1
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Zhong C, Zhang X, Sun Y, Shen Z, Mao Y, Liu T, Wang R, Nie L, Shavandi A, Yunusov KE, Jiang G. Rizatriptan benzoate-loaded dissolving microneedle patch for management of acute migraine therapy. J Biomater Appl 2024; 38:989-999. [PMID: 38427917 DOI: 10.1177/08853282241237323] [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] [Indexed: 03/03/2024]
Abstract
In this study, dissolving microneedles (MNs) using polyvinyl alcohol (PVA) and poly (1-vinylpyrrolidone-co-vinyl acetate) (P(VP-co-VA)) as matrix materials were developed for transdermal delivery of rizatriptan benzoate (RB) for acute migraine treatment. In-vitro permeation studies were conducted to assess the feasibility of the as-fabricated dissolving MNs to release RB. Drug skin penetration were tested by Franz diffusion cells, showing an increase of the transdermal flux compared to passive diffusion due to the as-fabricated dissolving MNs having a sufficient mechanical strength to penetrate the skin and form microchannels. The pharmacological study in vivo showed that RB-loaded dissolving MNs significantly alleviated migraine-related response by up-regulating the level of 5-hydroxytryptamine (5-HT) and down-regulating the levels of calcitonin gene-related peptide (CGRP) and substance P (SP). In conclusion, the RB-loaded dissolving MNs have advantages of safety, convenience, and high efficacy over conventional administrations, laying a foundation for the transdermal drug delivery system treatment for acute migraine.
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Affiliation(s)
- Chao Zhong
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
- International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers, Hangzhou, China
| | - Xiufeng Zhang
- Department of Anorectal Surgery, Hangzhou Third People's Hospital, Hangzhou, China
| | - Yanfang Sun
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhong Shen
- Department of Anorectal Surgery, Hangzhou Third People's Hospital, Hangzhou, China
| | - Yanan Mao
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
- International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers, Hangzhou, China
| | - Tianqi Liu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
- International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers, Hangzhou, China
| | - Rui Wang
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
- International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers, Hangzhou, China
| | - Lei Nie
- College of Life Sciences, Xinyang Normal University, Xinyang, China
| | - Amin Shavandi
- École polytechnique de Bruxelles, 3BIO-BioMatter, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Khaydar E Yunusov
- Institute of Polymer Chemistry and Physics, Uzbekistan Academy of Sciences, Tashkent, Uzbekistan
| | - Guohua Jiang
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, China
- International Scientific and Technological Cooperation Base of Intelligent Biomaterials and Functional Fibers, Hangzhou, China
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2
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Korelc K, Larsen BS, Heintze AL, Henrik-Klemens Å, Karlsson J, Larsson A, Tho I. Towards personalized drug delivery via semi-solid extrusion: Exploring poly(vinyl alcohol-co-vinyl acetate) copolymers for hydrochlorothiazide-loaded films. Eur J Pharm Sci 2024; 192:106645. [PMID: 37984596 DOI: 10.1016/j.ejps.2023.106645] [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: 08/14/2023] [Revised: 11/02/2023] [Accepted: 11/05/2023] [Indexed: 11/22/2023]
Abstract
The increasing need for personalized drug delivery requires developing systems with tailorable properties. The copolymer poly(vinyl alcohol-co-vinyl acetate) (PVA/PVAc) allows for adjusting the monomer ratio. This study explored the effect of vinyl alcohol (VA) and vinyl acetate (VAc) monomer ratio on the properties of hydrochlorothiazide (HCT) films. Five copolymers with different VA/VAc ratios were selected and characterized. Semi-solid extrusion was employed as a method for the preparation of HCT-PVA/PVAc films to address the challenges of HCT´s low water solubility, high melting point, and low permeability. All copolymers were suitable for semi-solid extrusion, however, the mechanical properties of films with higher VA proportions were more suitable. The drug was found to be homogeneously distributed on a micrometer level throughout the prepared films. It was found that using different monomer ratios in the copolymer allows for drug release tuning - higher VA proportions showed an increased rate of drug release. Experiments through HT29-MTX cell monolayers revealed differences in HCT permeability between the different formulations. In addition, no cytotoxicity was observed for the tested formulations. The results highlight the effect of monomer ratio on film properties, providing valuable guidance for formulators in selecting PVA/PVAc copolymers for achieving desired high-quality films. In addition, varying the monomer ratio allows tuning of the film properties, and can be applied for personalization, with flexible-dose adjustment and design of appealing shapes of the pharmaceutics, not least attractive for pediatric drug delivery.
