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Lugovitskaya TN, Kolmachikhina EB. Associative Behavior of Lignosulphonates in Moderately Concentrated Water, Water-Salt, and Water-Alcoholic Media. Biomacromolecules 2021; 22:3323-3331. [PMID: 34291631 DOI: 10.1021/acs.biomac.1c00441] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Industrial derivatives of lignin lignosulfonates are produced during sulfite delignification of wood. They are characterized by a wide molecular weight distribution, polyfunctionality, and lack of crystallinity. The presence of hydrophobic and hydrophilic domains in the lignosulfonate macromolecular system determines the amphiphilic and polyelectrolyte properties of this biopolymer. As a polyelectrolyte, lignosulfonates (LSs) show complex conformational and phase behavior, which can be controlled by a wide range of external factors (ionic strength, medium acidity, solvent polarity, etc.). Herein, we present the results of a study of the associative behavior of three lignosulfonate samples with different molecular weight distributions (Mw 9250-46 300) and structural and cationic (Na+, Ca2+) composition. The effects of the concentration of LS (0.2-200.0 g/dm3), temperature (293-353 K), ionic strength of the medium (KCl, 0.08-0.80 mol), and ethanol additives (0.6-73.0 vol %) on the bulk and surface properties of lignosulfonates have been revealed. It was assumed that the LS association in solutions is a consequence of the processes of counterionic condensation with the formation of ionic pairs and multiplets. The binding of counterions is facilitated by an increase in the ionic strength of the medium and ethyl alcohol additives.
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Affiliation(s)
- Tatyana Nikolaevna Lugovitskaya
- Ural Federal State University Named after the First President of Russia B. N. Yeltsin, Institute of New Materials and Technologies, 620002 ul. Mira, 19, Yekaterinburg, Russia
| | - Elvira Baryevna Kolmachikhina
- Ural Federal State University Named after the First President of Russia B. N. Yeltsin, Institute of New Materials and Technologies, 620002 ul. Mira, 19, Yekaterinburg, Russia
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Zamyshlyayeva OG, Ionychev BN, Frolova AI, Baten’kin MA, Simonova MA, Kopylova NA, Zaitsev SD, Semchikov YD. Controlled Synthesis of Methacrylic Acid-Methyl Acrylate Copolymers and Their Properties at Various Interfaces. RUSS J APPL CHEM+ 2019. [DOI: 10.1134/s1070427219060077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Litmanovich EA, Chernikova EV, Zhirnov AE. Influence of chain microstructure of acrylic acid and 4-vinylpyridine copolymers on their aggregative stability and adsorption from aqueous solutions. POLYMER SCIENCE SERIES C 2017. [DOI: 10.1134/s1811238217010064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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[Preparation of nanoparticles for sustained insulin release using poly (ethylene glycol) -poly (ε-caprolactone)-poly (N, N-diethylamino-2-ethylmethaerylate)]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2017. [PMID: 28736379 PMCID: PMC6765507 DOI: 10.3969/j.issn.1673-4254.2017.07.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVE To prepare an insulin-loaded nanoparticle assembled using pH-sensitive poly(ethylene glycol)-poly(ε-caprolactone)-poly(N,N-diethylamino-2-ethylmethaerylate) (mPEG-PCL-PDEAEMA) and investigate its performance of sustained insulin release in vitro and its hypoglycemic effects in diabetic rats. METHDOS: mPEG-PCL-PDEAEMA triblock copolymers with different hydrophobic lengths were synthesized by ring opening polymerization (ROP) combined with atom transfer radical polymerization (ATRP). The copolymers were characterized using Fourier-transform Infrared (FT-IR) spectroscopy and proton nuclear magnetic resonance spectroscopy (1H-NMR). Insulin-loaded nanoparticles were prepared by nanoprecipitation technique, in which the reversible swelling of the pH-sensitive material was used for insulin loading and release. The obtained nanoparticles were further confirmed by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The entrapment efficiency (EE%), drug loading (DL%) and in vitro release characteristics of the insulin- loaded nanoparticles were assessed using BCA protein assay kit. The hypoglycemic effects of the nanoparticles were evaluated by monitoring the glucose levels. RESULTS The size of the nanoparticles decreased as pH value increased within the range of 1.2 to 7.4. Using copolymers mPEG5k-PCL13k- PDEAEMA10k and mPEG5k-PCL10k-PDEAEMA10k as the drug carriers, the nanoparticles prepared with an optimal insulin-coplymer mass ratio of 90% had an average size of 181.9∓6.67 nm and 169∓7.1 nm, maximal EE% of (81.99∓1.77)% and (53.12∓0.62)%, and maximal DL% of (42.46∓0.53)% and (32.34∓0.26)%, respectively. Compared with free insulin, the insulin-loaded nanoparticles was capable of sustained insulin release and the release rate was lowered as the hydrophobic length increases. In diabetic rats, the insulin-loaded nanoparticles based on mPEG5k-PCL13k- PDEAEMA10k maintained a sustained hypoglycemic effect for 48 h, which was significantly longer than the time of free insulin. CONCLUSION The pH-sensitive triblock copolymer mPEG-PCL-PDEAEMA can serve as a promising candidate of carrier for sustained release of insulin.
