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Xu H, Liang X, Lu S, Gao M, Wang S, Li Y. Self-Assembly of Palmitic Acid in the Presence of Choline Hydroxide. Molecules 2023; 28:7463. [PMID: 38005186 PMCID: PMC10673190 DOI: 10.3390/molecules28227463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
To disperse fatty acids in aqueous solution, choline, a quaternary ammonium ion, has been used recently. So far, only the self-assembly of myristic acid (MA) in the presence of choline hydroxide as a function of the molar ratio has been investigated, and, thus, the current understanding of these fatty acid systems is still limited. We investigated the self-assembly of palmitic acid (PA) in the presence of choline hydroxide (ChOH) as a function of the molar ratio (R) between ChOH and PA. The self-assemblies were characterized by phase contrast microscopy, cryo-TEM, small-angle X-ray scattering, and 2H NMR. The ionization state of PA was determined by pH, conductivity, and FT-IR measurements. With increase in R, various self-assembled structures, including vesicles, lamellar phase, rigid membranes (large sheets, tubules, cones, and polyhedrals), and micelles, form in the PA/ChOH system, different from those of the MA/ChOH system. The change in R induces pH variation and, consequently, a change in the PA ionization state, which, in turn, regulates the molecular interactions, including hydrogen bonding and electrostatic interaction, leading to various self-assemblies. Temperature is an important factor used to tune the self-assembly transitions. The fatty acid choline systems studied here potentially may be applicable in medicine, chemical engineering, and biotechnology.
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Affiliation(s)
- Huifang Xu
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (X.L.); (S.L.); (S.W.); (Y.L.)
| | - Xin Liang
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (X.L.); (S.L.); (S.W.); (Y.L.)
| | - Song Lu
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (X.L.); (S.L.); (S.W.); (Y.L.)
| | - Meihua Gao
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China
| | - Sijia Wang
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (X.L.); (S.L.); (S.W.); (Y.L.)
| | - Yuanyuan Li
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (X.L.); (S.L.); (S.W.); (Y.L.)
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Almeida M, Dudzinski D, Amiel C, Guigner JM, Prévost S, Le Coeur C, Cousin F. Aqueous Binary Mixtures of Stearic Acid and Its Hydroxylated Counterpart 12-Hydroxystearic Acid: Cascade of Morphological Transitions at Room Temperature. Molecules 2023; 28:molecules28114336. [PMID: 37298812 DOI: 10.3390/molecules28114336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/12/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
Here, we describe the behavior of mixtures of stearic acid (SA) and its hydroxylated counterpart 12-hydroxystearic acid (12-HSA) in aqueous mixtures at room temperature as a function of the 12-HSA/SA mole ratio R. The morphologies of the self-assembled aggregates are obtained through a multi-structural approach that combines confocal and cryo-TEM microscopies with small-angle neutron scattering (SANS) and wide-angle X-ray scattering (WAXS) measurements, coupled with rheology measurements. Fatty acids are solubilized by an excess of ethanolamine counterions, so that their heads are negatively charged. A clear trend towards partitioning between the two types of fatty acids is observed, presumably driven by the favorable formation of a H-bond network between hydroxyl OH function on the 12th carbon. For all R, the self-assembled structures are locally lamellar, with bilayers composed of crystallized and strongly interdigitated fatty acids. At high R, multilamellar tubes are formed. The doping via a low amount of SA molecules slightly modifies the dimensions of the tubes and decreases the bilayer rigidity. The solutions have a gel-like behavior. At intermediate R, tubes coexist in solution with helical ribbons. At low R, local partitioning also occurs, and the architecture of the self-assemblies associates the two morphologies of the pure fatty acids systems: they are faceted objects with planar domains enriched in SA molecules, capped with curved domains enriched in 12-HSA molecules. The rigidity of the bilayers is strongly increased, as well their storage modulus. The solutions remain, however, viscous fluids in this regime.
