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Su X, Wan Z, Lu Y, Rojas O. Control of the Colloidal and Adsorption Behaviors of Chitin Nanocrystals and an Oppositely Charged Surfactant at Solid, Liquid, and Gas Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4881-4892. [PMID: 38386001 DOI: 10.1021/acs.langmuir.3c03787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Chitin has a unique hierarchical structure, spanning the macro- and nanoscales, and presents chemical characteristics that make it a suitable component of multiphase systems. Herein, we elucidate the colloidal interactions between partially deacetylated chitin nanocrystals (cationic ChNC) and an anionic surfactant, sodium dodecyl sulfate (SDS). We investigate charge neutralization and association (electrophoretic mobility, surface tensiometry, and quartz crystal microgravimetry) and their role in the stabilization of Pickering emulsions. We find SDS adsorption and association with ChNC under distinctive regimes: At low SDS concentration, submonolayer assemblies form on ChNC, driven by the hydrophobic effect and electrostatic interactions. With the increased SDS concentration, bilayers or patchy bilayers form, followed by adsorbed hemimicelles and micelles. We further suggested the role of hydrophobic effects in the observed colloidal transitions and complex conformations. At the highest SDS concentration tested, charge neutralization and SDS/ChNC flocculation take place. Remarkably, at given concentrations, adsorbed SDS endows the chitin nanoparticles with an effective hydrophobicity that opens the opportunity to achieve tailorable Pickering stabilization. Hence, a facile route is proposed by in situ modification by SDS physisorption, which extends the potential of renewable nanoparticles in the formulation of complex fluids, for instance, those relevant to household and healthcare products.
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Affiliation(s)
- Xiaoya Su
- Bioproducts Institute, Department of Chemical and Biological Engineering, University of British Columbia, 2360 E Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Zhangmin Wan
- Bioproducts Institute, Department of Chemical and Biological Engineering, University of British Columbia, 2360 E Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Yi Lu
- Bioproducts Institute, Department of Chemical and Biological Engineering, University of British Columbia, 2360 E Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Orlando Rojas
- Bioproducts Institute, Department of Chemical and Biological Engineering, University of British Columbia, 2360 E Mall, Vancouver, British Columbia V6T 1Z3, Canada
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
- Department of Wood Science, University of British Columbia, Vancouver, 2424 Main Mall 2900, Vancouver, British Columbia V6T 1Z4, Canada
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Chen H, Zhao R, Hu J, Wei Z, McClements DJ, Liu S, Li B, Li Y. One-Step Dynamic Imine Chemistry for Preparation of Chitosan-Stabilized Emulsions Using a Natural Aldehyde: Acid Trigger Mechanism and Regulation and Gastric Delivery. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:5412-5425. [PMID: 32320613 DOI: 10.1021/acs.jafc.9b08301] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Chitosan is a polysaccharide widely used as a structuring agent in foods and other materials because of its positive charge (amino groups). At present, however, it is difficult to form and stabilize emulsions using chitosan due to its high hydrophilicity. In this study, oil-in-water emulsions were prepared using a one-pot green-chemistry method. The chitosan and aldehyde molecules were in situ interfacially conjugated during homogenization, which promoted the adsorption of chitosan onto the oil droplet surfaces where they created a protective coating. The universality of this method was verified by using chitosan with different molecular weights and four kinds of natural aldehydes [cinnamaldehyde (CA), citral (CT), citronella (CN), and vanillin (VL)]. Chitosan with higher molecular weight facilitated the formation of emulsions. By harnessing the dynamic covalent nature of imine bonds, chitosan emulsions with an imine link display dynamic behavior with acid-catalyzed hydrolysis. The aldehyde structure could control the pH point of trigger for breakdown of emulsions, which was 1.0, 3.0, 4.0, and 4.0 for CA emulsion, CT emulsion, CN emulsion, and VL emulsion, respectively. At pH 6.5, aldehyde helped to decrease the interfacial tension of chitosan to about 10 mN/m, while this value would increase if the pH decreased by adding acid during the measurement. Chemical kinetics studies indicated that the hydrophobicity and conjugation effect of the aldehyde together determined the trigger points and properties of the emulsion. Finally, we used the optimized emulsions to encapsulate and control the release of curcumin. The gastric release behavior of the curcumin depended on aldehyde structure: VL > CN > CT ≈ CA. Hence, a tailor-made trigger release emulsion system can be achieved by rational selection and design of aldehyde structure to control hydrophobicity and conjugation effect of aldehydes.
