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Ren G, Li B, Ren L, Di W, Tian L, Zhang P, Shao W, He J, Sun D. Dynamic Covalent Nanoparticles for Acid-Responsive Nonaqueous Pickering Emulsions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6632-6640. [PMID: 34042453 DOI: 10.1021/acs.langmuir.1c00097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Acid-responsive nonaqueous (glycerol in n-decane) Pickering emulsions were prepared using preferentially oil-wetted dynamic covalent silica (SiO2-pDB) nanoparticles as the Pickering emulsifiers. The acid-responsive Pickering emulsifier SiO2-pDB was prepared based on a Schiff base reaction between amino silica (SiO2-NH2) and p-decanoxybenzaldehyde (pDBA). The formation of SiO2-pDB was characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, and elemental analysis. The preferentially oil-wetted character of SiO2-pDB was indicated by contact angle measurement. Stable nonaqueous Pickering emulsions were prepared using preferentially oil-wetted SiO2-pDB as the Pickering emulsifier. However, after adjusting the nonaqueous Pickering emulsions to an acidic environment, complete phase separation occurred. In the acidic environment, preferentially oil-wetted SiO2-pDB decomposed into hydrophilic SiO2-NH2 and hydrophobic pDBA due to the decomposition of the dynamic imine bond in the SiO2-pDB. Then, the hydrophilic SiO2-NH2 and hydrophobic pDBA desorbed from the two-phase interface, resulting in complete phase separation of the initially stable nonaqueous Pickering emulsions. The acid-responsive nonaqueous Pickering emulsions show great potential in application in water sensitive systems, such as oil-based drilling fluids.
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Affiliation(s)
- Gaihuan Ren
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou, Henan 450007, P. R. China
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, P. R. China
| | - Bo Li
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou, Henan 450007, P. R. China
| | - Lulu Ren
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, P. R. China
| | - Wenwen Di
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, P. R. China
| | - Lulu Tian
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou, Henan 450007, P. R. China
| | - Pan Zhang
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou, Henan 450007, P. R. China
| | - Weili Shao
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou, Henan 450007, P. R. China
| | - Jianxin He
- Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou, Henan 450007, P. R. China
| | - Dejun Sun
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, Shandong 250100, P. R. China
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Iurciuc-Tincu CE, Cretan MS, Purcar V, Popa M, Daraba OM, Atanase LI, Ochiuz L. Drug Delivery System Based on pH-Sensitive Biocompatible Poly(2-vinyl pyridine)-b-poly(ethylene oxide) Nanomicelles Loaded with Curcumin and 5-Fluorouracil. Polymers (Basel) 2020; 12:polym12071450. [PMID: 32605272 PMCID: PMC7408444 DOI: 10.3390/polym12071450] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/23/2020] [Accepted: 06/23/2020] [Indexed: 12/15/2022] Open
Abstract
Smart polymeric micelles (PMs) are of practical interest as nanocarriers for the encapsulation and controlled release of hydrophobic drugs. Two hydrophobic drugs, naturally-based curcumin (Cur) and synthetic 5-fluorouracil (5-FU), were loaded into the PMs formed by a well-defined pH-sensitive poly(2-vinyl pyridine)-b-poly(ethylene oxide) (P2VP90-b-PEO398) block copolymer. The influence of the drug loading on the micellar sizes was investigated by dynamic light scattering (DLS) and it appears that the size of the PMs increases from around 60 to 100 nm when Cur is loaded. On the contrary, the loading of the 5-FU has a smaller effect on the micellar sizes. This difference can be attributed to higher molar mass of Cur with respect to 5-FU but also to higher loading efficiency of Cur, 6.4%, compared to that of 5-FU, 5.8%. In vitro drug release was studied at pH 2, 6.8, and 7.4, and it was observed that the pH controls the release of both drugs. At pH 2, where the P2VP sequences from the “frozen-in” micellar core are protonated, the drug release efficiencies exceed 90%. Moreover, it was demonstrated, by in vitro assays, that these PMs are hemocompatible and biocompatible. Furthermore, the PMs protect the Cur against the photo-degradation, whereas the non-ionic PEO corona limits the adsorption of bovine serum albumin (BSA) protein on the surface. This study demonstrates that these pH-sensitive PMs are suitable for practical utilization as human-safe and smart, injectable drug delivery systems.
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Affiliation(s)
- Camelia-Elena Iurciuc-Tincu
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, University street, no. 16, 700115 Iaşi, Romania; (C.-E.I.-T.); (M.S.C.); (L.O.)