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Affiliation(s)
- Karin Korelc
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, Oslo 0316, Norway.
| | - Bjarke Strøm Larsen
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, Oslo 0316, Norway
| | - Anna-Lena Heintze
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, Oslo 0316, Norway; Department of Pharmacy, Julius-Maximilians-University of Würzburg, Germany
| | - Åke Henrik-Klemens
- FibRe Centre for Lignocellulose-Based Thermoplastics, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Sweden; Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Sweden
| | - Jakob Karlsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Sweden
| | - Anette Larsson
- FibRe Centre for Lignocellulose-Based Thermoplastics, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Sweden; Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Sweden
| | - Ingunn Tho
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, Oslo 0316, Norway
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3
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Li W, Li W, Wan Y, Zhou T, Wang L. Thymol-loaded Zein-pectin composite nanoparticles as stabilizer to fabricate Pickering emulsion of star anise essential oil for improved stability and antimicrobial activity. J Food Sci 2023; 88:3807-3819. [PMID: 37530639 DOI: 10.1111/1750-3841.16700] [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: 12/28/2022] [Revised: 06/16/2023] [Accepted: 06/25/2023] [Indexed: 08/03/2023]
Abstract
The aim of the present study was to prepare a new antimicrobial Pickering emulsion of which the star anise essential oil was added to the oil phase, and to investigate the effect of stabilization by bio-based active nanoparticles consisting of zein and pectin loaded with thymol. First, the thymol-loaded zein/pectin composite nanoparticles (ZTNPs) were fabricated as uniformly distributed spherical nanoparticles with an average diameter of 200 nm through antisolvent precipitation. Second, the effects of nanoparticles' concentration, oil phase ratio, and storage time on the stability of emulsions were explored according to particle size potential, interfacial tension, rheology, and micromorphology. Finally, the antibacterial results showed that Pickering emulsion inhibited Escherichia coli and Staphylococcus aureus compared to the control group by nearly 7 log colony-forming unit/g at 36 h, which was twice as much as the inhibition by thymol or star anise essential oils and ZTNPs. Therefore, the proposed Pickering emulsion with star anise essential oil could be used as a green and safe plant-derived antimicrobial agent in the food industry.
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Affiliation(s)
- Wei Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, P. R. China
| | - Wenqing Li
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, P. R. China
| | - Yulian Wan
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, P. R. China
| | - Tao Zhou
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, P. R. China
| | - Longfeng Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, P. R. China
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4
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Nabi A, Jesudason CG, Sabir JSM, Kamli MR. Thermodynamic Insights of the Molecular Interactions of Dopamine (Neurotransmitter) with Anionic Surfactant in Non-Aqueous Media. Pharmaceuticals (Basel) 2023; 16:1187. [PMID: 37764995 PMCID: PMC10537161 DOI: 10.3390/ph16091187] [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: 06/19/2023] [Revised: 07/22/2023] [Accepted: 07/27/2023] [Indexed: 09/29/2023] Open
Abstract
This study was aimed at establishing the interactions prevailing in an anionic surfactant, sodium dodecyl sulfate, and dopamine hydrochloride in an alcoholic (ethanol) media by using volumetric, conductometric, and tensiometric techniques. Various methods were utilized to estimate the critical micelle concentration (cmc) values at different temperatures. The entire methods yielded the same cmc values. The corresponding thermodynamic parameters viz. the standard free energy of micellization (Gmico), enthalpy of micellization (Hmico), and entropy of micellization (Smico) were predicted by applying the pseudo-phase separation model. The experimental density data at different temperatures (298.15 K, 303.15 K, 308.15 K, and 313.15 K) were utilized to estimate the apparent molar volumes (Vϕo) at an infinite dilution, apparent molar volumes (Vφcmc) at the critical micelle concentration, and apparent molar volumes (ΔVφm) upon micellization. Various micellar and interfacial parameters, for example, the surface excess concentration (Γmax), standard Gibbs free energy of adsorption at the interface (ΔGoad), and the minimum surface area per molecule (Amin), were appraised using the surface tension data. The results were used to interpret the intermolecular interactions prevailing in the mixed systems under the specified experimental conditions.