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Affiliation(s)
- Huanle Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Runan Zhao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Junjie Hu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Zixiang Wei
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - David Julian McClements
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Shilin Liu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, Wuhan 430070, China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, Wuhan 430070, China
| | - Yan Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, Wuhan 430070, China
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Harutyunyan L, Harutyunyan R, Gabrielyan G, Lasareva E. Modification of chitosan and chitosan succinate by surfactants and investigation of their properties. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123622] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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4
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Bravo-Anaya LM, Fernández-Solís KG, Rosselgong J, Nano-Rodríguez JLE, Carvajal F, Rinaudo M. Chitosan-DNA polyelectrolyte complex: Influence of chitosan characteristics and mechanism of complex formation. Int J Biol Macromol 2019; 126:1037-1049. [PMID: 30615969 DOI: 10.1016/j.ijbiomac.2019.01.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/02/2019] [Accepted: 01/02/2019] [Indexed: 01/30/2023]
Abstract
Polyelectrolyte complexes formed between DNA and chitosan present different and interesting physicochemical properties combined with high biocompatibility; they are very useful for biomedical applications. DNA in its double helical structure is a semi-rigid polyelectrolyte chain. Chitosan, an abundant polysaccharide in nature, is considered as one of the most attractive vectors due to its biocompatibility and biodegradability. Here we study chitosan/DNA polyelectrolyte complex formation mechanism and the key factors of their stability. Compaction process of DNA with chitosan was monitored in terms of the ζ-potential and hydrodynamic radius variation as a function of charge ratios between chitosan and DNA. The influence of chitosan degree of acetylation (DA) and its molecular weight on the stoichiometry of chitosan/DNA complexes characteristics was also studied. It is shown that the isoelectric point of chitosan/DNA complexes, as well as their stability, is directly related to the degree of protonation of chitosan (depending on pH), to the DA and to the external salt concentration. It is demonstrated that DNA compaction process corresponds to an all or nothing like-process. Finally, since an important factor in cell travelling is the buffering effect of the vector used, we demonstrated the essential role of free chitosan on the proton-sponge effect.
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Affiliation(s)
- Lourdes Mónica Bravo-Anaya
- Universidad de Guadalajara, Departamento de Ingeniería Química, Blvd. M. García Barragán #1451, 44430 Guadalajara, Jalisco, Mexico; University of Bordeaux/Bordeaux INP, ENSCBP and CNRS, Laboratoire de Chimie des Polymères Organiques (UMR5629), 16 avenue Pey-Berland, Pessac 33607, France.
| | - Karla Gricelda Fernández-Solís
- Universidad de Guadalajara, Departamento de Ingeniería Química, Blvd. M. García Barragán #1451, 44430 Guadalajara, Jalisco, Mexico; Centro Universitario UTEG, Departamento de Investigación, Héroes Ferrocarrileros #1325, Guadalajara, Jalisco 44460, Mexico
| | - Julien Rosselgong
- University of Bordeaux/Bordeaux INP, ENSCBP and CNRS, Laboratoire de Chimie des Polymères Organiques (UMR5629), 16 avenue Pey-Berland, Pessac 33607, France
| | - Jesrael Luz Elena Nano-Rodríguez
- Universidad de Guadalajara, Departamento de Ingeniería Química, Blvd. M. García Barragán #1451, 44430 Guadalajara, Jalisco, Mexico; Centro Universitario UTEG, Departamento de Investigación, Héroes Ferrocarrileros #1325, Guadalajara, Jalisco 44460, Mexico
| | - Francisco Carvajal
- CUTonalá, Departamento de Ingenierías, Universidad de Guadalajara, Nuevo Periférico # 555 Ejido San José Tatepozco, 45425, Jalisco, Mexico
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Improvement of the surface wettability of silicone hydrogel films by self-assembled hydroxypropyltrimethyl ammonium chloride chitosan mixed colloids. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.08.073] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Senra TD, Campana-Filho SP, Desbrières J. Surfactant-polysaccharide complexes based on quaternized chitosan. Characterization and application to emulsion stability. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.05.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Preparation, surface activity and colloidal properties of the ionic complex of chitosan with hexadecyl-oligo-oxyethylene hemisuccinate. Carbohydr Polym 2018; 183:123-130. [DOI: 10.1016/j.carbpol.2017.11.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/13/2017] [Accepted: 11/24/2017] [Indexed: 11/21/2022]
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8
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Chen H, McClements DJ, Chen E, Liu S, Li B, Li Y. In Situ Interfacial Conjugation of Chitosan with Cinnamaldehyde during Homogenization Improves the Formation and Stability of Chitosan-Stabilized Emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14608-14617. [PMID: 29198120 DOI: 10.1021/acs.langmuir.7b03852] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The emulsifying properties of a natural cationic polysaccharide (chitosan) were improved by in situ conjugation with a natural essential oil (cinnamaldehyde, CA) during homogenization. In the absence of CA, chitosan-coated medium-chain triglyceride droplets were highly susceptible to creaming and coalescence at pH values ranging from 1 to 6.5. However, incorporation of relatively low levels of CA in the oil phase greatly improved the formation and stability of oil-in-water emulsions. These effects were attributed to two main factors: (i) covalent binding of lipophilic CA moieties to hydrophilic chitosan chains leading to conjugates with a good surface activity and (ii) interfacial cross-linking of adsorbed chitosan layers by CA leading to the formation of a rigid polymeric coating around the lipid droplets, which improved their stability against coalescence. The encapsulation technique developed in this study may be useful for applications in a range of commercial products; regulatory and flavor issues associated with chitosan and CA would have to be addressed.