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 700050 Iaşi, Romania;
| | - Monica Stamate Cretan
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, University street, no. 16, 700115 Iaşi, Romania; (C.-E.I.-T.); (M.S.C.); (L.O.)
| | - Violeta Purcar
- National R&D Institute for Chemistry and Petrochemistry—ICECHIM, Splaiul Independentei 202, 6th district, 060021 Bucharest, Romania;
| | - Marcel Popa
- Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Protection of the Environment, “Gheorghe Asachi” Technical University, 700050 Iaşi, Romania;
- Academy of Romanian Scientists, Splaiul Independentei Street No. 54, 050085 Bucharest, Romania
| | - Oana Maria Daraba
- Faculty of Dental Medicine, “Apollonia” University of Iasi, Pacurari street, no. 11, 700355 Iași, Romania;
| | - Leonard Ionut Atanase
- Faculty of Dental Medicine, “Apollonia” University of Iasi, Pacurari street, no. 11, 700355 Iași, Romania;
- Correspondence: or
| | - Lacramioara Ochiuz
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Grigore T. Popa” University of Medicine and Pharmacy, University street, no. 16, 700115 Iaşi, Romania; (C.-E.I.-T.); (M.S.C.); (L.O.)
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Sun R, Xia N, Xia Q. Non-aqueous nanoemulsions as a new strategy for topical application of astaxanthin. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1635027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Rui Sun
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, Nanjing, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou, China
- National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing, China
| | - Nan Xia
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, Nanjing, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou, China
- National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing, China
| | - Qiang Xia
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, Nanjing, China
- Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou, China
- National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing, China
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Fernandez-Rodriguez MA, Binks BP, Rodriguez-Valverde MA, Cabrerizo-Vilchez MA, Hidalgo-Alvarez R. Particles adsorbed at various non-aqueous liquid-liquid interfaces. Adv Colloid Interface Sci 2017; 247:208-222. [PMID: 28219622 DOI: 10.1016/j.cis.2017.02.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 02/05/2017] [Indexed: 02/02/2023]
Abstract
Particles adsorbed at liquid interfaces are commonly used to stabilise water-oil Pickering emulsions and water-air foams. The fundamental understanding of the physics of particles adsorbed at water-air and water-oil interfaces is improving significantly due to novel techniques that enable the measurement of the contact angle of individual particles at a given interface. The case of non-aqueous interfaces and emulsions is less studied in the literature. Non-aqueous liquid-liquid interfaces in which water is replaced by other polar solvents have properties similar to those of water-oil interfaces. Nanocomposites of non-aqueous immiscible polymer blends containing inorganic particles at the interface are of great interest industrially and consequently more work has been devoted to them. By contrast, the behaviour of particles adsorbed at oil-oil interfaces in which both oils are immiscible and of low dielectric constant (ε<3) is scarcely studied. Hydrophobic particles are required to stabilise these oil-oil emulsions due to their irreversible adsorption, high interfacial activity and elastic shell behaviour.
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Affiliation(s)
- Miguel Angel Fernandez-Rodriguez
- Biocolloid and Fluid Physics Group, Applied Physics Department, Faculty of Sciences, University of Granada, 18071-E Granada, Spain.
| | - Bernard P Binks
- School of Mathematics and Physical Sciences, University of Hull, Hull HU6 7RX, UK
| | - Miguel Angel Rodriguez-Valverde
- Biocolloid and Fluid Physics Group, Applied Physics Department, Faculty of Sciences, University of Granada, 18071-E Granada, Spain
| | - Miguel Angel Cabrerizo-Vilchez
- Biocolloid and Fluid Physics Group, Applied Physics Department, Faculty of Sciences, University of Granada, 18071-E Granada, Spain
| | - Roque Hidalgo-Alvarez
- Biocolloid and Fluid Physics Group, Applied Physics Department, Faculty of Sciences, University of Granada, 18071-E Granada, Spain
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Wang Q, Hu C, Zoghbi A, Huang J, Xia Q. Oil-in-oil-in-water pre-double emulsions stabilized by nonionic surfactants and silica particles: A new approach for topical application of rutin. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.02.067] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Water dispersibility of non-aqueous emulsions stabilized and viscosified by a poly(butadiene)-poly(2-vinylpyridine)-poly(ethylene oxide) (PBut-P2VP-PEO) triblock copolymer. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.10.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Atanase LI, Riess G. PEG 400/Paraffin oil non-aqueous emulsions stabilized by PBut-Block-P2VP block copolymers. J Appl Polym Sci 2014. [DOI: 10.1002/app.41390] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Leonard Ionut Atanase
- University of Haute Alsace; Ecole Nationale Supérieure de Chimie de Mulhouse, Laboratoire de Photochimie et d'Ingénierie Macromoléculaires; 3 rue Alfred Werner 68093 Mulhouse Cedex France
| | - Gérard Riess
- University of Haute Alsace; Ecole Nationale Supérieure de Chimie de Mulhouse, Laboratoire de Photochimie et d'Ingénierie Macromoléculaires; 3 rue Alfred Werner 68093 Mulhouse Cedex France
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