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Affiliation(s)
- Arshid Nabi
- Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | | | - Jamal S. M. Sabir
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Majid Rasool Kamli
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
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5
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Zhao F, Quan H, Zhang S, Xu Y, Zhou Z, Chen G, Li Q. Watered-Based Graphene Dispersion Stabilized by a Graft Co-Polymer for Electrically Conductive Screen Printing. Polymers (Basel) 2023; 15:polym15020356. [PMID: 36679238 PMCID: PMC9860939 DOI: 10.3390/polym15020356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 01/12/2023] Open
Abstract
Graphene conductive inks have attracted significant attention in recent years due to their high conductivity, corrosion resistance, and environmentally friendly nature. However, the dispersion of graphene in aqueous solution is still challenging. In this work, we synthesized an amphiphilic graft copolymer, polyvinyl alcohol-g-polyaniline (PVA-g-PANI), and studied the graphene dispersion prepared with the graft copolymer by high-speed shear dispersion. The amphiphilic graft copolymer can be used as a stabilizer and adhesive agent in graphene dispersion. Given the steric hindrance of the graft copolymer, the stability of graphene dispersion is improved by decreasing the probability of π-π stacking. PVA-g-PANI has a better stability on graphene dispersion than carboxymethylcellulose sodium (CMC-Na) and a mixture of PVA and PANI. The graft copolymer has only a slight effect on the conductivity of graphene dispersion due to the existence of conductive PANI, which is beneficial for preparing the graphene dispersion with good conductivity and adhesion. Graphene dispersion is well-adapted to screen printing and is very stable with regard to the sheet resistance bending cycle.
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Affiliation(s)
- Fengfeng Zhao
- College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hui Quan
- Sinopec (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing 100013, China
| | - Shijun Zhang
- Sinopec (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing 100013, China
| | - Yihui Xu
- Sinopec Group, Beijing 100728, China
| | - Zheng Zhou
- College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guangxin Chen
- College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Correspondence: (G.C.); (Q.L.)
| | - Qifang Li
- College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Correspondence: (G.C.); (Q.L.)
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6
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Liu G, Lai X, Cheng X, Lei Y, Wang L, Wen X, Fan M, Gao J, Liu Y, Ma Q. Reactive carbamate surfactants: Synthesis, characterization, and improved rheological properties of hydrophobically modified polyacrylamide containing surfactant structures. J Appl Polym Sci 2022. [DOI: 10.1002/app.53529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Guiru Liu
- Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education Shaanxi University of Science &Technology Xi'an Shaanxi China
| | - Xiaojuan Lai
- Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education Shaanxi University of Science &Technology Xi'an Shaanxi China
| | - Xu Cheng
- Oil Production Technology Research Institute of the twelfth Oil Production Plant of Changqing Oilfield Branch Company Qingyang Gansu China
| | - Yutian Lei
- Oil Production Technology Research Institute of the twelfth Oil Production Plant of Changqing Oilfield Branch Company Qingyang Gansu China
| | - Lei Wang
- Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education Shaanxi University of Science &Technology Xi'an Shaanxi China
| | - Xin Wen
- Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education Shaanxi University of Science &Technology Xi'an Shaanxi China
| | - Meiling Fan
- Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education Shaanxi University of Science &Technology Xi'an Shaanxi China
| | - Jinhao Gao
- Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education Shaanxi University of Science &Technology Xi'an Shaanxi China
| | - Yong Liu
- Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education Shaanxi University of Science &Technology Xi'an Shaanxi China
| | - Qinqin Ma
- Key Laboratory of Auxiliary Chemistry &Technology for Chemical Industry, Ministry of Education Shaanxi University of Science &Technology Xi'an Shaanxi China
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7
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Chan DHH, Hunter SJ, Neal TJ, Lindsay C, Taylor P, Armes SP. Adsorption of sterically-stabilized diblock copolymer nanoparticles at the oil-water interface: effect of charged end-groups on interfacial rheology. SOFT MATTER 2022; 18:6757-6770. [PMID: 36040127 DOI: 10.1039/d2sm00835a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The RAFT aqueous emulsion polymerization of either methyl methacrylate (MMA) or benzyl methacrylate (BzMA) is conducted at 70 °C using poly(glycerol monomethacrylate) (PGMA) as a water-soluble precursor to produce sterically-stabilized diblock copolymer nanoparticles of approximately 30 nm diameter. Carboxylic acid- or morpholine-functional RAFT agents are employed to confer anionic or cationic functionality at the ends of the PGMA stabilizer chains, with a neutral RAFT agent being used as a control. Thus the electrophoretic footprint of such minimally-charged model nanoparticles can be adjusted simply by varying the solution pH. Giant (mm-sized) aqueous droplets containing such nanoparticles are then grown within a continuous phase of n-dodecane and a series of interfacial rheology measurements are conducted. The interfacial tension between the aqueous phase and n-dodecane is strongly dependent on the charge of the terminal group on the stabilizer chains. More specifically, neutral nanoparticles produce a significantly lower interfacial tension than either cationic or anionic nanoparticles. Moreover, adsorption of neutral nanoparticles at the n-dodecane-water interface produces higher interfacial elastic moduli than that observed for charged nanoparticles. This is because neutral nanoparticles can adsorb at much higher surface packing densities owing to the absence of electrostatic repulsive forces in this case.