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Affiliation(s)
| | - David Julian McClements
- Department of Food Science, University of Massachusetts , Amherst, Massachusetts 01003, United States
| | | | - Shilin Liu
- Functional Food Engineering &Technology Research Center of Hubei Province , Wuhan 430070, China
| | - Bin Li
- Functional Food Engineering &Technology Research Center of Hubei Province , Wuhan 430070, China
| | - Yan Li
- Functional Food Engineering &Technology Research Center of Hubei Province , Wuhan 430070, China
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9
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Senra TD, Khoukh A, Desbrières J. Interactions between quaternized chitosan and surfactant studied by diffusion NMR and conductivity. Carbohydr Polym 2017; 156:182-192. [DOI: 10.1016/j.carbpol.2016.09.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/26/2016] [Accepted: 09/09/2016] [Indexed: 10/21/2022]
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10
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Evaluation of the antibacterial activity of a cationic polymer in aqueous solution with a convenient electrochemical method. Anal Bioanal Chem 2016; 409:1627-1633. [DOI: 10.1007/s00216-016-0105-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 11/08/2016] [Accepted: 11/16/2016] [Indexed: 10/20/2022]
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11
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Roy AN, Benyahia L, Grisel M, Renou F. Shear interfacial viscoelasticity of native and hydrophobically modified xanthan at oil/water interface. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.07.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Chiappisi L, Gradzielski M. Co-assembly in chitosan-surfactant mixtures: thermodynamics, structures, interfacial properties and applications. Adv Colloid Interface Sci 2015; 220:92-107. [PMID: 25865361 DOI: 10.1016/j.cis.2015.03.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/23/2015] [Accepted: 03/23/2015] [Indexed: 01/23/2023]
Abstract
In this review, different aspects characterizing chitosan-surfactant mixtures are summarized and compared. Chitosan is a bioderived cationic polysaccharide that finds wide-ranged applications in various field, e.g., medical or food industry, in which synergistic effects with surfactant can play a fundamental role. In particular, the behavior of chitosan interacting with strong and weak anionic, nonionic as well as cationic surfactants is reviewed. We put a focus on oppositely charged systems, as they exhibit the most interesting features. In that context, we discuss the thermodynamic description of the interaction and in particular the structural changes as they occur as a function of the mixed systems and external parameters. Moreover, peculiar properties of chitosan coated phospholipid vesicles are summarized. Finally, their co-assembly at interfaces is briefly reviewed. Despite the behavior of the mentioned systems might strongly differ, resulting in a high variety of properties, few general rules can be pointed out which improve the understanding of such complex systems.
