolkata-700032, India, and Centre for Surface Science, Department of Chemistry, Jadavpur University, Kolkata-700032, India
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