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Self-Assembly of Amphiphilic Block Copolymers in Selective Solvents. FLUORESCENCE STUDIES OF POLYMER CONTAINING SYSTEMS 2016. [DOI: 10.1007/978-3-319-26788-3_2] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Li F, Schellekens M, de Bont J, Peters R, Overbeek A, Leermakers FAM, Tuinier R. Self-Assembled Structures of PMAA–PMMA Block Copolymers: Synthesis, Characterization, and Self-Consistent Field Computations. Macromolecules 2015. [DOI: 10.1021/ma501878n] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Feng Li
- DSM ChemTech R&D, PO Box 18, 6160 MD Geleen, The Netherlands
| | - Mike Schellekens
- DSM Coating Resins, Sluisweg 12, 5145
PE Waalwijk, The Netherlands
| | - Jens de Bont
- DSM Coating Resins, Sluisweg 12, 5145
PE Waalwijk, The Netherlands
| | - Ron Peters
- DSM Coating Resins, Sluisweg 12, 5145
PE Waalwijk, The Netherlands
| | - Ad Overbeek
- DSM Coating Resins, Sluisweg 12, 5145
PE Waalwijk, The Netherlands
| | - Frans A. M. Leermakers
- Laboratory
of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
| | - Remco Tuinier
- DSM ChemTech R&D, PO Box 18, 6160 MD Geleen, The Netherlands
- Van
’t Hoff laboratory for Physical and Colloid Chemistry, Department
of Chemistry, Debye Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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Iatridi Z, Georgiadou V, Menelaou M, Dendrinou-Samara C, Bokias G. Application of hydrophobically modified water-soluble polymers for the dispersion of hydrophobic magnetic nanoparticles in aqueous media. Dalton Trans 2014; 43:8633-43. [DOI: 10.1039/c4dt00393d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Oleylamine-coated CoFe2O4 magnetic nanoparticles were successfully encapsulated into hydrophobically modified water-soluble polymers. The resulting hydrophilic nanohybrids exhibit promising r2-relaxivity properties.