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13
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Methylcellulose, a Cellulose Derivative with Original Physical Properties and Extended Applications. Polymers (Basel) 2015. [DOI: 10.3390/polym7050777] [Citation(s) in RCA: 220] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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14
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Shilova SV, Tret’yakova AY, Barabanov VP. Complex formation of sodium alkyl sulfates with chitosan in aqueous-ethanol solutions. RUSS J APPL CHEM+ 2015. [DOI: 10.1134/s1070427214120210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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16
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Petit C, Reynaud S, Desbrieres J. Amphiphilic derivatives of chitosan using microwave irradiation. Toward an eco-friendly process to chitosan derivatives. Carbohydr Polym 2015; 116:26-33. [DOI: 10.1016/j.carbpol.2014.04.083] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 04/08/2014] [Accepted: 04/21/2014] [Indexed: 11/26/2022]
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17
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18
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Shilova SV, Zinurova OA, Tret’yakova AY, Barabanov VP. Polymer colloid complexes of chitosan with sodium dodecyl sulfate in water-alcohol media. RUSS J APPL CHEM+ 2014. [DOI: 10.1134/s1070427214030124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Bharmoria P, Singh T, Kumar A. Complexation of chitosan with surfactant like ionic liquids: Molecular interactions and preparation of chitosan nanoparticles. J Colloid Interface Sci 2013; 407:361-9. [DOI: 10.1016/j.jcis.2013.06.032] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 06/14/2013] [Accepted: 06/15/2013] [Indexed: 10/26/2022]
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20
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Venkataraman P, Tang J, Frenkel E, McPherson GL, He J, Raghavan SR, Kolesnichenko V, Bose A, John VT. Attachment of a hydrophobically modified biopolymer at the oil-water interface in the treatment of oil spills. ACS APPLIED MATERIALS & INTERFACES 2013; 5:3572-3580. [PMID: 23527784 DOI: 10.1021/am303000v] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The stability of crude oil droplets formed by adding chemical dispersants can be considerably enhanced by the use of the biopolymer, hydrophobically modified chitosan. Turbidimetric analyses show that emulsions of crude oil in saline water prepared using a combination of the biopolymer and the well-studied chemical dispersant (Corexit 9500A) remain stable for extended periods in comparison to emulsions stabilized by the dispersant alone. We hypothesize that the hydrophobic residues from the polymer preferentially anchor in the oil droplets, thereby forming a layer of the polymer around the droplets. The enhanced stability of the droplets is due to the polymer layer providing an increase in electrostatic and steric repulsions and thereby a large barrier to droplet coalescence. Our results show that the addition of hydrophobically modified chitosan following the application of chemical dispersant to an oil spill can potentially reduce the use of chemical dispersants. Increasing the molecular weight of the biopolymer changes the rheological properties of the oil-in-water emulsion to that of a weak gel. The ability of the biopolymer to tether the oil droplets in a gel-like matrix has potential applications in the immobilization of surface oil spills for enhanced removal.
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Affiliation(s)
- Pradeep Venkataraman
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, United States
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21
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Pérez-Gramatges A, Matheus CR, Lopes G, da Silva JC, Nascimento RS. Surface and interfacial tension study of interactions between water-soluble cationic and hydrophobically modified chitosans and nonylphenol ethoxylate. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2012.11.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Testouri A, Honorez C, Barillec A, Langevin D, Drenckhan W. Highly Structured Foams from Chitosan Gels. Macromolecules 2010. [DOI: 10.1021/ma100819j] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Testouri
- Laboratoire de Physique des Solides, Université Paris-Sud, UMR8502 Orsay, France
| | - C. Honorez
- Laboratoire de Physique des Solides, Université Paris-Sud, UMR8502 Orsay, France
| | - A. Barillec
- Laboratoire de Physique des Solides, Université Paris-Sud, UMR8502 Orsay, France
| | - D. Langevin
- Laboratoire de Physique des Solides, Université Paris-Sud, UMR8502 Orsay, France
| | - W. Drenckhan
- Laboratoire de Physique des Solides, Université Paris-Sud, UMR8502 Orsay, France
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24
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Pavinatto FJ, Caseli L, Oliveira ON. Chitosan in Nanostructured Thin Films. Biomacromolecules 2010; 11:1897-908. [DOI: 10.1021/bm1004838] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Felippe J. Pavinatto
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brasil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Diadema, SP, Brasil
| | - Luciano Caseli
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brasil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Diadema, SP, Brasil
| | - Osvaldo N. Oliveira
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brasil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Diadema, SP, Brasil
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25
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Huang SM, Hwang JJ, Lin LH, Liu HJ, Yeh TC. Interfacial properties of chitosan and nonylphenol polyoxyethylene ether. J Appl Polym Sci 2010. [DOI: 10.1002/app.31646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Peng B, Hao Y, Kang H, Han X, Peng C, Liu H. Aggregation behavior of N-carboxyethylchitosan in aqueous solution: effects of pH, polymer concentration, and presence of a gemini surfactant. Carbohydr Res 2010; 345:101-7. [DOI: 10.1016/j.carres.2009.10.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 10/14/2009] [Accepted: 10/20/2009] [Indexed: 11/16/2022]
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27
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Kleinschmidt F, Stubenrauch C, Delacotte J, von Klitzing R, Langevin D. Stratification of foam films containing polyelectrolytes. Influence of the polymer backbone's rigidity. J Phys Chem B 2009; 113:3972-80. [PMID: 19673140 DOI: 10.1021/jp8066553] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We studied the stratification behavior of free-standing foam films which are stabilized by nonionic surfactants and contain polyelectrolytes with different backbone flexibilities, namely sulfonated polyacrylamide (PAMPS), carboxymethyl-chitin (CM-Chitin), Xanthan, and DNA. Stratification is due to a specific arrangement of the polymer chains in the confined environment of the thin films. While stratification is easily observed for films containing PAMPS and CM-Chitin, it is more difficult to observe with Xanthan and DNA. We will discuss this effect in terms of different polymer backbone rigidities, which, in turn, are expected to lead to different time scales for polymer network relaxation.
