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Booth JR, Davies JD, Bon SAF. ω-Unsaturated methacrylate macromonomers as reactive polymeric stabilizers in mini-emulsion polymerization. Polym Chem 2022. [DOI: 10.1039/d1py01664d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer latexes of poly(benzyl methacrylate) P(BzMA) were synthesized by mini-emulsion polymerization, using hexadecane as the hydrophobe and ω-unsaturated methacrylate-based macromonomers as a reactive stabilizer. The amphiphilic macromonomers were synthesized by...
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Wang G, Cai G, Zhang M, Wang Z, Li C, Zhang Y. Synthesis of polymeric emulsifiers based on ketoaldehyde resin and their application in emulsifying styrene/water two‐phase system. J Appl Polym Sci 2021. [DOI: 10.1002/app.52107] [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)
- Guolin Wang
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Guiting Cai
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Menghao Zhang
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Ziyu Wang
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Chaofeng Li
- School of Chemical Engineering Zhengzhou University Zhengzhou China
| | - Yanwu Zhang
- School of Chemical Engineering Zhengzhou University Zhengzhou China
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Nagura K, Bogdanov A, Chumakova N, Vorobiev AK, Moronaga S, Imai H, Matsuda T, Noda Y, Maeda T, Koizumi S, Sakamoto K, Amano T, Yoshino F, Kato T, Komatsu N, Tamura R. Size-tunable MRI-visible nitroxide-based magnetic mixed micelles: preparation, stability, and theranostic application. NANOTECHNOLOGY 2019; 30:224002. [PMID: 30743248 DOI: 10.1088/1361-6528/ab0627] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal-free magnetic mixed micelles (mean diameter: 16 nm) composed of biocompatible surfactant Tween 80 and hydrophobic pyrrolidine-N-oxyl radical were prepared by mixing them in phosphate-buffered saline. The magnetic mixed micelles were characterized by dynamic light scattering and small angle neutron scattering measurements. The stability of the micelles is found to depend on the length of alkyl side chain in the nitroxide compounds and degree of unsaturation in the hydrophobic chain in the surfactant. The size of the mixed micelle can be tuned by changing the molar ratio of Tween 80 and nitroxyl radical. In view of theranostic application of the micelle, the cytotoxicity and stability in a physiological environment was investigated; the mixed micelle exhibited no cytotoxicity, high colloidal stability and high resistance towards reduction by large excess ascorbic acid. The in vitro and in vivo magnetic resonance imaging (MRI) revealed sufficient contrast enhancement in the proton longitudinal relaxation time (T 1) weighted images. In addition, hydrophobic fluorophores and an anticancer drug are stably encapsulated in the mixed micelles and showed fluorescence (FL) upon reduction by ascorbic acid and cytotoxicity to cancer cells, respectively. For example, the paclitaxel-loaded mixed micelles efficiently suppressed cancer cell growth. Furthermore, they were found to give higher MRI contrast (higher r 1 value) in vitro than the micelles without paclitaxel. The magnetic mixed micelles presented here are promising theranostic agents in nanomedicine due to their high biocompatibility and high resistivity towards reduction as well as functioning as a drug carrier in therapy and MR or FL imaging probe in diagnosis.
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Affiliation(s)
- Kota Nagura
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
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Yu X, Pu W, Chen D, Zhang J, Zhou F, Zhang R, Gu S. Degradable cross-linked polymeric microsphere for enhanced oil recovery applications. RSC Adv 2015. [DOI: 10.1039/c5ra05366h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
DCPM is served as conformance control agents and polymer flooding within deep formation.