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Affiliation(s)
- Derek H H Chan
- Dainton Building, Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK.
| | - Saul J Hunter
- Dainton Building, Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK.
| | - Thomas J Neal
- Dainton Building, Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK.
| | - Christopher Lindsay
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK.
| | - Philip Taylor
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK.
| | - Steven P Armes
- Dainton Building, Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, UK.
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8
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pH-sensitive particles of polymer-surfactant complexes based on a copolymer of N,N′-diallyl-N,N′-dimethylammonium chloride with maleic acid and sodium dodecyl sulfate. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105359] [Citation(s) in RCA: 1] [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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9
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Liu M, Chen Q, Li J, Liu Y, Yang X, Zhu F, He Z. Improvement of millimeter-scale double droplets stability through synergistic noncovalent interactions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Boon-In S, Theerasilp M, Crespy D. Marrying the incompatible for better: Incorporation of hydrophobic payloads in superhydrophilic hydrogels. J Colloid Interface Sci 2022; 622:75-86. [PMID: 35489103 DOI: 10.1016/j.jcis.2022.04.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 04/04/2022] [Accepted: 04/05/2022] [Indexed: 01/31/2023]
Abstract
HYPOTHESIS The entrapment of lyophobic in superhydrophilic hydrogels is challenging because of the intrinsic incompatibility between hydrophobic and hydrophilic molecules. To achieve such entrapment without affecting the hydrogel's formation, the electrospinning of nanodroplets or nanoparticles with a water-soluble polymer could reduce the incompatibility through the reduction of interfacial tension and the formation of a barrier film preventing coalescence or aggregation. EXPERIMENTS Nanodroplets or nanoparticles dispersion are electrospun in the presence of a hydrophilic polymer in hydrogel precursors. The dissolution of the hydrophilic nanofibers during electrospinning allows a redispersion of emulsion droplets and nanoparticles in the hydrogel's matrix. FINDINGS Superhydrophilic hydrogels with well-distributed hydrophobic nanodroplets or nanoparticles are obtained without detrimentally imparting the viscosity of hydrogel's precursors and the mechanical properties of the hydrogels. Compared with the incorporation of droplets without electrospinning, higher loadings of hydrophobic payload are achieved without premature leakage. This concept can be used to entrap hydrophobic agrochemicals, drugs, or antibacterial agents in simple hydrogels formulation.
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Affiliation(s)
- Supissra Boon-In
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand.
| | - Man Theerasilp
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand.
| | - Daniel Crespy
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand.