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Affiliation(s)
- Felix Kleinschmidt
- Laboratoire de Physique des Solides, Batiment 510, Université Paris Sud, Orsay, France
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28
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Rinaudo M, Kil’deeva NR, Babak VG. Surfactant-polyelectrolyte complexes on the basis of chitin. RUSS J GEN CHEM+ 2008. [DOI: 10.1134/s1070363208110455] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Desbrieres J, Babak VG. Interfacial properties of amphiphilic systems on the basis of natural polymers—chitin derivatives. RUSS J GEN CHEM+ 2008. [DOI: 10.1134/s1070363208110443] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Onésippe C, Lagerge S. Studies of the association of chitosan and alkylated chitosan with oppositely charged sodium dodecyl sulfate. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2008.07.054] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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31
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Payet L, Terentjev EM. Emulsification and stabilization mechanisms of o/w emulsions in the presence of chitosan. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:12247-12252. [PMID: 18828612 DOI: 10.1021/la8019217] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We study emulsification of paraffin oil in aqueous solutions of chitosan without adding any other surfactant. By monitoring the surface tension of the water-paraffin interface, we show that chitosan itself has only a weak surface activity. Nevertheless, chitosan dissolved in the aqueous phase allows the dispersion of oil by increasing the matrix viscosity and provides stabilization of the oil-water interface by forming a dense polyelectrolitic brush on the water side of this interface. We characterize emulsions with varying oil content, and concentrations of chitosan, and follow their long-term stability. Finally, we show that by precipitating the chitosan the rigid elastic network is formed in the aqueous phase, making a very stable suspension.
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Affiliation(s)
- Linda Payet
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
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32
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Onesippe C, Lagerge S. Study of the complex formation between sodium dodecyl sulfate and hydrophobically modified chitosan. Carbohydr Polym 2008. [DOI: 10.1016/j.carbpol.2008.04.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lundin M, Macakova L, Dedinaite A, Claesson P. Interactions between chitosan and SDS at a low-charged silica substrate compared to interactions in the bulk--the effect of ionic strength. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:3814-3827. [PMID: 18341359 DOI: 10.1021/la702653m] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The effect of ionic strength on association between the cationic polysaccharide chitosan and the anionic surfactant sodium dodecyl sulfate, SDS, has been studied in bulk solution and at the solid/liquid interface. Bulk association was probed by turbidity, electrophoretic mobility, and surface tension measurements. The critical aggregation concentration, cac, and the saturation binding of surfactants were estimated from surface tension data. The number of associated SDS molecules per chitosan segment exceeded one at both salt concentrations. As a result, a net charge reversal of the polymer-surfactant complexes was observed, between 1.0 and 1.5 mM SDS, independent of ionic strength. Phase separation occurs in the SDS concentration region where low charge density complexes form, whereas at high surfactant concentrations (up to several multiples of cmc SDS) soluble aggregates are formed. Ellipsometry and QCM-D were employed to follow adsorption of chitosan onto low-charged silica substrates, and the interactions between SDS and preadsorbed chitosan layers. A thin (0.5 nm) and rigid chitosan layer was formed when adsorbed from a 0.1 mM NaNO3 solution, whereas thicker (2 nm) chitosan layers with higher dissipation/unit mass were formed from solutions at and above 30 mM NaNO3. The fraction of solvent in the chitosan layers was high independent of the layer thickness and rigidity and ionic strength. In 30 mM NaNO3 solution, addition of SDS induced a collapse at low concentrations, while at higher SDS concentrations the viscoelastic character of the layer was recovered. Maximum adsorbed mass (chitosan + SDS) was reached at 0.8 times the cmc of SDS, after which surfactant-induced polymer desorption occurred. In 0.1 mM NaNO3, the initial collapse was negligible and further addition of surfactant lead to the formation of a nonrigid, viscoelastic polymer layer until desorption began above a surfactant concentration of 0.4 times the cmc of SDS.
