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Smirnov MA, Vorobiov VK, Fedotova VS, Sokolova MP, Bobrova NV, Smirnov NN, Borisov OV. A Polyelectrolyte Colloidal Brush Based on Cellulose: Perspectives for Future Applications. Polymers (Basel) 2023; 15:4526. [PMID: 38231953 PMCID: PMC10708233 DOI: 10.3390/polym15234526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/10/2023] [Accepted: 11/22/2023] [Indexed: 01/19/2024] Open
Abstract
This feature article is devoted to the evaluation of different techniques for producing colloidal polyelectrolyte brushes (CPEBs) based on cellulose nanofibers modified with grafted polyacrylates. The paper also reviews the potential applications of these CPEBs in designing electrode materials and as reinforcing additives. Additionally, we discuss our own perspectives on investigating composites with CPEBs. Herein, polyacrylic acid (PAA) was grafted onto the surface of cellulose nanofibers (CNFs) employing a "grafting from" approach. The effect of the PAA shell on the morphological structure of a composite with polypyrrole (PPy) was investigated. The performance of as-obtained CNF-PAA/PPy as organic electrode material for supercapacitors was examined. Furthermore, this research highlights the ability of CNF-PAA filler to act as an additional crosslinker forming a physical sub-network due to the hydrogen bond interaction inside chemically crosslinked polyacrylamide (PAAm) hydrogels. The enhancement of the mechanical properties of the material with a concomitant decrease in its swelling ratio compared to a pristine PAAm hydrogel was observed. The findings were compared with the recent theoretical foundation pertaining to other similar materials.
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Affiliation(s)
- Michael A. Smirnov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bolshoi Pr. 31, 199004 St. Petersburg, Russia; (V.K.V.); (V.S.F.); (M.P.S.); (N.V.B.); (N.N.S.)
| | - Vitaly K. Vorobiov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bolshoi Pr. 31, 199004 St. Petersburg, Russia; (V.K.V.); (V.S.F.); (M.P.S.); (N.V.B.); (N.N.S.)
| | - Veronika S. Fedotova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bolshoi Pr. 31, 199004 St. Petersburg, Russia; (V.K.V.); (V.S.F.); (M.P.S.); (N.V.B.); (N.N.S.)
| | - Maria P. Sokolova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bolshoi Pr. 31, 199004 St. Petersburg, Russia; (V.K.V.); (V.S.F.); (M.P.S.); (N.V.B.); (N.N.S.)
| | - Natalya V. Bobrova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bolshoi Pr. 31, 199004 St. Petersburg, Russia; (V.K.V.); (V.S.F.); (M.P.S.); (N.V.B.); (N.N.S.)
| | - Nikolay N. Smirnov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bolshoi Pr. 31, 199004 St. Petersburg, Russia; (V.K.V.); (V.S.F.); (M.P.S.); (N.V.B.); (N.N.S.)
| | - Oleg V. Borisov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, V.O. Bolshoi Pr. 31, 199004 St. Petersburg, Russia; (V.K.V.); (V.S.F.); (M.P.S.); (N.V.B.); (N.N.S.)
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux (IPREM), UMR 5254 CNRS/UPPA, 64053 Pau, France
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Prosvirnina AP, Bugrov AN, Bobrova NV, Sivtsov EV, Nikolaeva AL, Kamalov AM, Sokolova MP, Smirnov MA. Three-Dimensional Printed Shape Memory Gels Based on a Structured Disperse System with Hydrophobic Cellulose Nanofibers. Polymers (Basel) 2023; 15:3547. [PMID: 37688173 PMCID: PMC10490119 DOI: 10.3390/polym15173547] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/18/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Inks for 3D printing were prepared by dispersing bacterial cellulose nanofibers (CNF) functionalized with methacrylate groups in a polymerizable deep eutectic solvent (DES) based on choline chloride and acrylic acid with water as a cosolvent. After 3D printing and UV-curing, the double-network composite gel consisting of chemically and physically crosslinked structures composed from sub-networks of modified CNF and polymerized DES, respectively, was formed. The rheological properties of inks, as well as mechanical and shape memory properties of the 3D-printed gels, were investigated in dynamic and static modes. It was shown that the optimal amount of water allows improvement of the mechanical properties of the composite gel due to the formation of closer contacts between the modified CNF. The addition of 12 wt% water results in an increase in strength and ultimate elongation to 11.9 MPa and 300%, respectively, in comparison with 5.5 MPa and 100% for an anhydrous system. At the same time, the best shape memory properties were found for an anhydrous system: shape fixation and recovery coefficients were 80.0 and 95.8%, respectively.