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11
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Ramirez JC, Hernández‐Belmares PJ, Herrera‐Ordonez J. On the association between poly(vinyl alcohol) and sodium dodecyl sulfate and its effect on liquid–liquid interfacial tension: A mathematical model. J SURFACTANTS DETERG 2022. [DOI: 10.1002/jsde.12584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jorge C. Ramirez
- Centro de Investigación en Química Aplicada (CIQA) Saltillo Coahuila Mexico
| | | | - Jorge Herrera‐Ordonez
- Centro de Física Aplicada y Tecnología Avanzada (CFATA), UNAM Campus Juriquilla Juriquilla Querétaro Mexico
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12
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Kiparissides C, Pladis P. On the prediction of suspension viscosity, grain morphology, and agitation power in
SPVC
reactors. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24262] [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]
Affiliation(s)
- Costas Kiparissides
- Chemical Process & Energy Resources Institute, CERTH Thessaloniki Greece
- Department of Chemical Engineering Aristotle University of Thessaloniki Thessaloniki Greece
| | - Prokopis Pladis
- Chemical Process & Energy Resources Institute, CERTH Thessaloniki Greece
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13
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Liu J, Wang L, Li Y, Wang J, Yang X. Adsorption properties of N-tetradecyl- N, N-dimethyl- N-(2,3-epoxy propyl) ammonium chloride with inorganic salts at air/water. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2020.1764851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Jiawei Liu
- Shandong Provincial Key Laboratory of Molecular Engineering, Qilu University of Technology-Shandong Academy of Science, Ji’nan, China
| | - Ling Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, Qilu University of Technology-Shandong Academy of Science, Ji’nan, China
| | - Yan Li
- Shandong Provincial Key Laboratory of Molecular Engineering, Qilu University of Technology-Shandong Academy of Science, Ji’nan, China
| | - Jingui Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, Qilu University of Technology-Shandong Academy of Science, Ji’nan, China
| | - Xiaodeng Yang
- Shandong Provincial Key Laboratory of Molecular Engineering, Qilu University of Technology-Shandong Academy of Science, Ji’nan, China
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14
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Jin Y, Liu D, Hu J. Effect of Surfactant Molecular Structure on Emulsion Stability Investigated by Interfacial Dilatational Rheology. Polymers (Basel) 2021; 13:polym13071127. [PMID: 33918141 PMCID: PMC8037813 DOI: 10.3390/polym13071127] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/26/2021] [Accepted: 03/27/2021] [Indexed: 01/15/2023] Open
Abstract
Polyglycerol polyricinolate (PGPR) and polyglycerol-2 dioleate were selected as model surfactants to construct water-in-oil (W/O) emulsions, and the effect of interfacial rheological properties of surfactant film on the stability of emulsions were investigated based on the interfacial dilatational rheological method. The hydrophobicity chain of PGPR is polyricinic acid condensed from ricinic acid, and that of polyglycerol-2 dioleate is oleic acid. Their dynamic interfacial tensions in 15 cycles of interfacial compression-expansion were determined. The interfacial dilatational viscoelasticity was analyzed by amplitude scanning in the range of 1–28% amplitude and frequency sweep in the range of 5–45 mHz under 2% amplitude. It was found that PGPR could quickly reach adsorption equilibrium and form interfacial film with higher interfacial dilatational viscoelastic modulus to resist the deformation of interfacial film caused by emulsion coalescence, due to its branched chain structure and longer hydrophobic chain, and the emulsion thus presented good stability. However, polyglycerol-2 dioleate with a straight chain structure had lower interfacial tension, and it failed to resist the interfacial disturbance caused by coalescence because of its lower interfacial dilatational viscoelastic modulus, and thus the emulsion was unstable. This study reveals profound understanding of the influence of branched structure of PGPR hydrophobic chain on the interfacial film properties and the emulsion stability, providing experimental reference and theoretical guidance for future design or improvement of surfactant.
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Affiliation(s)
- Yuejie Jin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
| | - Dingrong Liu
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
| | - Jinhua Hu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
- Synergetic Innovation Center of Food Safety and Nutrition, Jiangnan University, Wuxi 214122, China
- Correspondence:
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15
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Scurti S, Monti E, Rodríguez-Aguado E, Caretti D, Cecilia JA, Dimitratos N. Effect of Polyvinyl Alcohol Ligands on Supported Gold Nano-Catalysts: Morphological and Kinetics Studies. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:879. [PMID: 33808449 PMCID: PMC8066135 DOI: 10.3390/nano11040879] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 01/21/2023]
Abstract
The effect of polyvinyl alcohol (PVA) stabilizers and gold nanoparticles supported on active carbon (AuNPs/AC) was investigated in this article. Polymers with different molecular weights and hydrolysis degrees have been synthesized and used, like the stabilizing agent of Au nano-catalysts obtained by the sol-immobilization method. The reduction of 4-nitrophenol with NaBH4 has been used as a model reaction to investigate the catalytic activity of synthesized Au/AC catalysts. In addition, we report several characterization techniques such as ultraviolet-visible spectroscopy (UV-Vis), dynamic light scattering (DLS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) in order to correlate the properties of the polymer with the metal nanoparticle size and the catalytic activity. A volcano plot was observed linking the catalytic performance with hydrolysis degree and the maximum of the curve was identified at a value of 60%. The Au:PVA-60 weight ratio was changed in order to explain how the amount of the polymer can influence catalytic properties. The effect of nitroaromatic ring substituents on the catalytic mechanism was examined by the Hammett theory. Moreover, the reusability of the catalyst was investigated, with little to no decrease in activity observed over five catalytic cycles. Morphological and kinetic studies reported in this paper reveal the effect of the PVA polymeric stabilizer properties on the size and catalytic activity of supported gold nanoparticles.