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Affiliation(s)
- Maria Lundin
- Surface Chemistry, Department of Chemistry, Royal Institute of Technology, Drottning Kristinas väg 51, Stockholm, Sweden
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34
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Study of the complex formation between sodium dodecyl sulfate and chitosan. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.10.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Raynaud J, Choquenet B, Marie E, Dellacherie E, Nouvel C, Six JL, Durand A. Emulsifying Properties Of Biodegradable Polylactide-Grafted Dextran Copolymers. Biomacromolecules 2008; 9:1014-21. [DOI: 10.1021/bm701101n] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. Raynaud
- Laboratoire de Chimie Physique Macromoléculaire, UMR 7568, CNRS-Nancy-University, ENSIC, BP 20451, 54001 Nancy Cedex, France
| | - B. Choquenet
- Laboratoire de Chimie Physique Macromoléculaire, UMR 7568, CNRS-Nancy-University, ENSIC, BP 20451, 54001 Nancy Cedex, France
| | - E. Marie
- Laboratoire de Chimie Physique Macromoléculaire, UMR 7568, CNRS-Nancy-University, ENSIC, BP 20451, 54001 Nancy Cedex, France
| | - E. Dellacherie
- Laboratoire de Chimie Physique Macromoléculaire, UMR 7568, CNRS-Nancy-University, ENSIC, BP 20451, 54001 Nancy Cedex, France
| | - C. Nouvel
- Laboratoire de Chimie Physique Macromoléculaire, UMR 7568, CNRS-Nancy-University, ENSIC, BP 20451, 54001 Nancy Cedex, France
| | - J.-L. Six
- Laboratoire de Chimie Physique Macromoléculaire, UMR 7568, CNRS-Nancy-University, ENSIC, BP 20451, 54001 Nancy Cedex, France
| | - A. Durand
- Laboratoire de Chimie Physique Macromoléculaire, UMR 7568, CNRS-Nancy-University, ENSIC, BP 20451, 54001 Nancy Cedex, France
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Dong AJ, Feng MH, Qi HY, Li SS, Deng LD. Synthesis and properties of O-carboxymethyl chitosan/methoxy poly(ethylene glycol) graft copolymers. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:869-76. [PMID: 17665110 DOI: 10.1007/s10856-007-3183-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2007] [Accepted: 05/17/2007] [Indexed: 05/16/2023]
Abstract
O-carboxymethyl chitosan/methoxy poly(ethylene glycol) graft copolymers (OCMCS-g-MPEGs) with different degrees of substitution (DS) were synthesized by reductive N-alkylation of chitosan with poly(ethylene glycol) aldehyde. The properties of OCMCS-g-MPEGs, including the solubility, structure, hydrodynamic behaviors, isoelectric point (IEP) and interaction with water-soluble chitosan, were investigated. As a PEGylated polyampholyte, OCMCS-g-MPEGs can resolve in water over all pH range and the pH value at IEP (pH(IEP)) decreases when DS increases. The hydrodynamic behaviors of OCMCS-g-MPEGs in deionized H(2)O are markedly affected by DS and pH(IEP) in the experiment concentration range. The particle size of the complexes of OCMCS-g-MPEGs with water-soluble chitosan is strongly affected by the concentration of water-soluble chitosan and the pH value.
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Affiliation(s)
- An-Jie Dong
- Department of Polymer Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, P.R. China.
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Tikhonov V, Stepnova E, Babak V, Krayukhina M, Berezin B, Yamskov I. Amphiphilic N-[2(3)-(dodec-2′-en-1′-yl)succinoyl]chitosan: Synthesis and properties. REACT FUNCT POLYM 2008. [DOI: 10.1016/j.reactfunctpolym.2007.11.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Rinaudo M. Main properties and current applications of some polysaccharides as biomaterials. POLYM INT 2008. [DOI: 10.1002/pi.2378] [Citation(s) in RCA: 672] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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39
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Babak VG, Auzely R, Rinaudo M. Effect of Electrolyte Concentration on the Dynamic Surface Tension and Dilational Viscoelasticity of Adsorption Layers of Chitosan and Dodecyl Chitosan. J Phys Chem B 2007; 111:9519-29. [PMID: 17658788 DOI: 10.1021/jp0718653] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of an external salt (AcONa) on the kinetics of adsorption and structure formation inside the adsorption layers (ALs) of chitosan (Ch) and dodecyl chitosan (C12Ch) as well as on the frequency dependence of the complex dilational elasticity modulus of these layers has been studied. The complex dilational elasticity modulus of adsorption layers of polymers has been measured on the drop tensiometer (Tracker, IT Concept, France) upon applying a small sinusoidal variation of the drop area with a given frequency, omega, in the range from 10(-2) to 0.63 rad/s and recording the variation of the surface pressure. It has been found that, in the absence of the salt, the dilational storage modulus, E'(omega), of ALs of both Ch and C12Ch is lower with regard to the loss modulus, E' '(omega), in the whole range of frequencies used, testifying for the liquidlike rheological behavior of these layers. With an increase of the salt concentration up to CAcONa > 0.1 M, the ALs become solidlike, as shown when E'(omega) > E' '(omega). Consequently, the characteristic frequency, omega c, corresponding to the intercept between the E'(omega) and E' '(omega) curves, gradually varies from omega c > 1 rad/s to omega c < 0.01 rad/s when the salt concentration is increased from zero to CAcONa = 1 M. Hydrophobically modified C12Ch, having long grafted alkyl chains, exhibited a higher sensitivity to the presence of salt than Ch: the former solidifies more readily and at lower salt concentrations than the latter. It has been found that the experimental E'(omega) and E' '(omega) curves exhibit two characteristic relaxation frequencies, omega 01 approximately 1 rad/s and omega 02 approximately 10(-3)-10(-2) rad/s, whose physical meaning and values were related to the structure of the ALs and to the competitive contribution of electrostatic and hydrophobic interactions between amino and nonpolar groups of Ch and C12Ch to the formation of a gel-like network inside the polymeric film at the interface.