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Affiliation(s)
| | - Violetta Georgiadou
- Department of Chemistry
- Aristotle University of Thessaloniki
- GR-54124 Thessaloniki, Greece
| | - Melita Menelaou
- Department of Chemistry
- Aristotle University of Thessaloniki
- GR-54124 Thessaloniki, Greece
| | | | - Georgios Bokias
- Department of Chemistry
- University of Patras
- GR-26504 Patras, Greece
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Polymeric micelle as the pseudostationary phase in electrokinetic chromatography. J Chromatogr A 2012; 1245:190-8. [DOI: 10.1016/j.chroma.2012.05.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 04/28/2012] [Accepted: 05/09/2012] [Indexed: 11/21/2022]
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Yao B, Zhu Q, Liu H, Qiao L, Hao J, Qi F. Conformation and aggregation behavior of poly(ethylene glycol)-b-poly(lactic acid) amphiphilic copolymer chains in dilute/semidilute THF solutions. J Appl Polym Sci 2012. [DOI: 10.1002/app.36613] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cheng C, Ma L, Wu D, Ren J, Zhao W, Xue J, Sun S, Zhao C. Remarkable pH-sensitivity and anti-fouling property of terpolymer blended polyethersulfone hollow fiber membranes. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2011.05.028] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Das A, Ghosh S, Ray AR. Unveiling the self-assembly behavior of copolymers of AAc and DMAPMA in situ to form smart hydrogels displaying nanogels-within-macrogel hierarchical morphology. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.05.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kulebyakina AI, Lysenko EA, Chelushkin PS, Kabanov AV, Zezin AB. Self-assembly of an amphiphilic diblock copolymer in aqueous solutions: Effect of linear charge density of an ionogenic block. POLYMER SCIENCE SERIES A 2010. [DOI: 10.1134/s0965545x10060027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shao G, Han R, Ma Y, Tang M, Xue F, Sha Y, Wang Y. Bionanoprobes with Excellent Two-Photon-Sensitized Eu3+ Luminescence Properties for Live Cell Imaging. Chemistry 2010; 16:8647-51. [DOI: 10.1002/chem.201001367] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Giordanengo R, Viel S, Hidalgo M, Allard-Breton B, Thévand A, Charles L. Analytical strategy for the molecular weight determination of random copolymers of poly(methyl methacrylate) and poly(methacrylic acid). JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2010; 21:1075-1085. [PMID: 20202862 DOI: 10.1016/j.jasms.2010.02.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 02/01/2010] [Accepted: 02/06/2010] [Indexed: 05/28/2023]
Abstract
Molecular weight characterization of random amphiphilic copolymers currently represents an analytical challenge. In particular, molecules composed of methacrylic acid (MAA) and methyl methacrylate (MMA) as the repeat units raise issues in commonly used techniques. The present study shows that when random copolymers cannot be properly ionized by MALDI, and hence detected and measured in MS, one possible analytical strategy is to transform them into homopolymers, which are more amenable to this ionization technique. Then, by combining the molecular weight of the so-obtained homopolymers, as measured by MS, with the relative molar proportion of the MMA and MMA units, as given by (1)H NMR spectrum, one can straightforwardly estimate the molecular weight of the initial copolymer. A methylation reaction was performed to transform MAA-MMA copolymer samples into PMMA homopolymers, using trimethylsilyldiazomethane as a derivatization agent. Weight average molecular weight (M(w)) parameters of the MAA-MMA copolymers could then be derived from M(w) values obtained for the methylated MAA-MMA molecules by MALDI, which were also validated by pulsed gradient spin echo (PGSE) NMR. An alkene function in one of the studied copolymer end-groups was also shown to react with the methylation agent, giving rise to MMA-like polymeric by-products characterized by tandem mass spectrometry and which could be avoided by adjusting the amount of the trimethylsilyldiazomethane in the reaction medium.
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Affiliation(s)
- Rémi Giordanengo
- Universités Aix-Marseille I, II, and III-CNRS, UMR 6264: Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, Marseille, France
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SYNTHESIS AND SELFASSEMBLY OF AMPHIPHILIC ABA TRIBLOCK COPOLYMER via COMBINATION OF ROMP AND ATRP. ACTA POLYM SIN 2009. [DOI: 10.3724/sp.j.1105.2009.00345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Giordanengo R, Viel S, Hidalgo M, Allard-Breton B, Thévand A, Charles L. Structural characterization of a poly(methacrylic acid)-poly(methyl methacrylate) copolymer by nuclear magnetic resonance and mass spectrometry. Anal Chim Acta 2009; 654:49-58. [PMID: 19850168 DOI: 10.1016/j.aca.2009.06.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2009] [Revised: 06/16/2009] [Accepted: 06/18/2009] [Indexed: 12/01/2022]
Abstract
Mass spectrometry (MS) and nuclear magnetic resonance (NMR) have been combined to achieve the complete microstructural characterization of a poly(methacrylic acid)-poly(methyl methacrylate) (PMAA-PMMA) copolymer synthesized by nitroxide-mediated polymerization. Various PMAA-PMMA species could be identified which mainly differ in terms of terminaisons. 1H and 13C NMR experiments revealed the structure of the end-groups as well as the proportion of each co-monomer in the copolymers. These end-group masses were further confirmed from m/z values of doubly charged copolymer anions detected in the single stage mass spectrum. In contrast, copolymer composition derived from MS data was not consistent with NMR results, obviously due to strong mass bias well known to occur during electrospray ionization of these polymeric species. Tandem mass spectrometry could reveal the random nature of the copolymer based on typical dissociation reactions, i.e., water elimination occurred from any two contiguous MAA units while MAA-MMA pairs gave rise to the loss of a methanol molecule. Polymer backbone cleavages were also observed to occur and gave low abundance fragment ions which allowed the structure of the initiating end-group to be confirmed.