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Affiliation(s)
- Stefano Scurti
- Industrial Chemistry “Toso Montanari” Department, University of Bologna, Viale Risorgimento 4, 40126 Bologna, Italy; (S.S.); (E.M.)
| | - Eleonora Monti
- Industrial Chemistry “Toso Montanari” Department, University of Bologna, Viale Risorgimento 4, 40126 Bologna, Italy; (S.S.); (E.M.)
| | - Elena Rodríguez-Aguado
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain; (E.R.-A.); (J.A.C.)
| | - Daniele Caretti
- Industrial Chemistry “Toso Montanari” Department, University of Bologna, Viale Risorgimento 4, 40126 Bologna, Italy; (S.S.); (E.M.)
| | - Juan Antonio Cecilia
- Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29071 Málaga, Spain; (E.R.-A.); (J.A.C.)
| | - Nikolaos Dimitratos
- Industrial Chemistry “Toso Montanari” Department, University of Bologna, Viale Risorgimento 4, 40126 Bologna, Italy; (S.S.); (E.M.)
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Schlappa S, Brenker LJ, Bressel L, Hass R, Münzberg M. Process Characterization of Polyvinyl Acetate Emulsions Applying Inline Photon Density Wave Spectroscopy at High Solid Contents. Polymers (Basel) 2021; 13:669. [PMID: 33672343 PMCID: PMC7926705 DOI: 10.3390/polym13040669] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 11/26/2022] Open
Abstract
The high solids semicontinuous emulsion polymerization of polyvinyl acetate using poly (vinyl alcohol-co-vinyl acetate) as protective colloid is investigated by optical spectroscopy. The suitability of Photon Density Wave (PDW) spectroscopy as inline Process Analytical Technology (PAT) for emulsion polymerization processes at high solid contents (>40% (w/w)) is studied and evaluated. Inline data on absorption and scattering in the dispersion is obtained in real-time. The radical polymerization of vinyl acetate to polyvinyl acetate using ascorbic acid and sodium persulfate as redox initiator system and poly (vinyl alcohol-co-vinyl acetate) as protective colloid is investigated. Starved-feed radical emulsion polymerization yielded particle sizes in the nanometer size regime. PDW spectroscopy is used to monitor the progress of polymerization by studying the absorption and scattering properties during the synthesis of dispersions with increasing monomer amount and correspondingly decreasing feed rate of protective colloid. Results are compared to particle sizes determined with offline dynamic light scattering (DLS) and static light scattering (SLS) during the synthesis.
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Affiliation(s)
- Stephanie Schlappa
- Department of Physical Chemistry, innoFSPEC, University of Potsdam, Am Muehlenberg 3, 14476 Potsdam, Germany; (L.J.B.); (L.B.); (R.H.); (M.M.)
| | - Lee Josephine Brenker
- Department of Physical Chemistry, innoFSPEC, University of Potsdam, Am Muehlenberg 3, 14476 Potsdam, Germany; (L.J.B.); (L.B.); (R.H.); (M.M.)
| | - Lena Bressel
- Department of Physical Chemistry, innoFSPEC, University of Potsdam, Am Muehlenberg 3, 14476 Potsdam, Germany; (L.J.B.); (L.B.); (R.H.); (M.M.)
| | - Roland Hass
- Department of Physical Chemistry, innoFSPEC, University of Potsdam, Am Muehlenberg 3, 14476 Potsdam, Germany; (L.J.B.); (L.B.); (R.H.); (M.M.)
- PDW Analytics GmbH, Geiselbergstraße 4, 14476 Potsdam, Germany
| | - Marvin Münzberg
- Department of Physical Chemistry, innoFSPEC, University of Potsdam, Am Muehlenberg 3, 14476 Potsdam, Germany; (L.J.B.); (L.B.); (R.H.); (M.M.)