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Affiliation(s)
- Maëva Almeida
- Institut Chimie et Materiaux Paris Est, Université Paris Est Créteil, CNRS, UMR 7182, 2 Rue Henri Dunant, 94320 Thiais, France
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-CNRS UMR 12 CEA Saclay, 91191 Gif sur Yvette, France
| | - Daniel Dudzinski
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-CNRS UMR 12 CEA Saclay, 91191 Gif sur Yvette, France
| | - Catherine Amiel
- Institut Chimie et Materiaux Paris Est, Université Paris Est Créteil, CNRS, UMR 7182, 2 Rue Henri Dunant, 94320 Thiais, France
| | - Jean-Michel Guigner
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC)-IRD-MNHN, Sorbonne Université & CNRS, UMR 7590, CEDEX 05, 75252 Paris, France
| | - Sylvain Prévost
- Institut Laue-Langevin-71 Avenue des Martyrs, CS 20156, CEDEX 9, 38042 Grenoble, France
| | - Clémence Le Coeur
- Institut Chimie et Materiaux Paris Est, Université Paris Est Créteil, CNRS, UMR 7182, 2 Rue Henri Dunant, 94320 Thiais, France
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-CNRS UMR 12 CEA Saclay, 91191 Gif sur Yvette, France
| | - Fabrice Cousin
- Institut Chimie et Materiaux Paris Est, Université Paris Est Créteil, CNRS, UMR 7182, 2 Rue Henri Dunant, 94320 Thiais, France
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Bai G, Ma CG, Chen XW, Jing LL, Yan YP. Molecular insights into the loss of phytosterols during the neutralisation of corn oil. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Yang M, Song B, Du D, Pei X, Cui Z. Solution and emulsion behavior of highly soluble carboxylate surfactants with α-substituted phenoxy group. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Self-assembled vesicles formed by C18 unsaturated fatty acids and sodium dodecyl sulfate as a drug delivery system. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.070] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Sun N, Wu A, Yu Y, Gao X, Zheng L. Polyoxometalate‐Based Photochromic Supramolecular Hydrogels with Highly Ordered Spherical and Cylindrical Micellar Nanostructures. Chemistry 2019; 25:6203-6211. [DOI: 10.1002/chem.201900478] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/01/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Na Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of EducationShandong University Jinan 250100 P.R. China
| | - Aoli Wu
- Key Laboratory of Colloid and Interface Chemistry, Ministry of EducationShandong University Jinan 250100 P.R. China
| | - Yang Yu
- Key Laboratory of Colloid and Interface Chemistry, Ministry of EducationShandong University Jinan 250100 P.R. China
| | - Xinpei Gao
- Key Laboratory of Colloid and Interface Chemistry, Ministry of EducationShandong University Jinan 250100 P.R. China
| | - Liqiang Zheng
- Key Laboratory of Colloid and Interface Chemistry, Ministry of EducationShandong University Jinan 250100 P.R. China
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Huang Z, Qi P, Liu Y, Chai C, Wang Y, Song A, Hao J. Ionic-surfactants-based thermotropic liquid crystals. Phys Chem Chem Phys 2019; 21:15256-15281. [DOI: 10.1039/c9cp02697e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ionic surfactants can be combined with various functional groups through electrostatic interaction, resulting in a series of thermotropic liquid crystals (TLCs).
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Affiliation(s)
- Zhaohui Huang
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan
- China
| | - Ping Qi
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan
- China
| | - Yihan Liu
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan
- China
| | - Chunxiao Chai
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan
- China
| | - Yitong Wang
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan
- China
| | - Aixin Song
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan
- China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry
- Shandong University
- Ministry of Education
- Jinan
- China
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Arnould A, Cousin F, Salonen A, Saint-Jalmes A, Perez A, Fameau AL. Controlling Foam Stability with the Ratio of Myristic Acid to Choline Hydroxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:11076-11085. [PMID: 30149714 DOI: 10.1021/acs.langmuir.8b02261] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The interfacial and foam properties of a model system based on the mixture between myristic acid and choline hydroxide have been investigated as a function of the molar ratio ( R) between these two components and temperature. The aim of this study was to obtain insight on the links between the self-assemblies in bulk and in the foam liquid channels, the surfactant packing at the interface, and the resulting foam properties and stability. A multiscale approach was used combining small angle neutron scattering, specular neutron reflectivity, surface tension measurements, and photography. We highlighted three regimes of foam stability in this system by modifying R: high foam stability for R < 1, intermediate at R ∼ 1, and low for R > 1. The different regimes come from the pH variations in bulk linked to R. The pH plays a crucial role at the molecular scale by setting the ionization state of the myristic acid molecules adsorbed at the gas-liquid interface, which in turn controls both the properties of the monolayer and the stability of the films separating the bubbles. The main requirement to obtain stable foams is to set the pH close to the p Ka in order to have a mixture of protonated and ionized molecules giving rise to intermolecular hydrogen bonds. As a result, a dense monolayer is formed at the interface with a low surface tension. R also modifies the structure of self-assembly in bulk and therefore within the foam, but such a morphological change has only a minor effect on the foam stability. This study confirms that foam stability in surfactant systems having a carboxylic acid as polar headgroup is mainly linked to the ionization state of the molecules at the interface.
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Affiliation(s)
- Audrey Arnould
- Biopolymères Interactions Assemblages INRA , la Géraudière , 44316 Nantes , France
| | - Fabrice Cousin
- Laboratoire Léon-Brillouin , CEA Saclay , 91191 Gif-sur-Yvette CEDEX, France
| | - Anniina Salonen
- Laboratoire de Physique des Solides, UMR 8502, Université of Paris Sud, 91405 Orsay , France
| | - Arnaud Saint-Jalmes
- Institut de Physique de Rennes, UMR CNRS 6251-Université Rennes 1, Rennes 35042 , France
| | - Adrian Perez
- Grupo de Biocoloides, Instituto de Tecnología de Alimentos , Universidad Nacional del Litoral , 1 de Mayo 3250 , Santa Fe 3000 , Argentina
| | - Anne-Laure Fameau
- Biopolymères Interactions Assemblages INRA , la Géraudière , 44316 Nantes , France
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Arnould A, Cousin F, Chabas L, Fameau AL. Impact of the molar ratio and the nature of the counter-ion on the self-assembly of myristic acid. J Colloid Interface Sci 2018; 510:133-141. [DOI: 10.1016/j.jcis.2017.09.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 12/01/2022]
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