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Affiliation(s)
- Valery G Babak
- Centre de Recherches sur les Macromolécules Végétales, CNRS, Laboratoire Associé à l'Université Joseph Fourier, BP53- 38041 Grenoble cedex 9, France.
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Pavinatto FJ, Pavinatto A, Caseli L, Santos DSD, Nobre TM, Zaniquelli MED, Oliveira ON. Interaction of Chitosan with Cell Membrane Models at the Air−Water Interface. Biomacromolecules 2007; 8:1633-40. [PMID: 17419586 DOI: 10.1021/bm0701550] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper we employed phospholipid Langmuir monolayers as membrane models to probe interactions with chitosan. Using a combination of surface pressure--area and surface potential--area isotherms and rheological measurements with the pendent drop technique, we observed that chitosan interacts with phospholipid molecules at the air-water interface. We propose a model in which chitosan interacts with the phospholipids mainly through electrostatic interactions, but also including H-bonding and hydrophobic forces, depending on the phospholipid packing density. At large areas per molecule, chitosan in the subphase adsorbs onto the monolayer, expanding it. At small areas per molecule, chitosan is located in the subsurface. Indeed, a mixed chitosan-phospholipid monolayer can be transferred onto solid supports, even at high surface pressures. The effects of chitosan on the viscoelastic properties of phospholipid monolayers may be taken as evidence for the ability of chitosan to disrupt cell membranes.
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Affiliation(s)
- Felippe J Pavinatto
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, Brazil
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41
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Daoud-Mahammed S, Ringard-Lefebvre C, Razzouq N, Rosilio V, Gillet B, Couvreur P, Amiel C, Gref R. Spontaneous association of hydrophobized dextran and poly-β-cyclodextrin into nanoassemblies. J Colloid Interface Sci 2007; 307:83-93. [PMID: 17126360 DOI: 10.1016/j.jcis.2006.10.072] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2006] [Revised: 09/29/2006] [Accepted: 10/30/2006] [Indexed: 11/24/2022]
Abstract
New nanoassemblies were instantaneously prepared by mixing two aqueous solutions, one containing a beta-cyclodextrin polymer (pbetaCD), and the other a hydrophobically modified by alkyl chains dextran (MD). The formation mechanism and the inner structure of these nanoassemblies were analysed using surface tension measurements and (1)H NMR spectroscopy. The effect of a hydrophobic guest molecule, such as benzophenone (BZ), on the formation and stability of the nanoassemblies was also evaluated. MD exhibited the typical behaviour of a soluble amphiphilic molecule and adsorbed at the air/water interface. Whereas the injection of native beta-CDs in the solution beneath the adsorbed MD monolayer did not produce any change in the surface tension, that of the pbetaCD resulted in an increase in the surface tension, indicating the desorption of the polymer from the interface. This result accounts for a cooperative effect of beta-CDs linked together in the pbetaCD polymer on dextran desorption. The presence of benzophenone in the system hindered the sequestration of dextran alkyl moieties by beta-CD in the polymer without impeding the formation of associative nanoassemblies of 100-200 nm. (1)H NMR investigations demonstrated that, in the BZ-loaded nanoassemblies, the hydrophobic molecule was mainly located into the cyclodextrin cavities.
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42
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Rosół K, Szczubiałka K, Jachimska B, Zapotoczny S, Nowakowska M. Interactions of a smart cationic polyelectrolyte based on hydroxypropylcellulose with an anionic surfactant. J Appl Polym Sci 2007. [DOI: 10.1002/app.27475] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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43
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Abstract
[Chemical structure: see text] This paper describes the behavior of some polysaccharides with well-known chemical structures and in which the influence of cooperative secondary interactions play an important role. The roles played by hydrophobic and ionic interactions (including ionic selectivity) on polysaccharide conformation and gelation are discussed. Electrostatic attractions are also important in the complexes formed between surfactants and polyelectrolytes of opposite charge. Finally, van der Waals dipolar interactions and particularly hydrogen-bond formation are examined. The role of hydrogen bonds in solubility, conformation, and especially the local stiffness of polysaccharides, but also in polymer-polymer complexes frequently obtained with polysaccharides, is developed. Repeat unit for a number polysaccharides.