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Zalloum N, Albino de Souza G, Martins TD. Single-Emulsion P(HB-HV) Microsphere Preparation Tuned by Copolymer Molar Mass and Additive Interaction. ACS OMEGA 2019; 4:8122-8135. [PMID: 31459903 PMCID: PMC6648277 DOI: 10.1021/acsomega.9b00824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 04/25/2019] [Indexed: 06/10/2023]
Abstract
Herein, we describe the production of poly(hydroxybutyrate-co-hydroxyvalerate) [P(HB-HV)]-based microspheres containing coumarin-6 (C6) or pyrene (Py) fluorophores as additives and models for hydrophobic and hydrophilic drug encapsulation. Their photophysical and morphological properties, as well as encapsulation efficiencies, are studied as this work aims to describe the influence of additive hydrophobicity/hydrophilicity on microparticle formation. These properties were studied by scanning electron microscopy, fluorescence confocal laser scanning microscopy (FCLSM), and steady-state fluorescence spectroscopy. The results show that the surfactant concentration, polymer molar mass, emulsification stirring rate, and the presence of the fluorophore and its nature are determinants of the P(HB-HV) microsphere properties. Also, encapsulation efficiency is shown to be governed by synergic effects of these parameters on the formation of microspheres. Moreover, size distribution is proved to be strongly influenced by the surfactant poly(vinyl alcohol) content. FCLSM showed that the fluorophores were efficiently encapsulated in P(HB-HV) microspheres at distinct distributions within the copolymer matrix. Surprisingly, nanospheres were observed in the microsphere surface, suggesting that microspheres are formed from nanosphere coalescence.
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Affiliation(s)
- Neife
Lilian Zalloum
- Chemistry
Institute, State University of Campinas, P.O. Box 6154, 13083-971 Campinas, São Paulo, Brazil
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18
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Zein/gum Arabic nanoparticle-stabilized Pickering emulsion with thymol as an antibacterial delivery system. Carbohydr Polym 2018; 200:416-426. [DOI: 10.1016/j.carbpol.2018.08.025] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/06/2018] [Accepted: 08/07/2018] [Indexed: 12/19/2022]
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Desbrières J, López-Gonzalez E, Aguilera-miguel A, Sadtler V, Marchal P, Castel C, Choplin L, Durand A. Dilational rheology of oil/water interfaces covered by amphiphilic polysaccharides derived from dextran. Carbohydr Polym 2017; 177:460-468. [DOI: 10.1016/j.carbpol.2017.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/05/2017] [Accepted: 09/05/2017] [Indexed: 11/30/2022]
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20
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Pei X, Zhai K, Liang X, Deng Y, Tan Y, Wang P, Xu K. Interfacial Activity of Starch-Based Nanoparticles at the Oil-Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:3787-3793. [PMID: 28343397 DOI: 10.1021/acs.langmuir.7b00035] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Understanding the interfacial activity of polysaccharide nanoparticles adsorbed at oil-water interfaces is essential and important for the application of these nanoparticles as Pickering stabilizers. The interfacial properties of starch-based nanospheres (SNPs) at the interface of an n-hexane-water system were investigated by monitoring the interfacial tension at different bulk concentrations. The three-phase contact angle (θ) and the adsorption energy (ΔE) increased with increasing size and degree of substitution with octenyl succinic groups (OSA) in the particles. Compared with the OSA-modified starch (OSA-S) macromolecule, the SNPs effectively reduced the interfacial tension of the n-hexane-water system at a relatively higher concentration. These results and the method reported herein are useful for selecting and preparing polysaccharide nanoparticles as Pickering stabilizers for oil-water emulsions.
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Affiliation(s)
- Xiaopeng Pei
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China
- University of Science and Technology of China , Hefei 230026, PR China
| | - Kankan Zhai
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China
- University of Science and Technology of China , Hefei 230026, PR China
| | - Xuechen Liang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Yukun Deng
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China
- University of Chinese Academy of Sciences , Beijing 100049, PR China
| | - Ying Tan
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China
| | - Pixin Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China
| | - Kun Xu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China
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Merekalova ND, Bondarenko GN, Denisova YI, Krentsel LB, Litmanovich AD, Kudryavtsev YV. Effect of chain structure on hydrogen bonding in vinyl acetate – vinyl alcohol copolymers. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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