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Affiliation(s)
- Xiaorong Yu
- School of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- People's Republic of China
| | - Wanfen Pu
- School of Oil & Natural Gas Engineering
- Southwest Petroleum University
- Chengdu
- People's Republic of China
| | - Dajun Chen
- School of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- People's Republic of China
| | - Jian Zhang
- School of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- People's Republic of China
| | - Fei Zhou
- Drilling & Production Technology Research Institute of CNPC Liaohe Oilfield
- Panjin
- People's Republic of China
| | - Rui Zhang
- School of Chemistry and Chemical Engineering
- Southwest Petroleum University
- Chengdu
- People's Republic of China
| | - Siman Gu
- State Key Laboratory of Oil and Gas Geology and Exploitation
- South West Petroleum University
- Chengdu
- People's Republic of China
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Zhang YW, Chen Y, Zhao JX. Facile Fabrication of Antibacterial Core–Shell Nanoparticles Based on PHMG Oligomers and PAA Networks via Template Polymerization. Aust J Chem 2014. [DOI: 10.1071/ch13295] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Antibacterial core–shell nanoparticles based on poly(hexamethylene guanidine hydrochloride) (PHMG) oligomers and poly(acrylic acid) (PAA) networks are efficiently fabricated via a facile one-step co-polymerization of acrylic acid and N,N′-methylenebisacrylamide on PHMG templates in aqueous solution. Dynamic light scattering, Fourier-transform infrared spectroscopy, and transmission electron microscopy observations were used to characterize the size, morphology, and structure of the nanoparticles, as well as the interactions between the components. Also, the stability of the nanoparticle dispersion against storage, pH value, salt, and temperature was investigated. The results show that the crosslinked PAA/PHMG nanoparticles are stabilized by electrostatic interactions. The core–shell structure of the nanoparticles was confirmed by transmission electron microscopy observation. The size of the nanoparticles increases substantially with extension of storage or with increase of the salt concentration. The nanoparticle dispersion is stable in a pH range of 2.0–4.0. The size change of the nanoparticles with pH of the medium is parabolic, and the minimum size is reached at pH 3.0. A rise of temperature leads to a slight and recoverable size increase of the nanoparticles. Antibacterial efficiency was evaluated quantitatively against Escherichia coli and Staphylococcus aureus by the plating method according to Standard JC/T 897–2002. The antibacterial activity against these two bacteria are both above 99.0 % at a nanoparticle concentration of 5 mg mL–1. This makes the nanoparticle dispersion a good candidate for the application of antibacterial water-based coatings and textiles coating.
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Li L, Yang J, Zhou J. Linear-, Cyclic-, and Multiblock Amphiphilic Polyelectrolytes as Surfactants in Emulsion Polymerization: Role of Topological Structure. Macromolecules 2013. [DOI: 10.1021/ma3022025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lianwei Li
- Hefei National
Laboratory for
Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei,
China 230026
| | - Jinxian Yang
- Hefei National
Laboratory for
Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei,
China 230026
| | - Jianfeng Zhou
- Research Center
for Analysis
and Measurement, Donghua University, Shanghai,
China 201620
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de Wet-Roos D, Knoetze JH. Modeling composite emulsion polymerization kinetics. INT J CHEM KINET 2012. [DOI: 10.1002/kin.20747] [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]
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Cao J, Pan X, Huang W, Wang Y, Hua D, Zhu X, Liang H. Synthesis of cationic poly(4-vinylpyridine)-functionalized colloidal particles by emulsion polymerization with reactive block copolymer for protein adsorption. J Colloid Interface Sci 2012; 381:137-42. [DOI: 10.1016/j.jcis.2012.05.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 05/06/2012] [Accepted: 05/08/2012] [Indexed: 10/28/2022]
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Synthesis of surface-functionalized polystyrene sub-micron spheres using novel amphiphilic comonomer. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Rufier C, Reufer M, Dietsch H, Schurtenberger P. Single step hybrid coating process to enhance the electrosteric stabilization of inorganic particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6622-6627. [PMID: 21528867 DOI: 10.1021/la200525u] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report on a single-step coating process and the resulting colloidal stability of silica-coated spindle-type hematite nanoparticles (NPs) decorated with a layer of poly(acrylic acid) (PAA) polyelectrolyte chains that are partially incorporated into the silica shell. The stability of PAA coated NPs as a function of pH and salt concentration in water was compared to bare hematite particles and simple silica-coated hematite NPs, studying their electrophoretic mobility and the hydrodynamic radius by dynamic light scattering. Particles coated with this method were found to be more stable upon the addition of salt at pH 7, and their aggregation at the pH of the isoelectric point is reversible. The hybrid coating appears to increase the colloidal stability in aqueous media due to the combination of the decrease of the isoelectric point and the electrosteric stabilization. This coating method is not limited to hematite particles but can easily be adapted to any silica-coatable particle.