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Affiliation(s)
- Rémi Giordanengo
- Universités Aix-Marseille I, II et III-CNRS, UMR 6264: Laboratoire Chimie Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France
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Schmitz C, Mourran A, Keul H, Möller M. Synthesis and Association Behaviour of Linear Block Copolymers with Different Microstructures but the Same Composition. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200800205] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Xie M, Han H, Wang W, He X, Zhang Y. Synthesis and Self-Assembly of Functionalized Cyclooctene Block Copolymers via ROMP. MACROMOL CHEM PHYS 2008. [DOI: 10.1002/macp.200700452] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dai S, Ravi P, Tam KC. pH-Responsive polymers: synthesis, properties and applications. SOFT MATTER 2008; 4:435-449. [PMID: 32907201 DOI: 10.1039/b714741d] [Citation(s) in RCA: 421] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
pH-Responsive polymers are systems whose solubility, volume, and chain conformation can be manipulated by changes in pH, co-solvent, and electrolytes. This review summarizes recent developments covering synthesis, physicochemical properties, and applications in various disciplines. A variety of synthetic methodologies comprising of emulsion polymerization and living radical polymerization techniques are described, and some of their salient features are highlighted. Several polymeric systems, such as homopolymers, block copolymers, microgels, hydrogels and polymer brushes at interfaces are reviewed, where important characteristics that govern their behavior in solutions are described. Potential applications of these systems in controlled drug delivery, personal and home care, industrial coatings, biological and membrane science, viscosity modifiers, colloid stabilization, and water remediation, are discussed.
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Affiliation(s)
- Sheng Dai
- National Institute for Nanotechnology, National Research Council Canada, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada
| | - Palaniswamy Ravi
- Innovation Centre, 3M Asia Pacific Pte. Ltd, 100 Woodlands Avenue 7, 738205, Singapore
| | - Kam Chiu Tam
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
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Černoch P, Štěpánek P, Pleštil J, Šlouf M, Sidorenko A, Stamm M. Surface patterns of block copolymers in thin layers after vapor treatment. Eur Polym J 2007. [DOI: 10.1016/j.eurpolymj.2007.01.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Role of alkyl chain length and mole concentration of hydrophobic moiety in association behavior of amphiphilic polyelectrolytes in aqueous media. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.07.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Cosgrove T, Rodin V, Murray M, Buscall R. Self-diffusion in Solutions of Carboxylated Acrylic Polymers as Studied by Pulsed Field Gradient NMR. 1. Solvent Diffusion Studies. JOURNAL OF POLYMER RESEARCH 2007. [DOI: 10.1007/s10965-006-9087-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhang Y, Guo S, Lu C, Liu L, Li Z, Gu J. Poly(ε-caprolactone)-b-poly(ethylene glycol)-b-poly(ε-caprolactone) triblock copolymers: Synthesis and self-assembly in aqueous solutions. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pola.21739] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Tan CH, Ravi P, Dai S, Tam KC. Polymer-induced fractal patterns of [60]fullerene containing poly(methacrylic acid) in salt solutions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:9901-9904. [PMID: 15518470 DOI: 10.1021/la0480843] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Well-defined water-soluble pH-responsive [60]fullerene (C60) containing poly(methacrylic acid) (PMAA-b-C60) was synthesized using the atom transfer radical polymerization technique. By varying pH and salt concentration, different types of fractal patterns at nano- to microscopic dimensions were observed for negatively charged PMAA-b-C60, while such structure was not observed for positively charged poly(2-dimethylaminoethyl methacrylate)-b-C60. We demonstrated that negatively charged fullerene containing polymeric systems can serve as excellent nanotemplates for the controlled growth of inorganic crystals at the nano- to micrometer length scale, and the possible mechanism was proposed.
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Affiliation(s)
- Chung How Tan
- School of Mechanical and Production Engineering and Singapore-MIT Alliance, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Republic of Singapore
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