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Affiliation(s)
- Angelina P. Prosvirnina
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy Pr. 31, Saint Petersburg 199004, Russia
| | - Alexander N. Bugrov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy Pr. 31, Saint Petersburg 199004, Russia
- Department of Physical Chemistry, Saint Petersburg Electrotechnical University (ETU “LETI”), ul. Professora Popova 5, Saint Petersburg 197022, Russia
| | - Natalya V. Bobrova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy Pr. 31, Saint Petersburg 199004, Russia
| | - Eugene V. Sivtsov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy Pr. 31, Saint Petersburg 199004, Russia
- Saint Petersburg State Institute of Technology, Moskovsky Pr. 24-26/49, Saint Petersburg 190013, Russia
| | - Alexandra L. Nikolaeva
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy Pr. 31, Saint Petersburg 199004, Russia
| | - Almaz M. Kamalov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy Pr. 31, Saint Petersburg 199004, Russia
| | - Maria P. Sokolova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy Pr. 31, Saint Petersburg 199004, Russia
| | - Michael A. Smirnov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy Pr. 31, Saint Petersburg 199004, Russia
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Sokolova MP, Smirnov MA, Samarov AA, Bobrova NV, Vorobiov VK, Popova EN, Filippova E, Geydt P, Lahderanta E, Toikka AM. Plasticizing of chitosan films with deep eutectic mixture of malonic acid and choline chloride. Carbohydr Polym 2018; 197:548-557. [PMID: 30007646 DOI: 10.1016/j.carbpol.2018.06.037] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/06/2018] [Accepted: 06/06/2018] [Indexed: 01/27/2023]
Abstract
Chitosan (CS) films containing deep eutectic solvent (DES) based on malonic acid (MA) and choline chloride (ChCl) were successfully prepared by solution casting method by using DES content ranging from 0 to 82 wt%. A strong interaction of CS with the components of DES was demonstrated by analyses of water sorption isotherms, atomic force microscopy and FTIR results. The plasticizing effect of the MA and ChCl mixture on the CS matrix was shown by static bulk mechanical measurements, thermal analysis and quantitative nanomechanical mapping (QNM). Elongation at break increased from 3 to 62% at increase of DES content from 0 to 67 wt%, while further increase of DES content led to the decreasing of maximal elongation. Introduction of DES into CS films led to the appearance of glass transition temperature in the region +2 - -2.3 °C. QNM results indicated homogeneity of the films containing up to 75 wt% of DES.
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Affiliation(s)
- Maria P Sokolova
- Saint Petersburg State University, Universitetsky pr. 26, Peterhof, Saint Petersburg, 198504, Russia; Lappeenranta University of Technology, Department of Physics, Skinnarilankatu 34, Lappeenranta, 53850, Finland.
| | - Michael A Smirnov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, Saint Petersburg, 199004, Russia; ITMO University, Saint Petersburg, 197101, Russia.
| | - Artemiy A Samarov
- Saint Petersburg State University, Universitetsky pr. 26, Peterhof, Saint Petersburg, 198504, Russia.
| | - Natalya V Bobrova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, Saint Petersburg, 199004, Russia.
| | | | - Elena N Popova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, Saint Petersburg, 199004, Russia.
| | - Elizaveta Filippova
- Lappeenranta University of Technology, Department of Physics, Skinnarilankatu 34, Lappeenranta, 53850, Finland.
| | - Pavel Geydt
- Lappeenranta University of Technology, Department of Physics, Skinnarilankatu 34, Lappeenranta, 53850, Finland.
| | - Erkki Lahderanta
- Lappeenranta University of Technology, Department of Physics, Skinnarilankatu 34, Lappeenranta, 53850, Finland.
| | - Alexander M Toikka
- Saint Petersburg State University, Universitetsky pr. 26, Peterhof, Saint Petersburg, 198504, Russia.
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Zemskov AM, Perederiĭ VG, Zaikin VV, Pritulina IG, Salomakhin GG, Bobrova NV, Vysotskaia AT, Poliakova SD, Shvets NI. [The relationship of immunological reactivity to blood groups]. Vrach Delo 1990:55-7. [PMID: 2275169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The relationship of blood groups and level of immunological reactivity was studied in 500 patients with different diseases and 246 healthy subjects. Distribution of genetic markers of blood groups in the healthy and patients showed certain characteristic features. It was found that the A (11) blood group in the healthy may be considered a marker of high levels of immunological reactivity resulting in a milder course of diseases in persons of this blood group. It was shown that different pathological states are characterized by variations of immunological reactivity depending on the blood group--on the content of populations and subpopulations of lymphocytes, immunoglobulin of different classes, normal antibodies, grade of immunodeficiency.
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Griaznov VN, Bobrova NV, Cherednikov EF. [Experimental-clinical basis for a method of draining suppurative wounds with Sephadex]. Vestn Khir Im I I Grek 1984; 132:124-5. [PMID: 6202043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Bobrova NV, Griaznov VN, Liubykh EN. [Choice of a method of surgery to treat umbilical hernias]. Vestn Khir Im I I Grek 1983; 131:118-20. [PMID: 6359642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Bobrova NV, Tkachev EA. [Combined complications in peptic ulcer of the stomach and duodenum]. Vestn Khir Im I I Grek 1980; 125:38-42. [PMID: 7222391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Case histories of patients with associated complications of peptic ulcer treated in the clinic of surgery of the Voronezh Medical Institute for the last 25 years are analyzed. Specific features of the clinical course and methods of treatment in different combinations of complications are considered with special reference to immediate and late results. Practical recommendations are given.
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Serzhanin AI, Aleksandriĭskiĭ MV, Bobrova NV, Serzhanina OA. [Current problems of acute intestinal obstruction]. Vestn Khir Im I I Grek 1974; 112:41-6. [PMID: 4218401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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