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Affiliation(s)
- Chantal Rufier
- Adolphe Merkle Institute and Fribourg Center for Nanomaterials, University of Fribourg, Route de l'Ancienne Papeterie P.O. Box 209, 1723 Marly 1, Switzerland
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Synthesis of core–shell polystyrene nanoparticles by surfactant free emulsion polymerization using macro-RAFT agent. J Colloid Interface Sci 2011; 354:506-10. [DOI: 10.1016/j.jcis.2010.11.021] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 11/07/2010] [Accepted: 11/09/2010] [Indexed: 11/23/2022]
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Sugihara S, Sugihara (nee Nishikawa) K, Armes SP, Ahmad H, Lewis AL. Synthesis of Biomimetic Poly(2-(methacryloyloxy)ethyl phosphorylcholine) Nanolatexes via Atom Transfer Radical Dispersion Polymerization in Alcohol/Water Mixtures. Macromolecules 2010. [DOI: 10.1021/ma101136v] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shinji Sugihara
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire S3 7HF, U.K
| | | | - Steven P. Armes
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire S3 7HF, U.K
| | - Hasan Ahmad
- Department of Chemistry, Rajshahi University, Rajshahi-6205, Bangladesh
| | - Andrew L. Lewis
- Biocompatibles UK Ltd., Chapman House, Farnham Business Park, Weydon Lane, Farnham, Surrey GU9 8QL, U.K
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Chen YS, Wang JS, Hou ZS, Kan CY. Preparation of polymeric microspheres with high content of sulphonate groups. CHINESE CHEM LETT 2010. [DOI: 10.1016/j.cclet.2009.08.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hua D, Tang J, Jiang J, Zhu X, Bai R. A Facile Approach for Preparation of Phenylphosphinic Acid-Functionalized PSt Microspheres by Emulsion Polymerization Using Amphiphilic Macro-RAFT Agent as Emulsifier. Macromolecules 2009. [DOI: 10.1021/ma9018334] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daoben Hua
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jing Tang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jianlin Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Xiulin Zhu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Ruke Bai
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
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Ahmad H, Dupin D, Armes SP, Lewis AL. Synthesis of biocompatible sterically-stabilized poly(2-(methacryloyloxy)ethyl phosphorylcholine) latexes via dispersion polymerization in alcohol/water mixtures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:11442-11449. [PMID: 19588940 DOI: 10.1021/la901631a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Poly(2-(methacryloyloxy)ethyl phosphorylcholine) (PMPC) is soluble in either 2-propanol or water but becomes insoluble in certain alcohol-rich 2-propanol/water mixtures. We have exploited this unusual cononsolvency behavior in order to prepare new biocompatible sterically stabilized PMPC latexes via nonaqueous dispersion polymerization in 2-propanol/water mixtures. All polymerizations were conducted in the presence of monomethoxy-capped poly(ethylene glycol) methacrylate (PEGMA) as a reactive stabilizer, with some formulations including ethylene glycol dimethacrylate (EGDMA) as a cross-linker. Under optimized conditions, unimodal size distributions could be obtained with a mean latex diameter of approximately 1 microm, as judged by laser diffraction and DLS. The mean latex diameter depended on both the PEGMA and initiator concentration but was almost independent of the cross-linking density. Smaller PMPC latexes were obtained by increasing the alcohol content of the dispersion medium. On dilution with water, these latexes acquired microgel character. The microgel solution viscosity was insensitive to added salt due to the so-called "antipolyelectrolyte" effect, which is characteristic of polyzwitterions. Finally, copolymerization of MPC with a fluorescein-based methacrylic comonomer produced fluorescently labeled PMPC latexes, which may have potential biomedical applications.
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Affiliation(s)
- Hasan Ahmad
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire S3 7HF, UK
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