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45
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Bratskaya S, Avramenko V, Schwarz S, Philippova I. Enhanced flocculation of oil-in-water emulsions by hydrophobically modified chitosan derivatives. Colloids Surf A Physicochem Eng Asp 2006. [DOI: 10.1016/j.colsurfa.2005.09.036] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Dynamic surface tension and dilational viscoelasticity of adsorption layers of alkylated chitosans and surfactant–chitosan complexes. Colloid Polym Sci 2006. [DOI: 10.1007/s00396-005-1427-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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Desbrières J, Babak VG. Interfacial properties of amphiphilic natural polymer systems based on derivatives of chitin. POLYM INT 2006. [DOI: 10.1002/pi.2055] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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48
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Rinaudo M, Auzely R, Vallin C, Mullagaliev I. Specific Interactions in Modified Chitosan Systems. Biomacromolecules 2005; 6:2396-407. [PMID: 16153074 DOI: 10.1021/bm0580025] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This paper concerns the bulk and interfacial properties of a series of alkylated chitosans having different alkyl chain lengths grafted randomly along the main chitosan chain. Chitosan has a low degree of acetylation (5%); on chitosan derivatives, the role of the degree of grafting and of length of the alkyl chains are examined. The optimum alkyl chain length is C12 and the degree of grafting 5% to get physical gelation based on the formation of hydrophobic domains. The cross-linking is essentially controlled by the salt concentration: it is shown that 0.025 M AcONa is needed to screen electrostatic interchain repulsions. Hydrophobic interactions produce highly non-Newtonian behavior with large thinning behavior; this behavior is suppressed in the presence of cyclodextrins able to cap the hydrophobic alkyl chains. The interfacial properties of the chitosan derivatives were tested for the air/aqueous solution interfaces. Specifically, the role of their structure on the kinetic of film formation was examined showing that excess of external salt favors the stabilization of the interfacial film. The derivatives with a higher degree of substitution and longer alkyl chains are more efficient and give a higher elastic modulus compared to the model surfactant as a result of the chain properties.
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Affiliation(s)
- M Rinaudo
- Centre de recherche sur les Macromolécules Végétales, CNRS, Joseph Fourier University, BP 53, 38041 Grenoble Cedex 9, France
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49
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Henni W, Deyme M, Stchakovsky M, LeCerf D, Picton L, Rosilio V. Aggregation of hydrophobically modified polysaccharides in solution and at the air–water interface. J Colloid Interface Sci 2005; 281:316-24. [PMID: 15571687 DOI: 10.1016/j.jcis.2004.08.094] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2004] [Accepted: 08/11/2004] [Indexed: 11/19/2022]
Abstract
The present article focuses on the comparative study of physicochemical properties of two ionic pullulan derivatives modified by 10 or 35 C8 chains per 100 anhydroglucose units, named CMP10C8 and CMP35C8, respectively. In aqueous solutions, these derivatives exhibited an associative behavior as evidenced by pyrene fluorescence spectroscopy. This phenomenon, which stems from intra- and/or intermolecular interactions between the hydrophobic groups grafted on the polymer backbone, results in the formation of more or less condensed aggregates depending on the C8 ratio and the ionic strength of the media. The hydrophobically modified pullulans also displayed surface properties. Their adsorption at the air-solution interface was assessed from surface tension measurements. The results showed that both hydrophobized polymers adsorb in a coil conformation occupying a large interfacial molecular area. The comparison of these molecular areas indicated that CMP35C8 adopts a more shrunken conformation at the interface than CMP10C8, due to stronger intramolecular interactions. The stability of the adsorbed monolayer under bulk dilution was investigated by ellipsometric measurements. Whereas bulk dilution had no effect on the stability of the adsorbed CMP35C8 film, it provoked significant changes in the adsorbed CMP10C8 monolayer. The stability of the CMP35C8 monolayers was attributed to the existence of intermolecular associations between the adsorbed coils.
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Affiliation(s)
- Widad Henni
- Physico-Chimie des Surfaces, UMR CNRS 8612, Université Paris-Sud, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France
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50
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Babak VG, Boury F. Adsorption kinetics of hydrophobic polysoaps at the methylene chloride–water interface. Colloids Surf A Physicochem Eng Asp 2004. [DOI: 10.1016/j.colsurfa.2004.03.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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