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Márton P, Rácz A, Szolnoki B, Madarász J, Nagy N, Fodor B, Basa P, Rohonczy J, Hórvölgyi Z. Chitosan nanocoatings N-acylated with decanoic anhydride: Hydrophobic, hygroscopic and structural properties. Carbohydr Polym 2024; 343:122480. [PMID: 39174139 DOI: 10.1016/j.carbpol.2024.122480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 06/27/2024] [Accepted: 07/09/2024] [Indexed: 08/24/2024]
Abstract
Thin (ca. 340 nm) chitosan coatings were deposited onto glass substrates via dip-coating, then modified with the methanol solution of decanoic anhydride (0.17-56 mM). NMR, FTIR and XPS measurements confirmed that the acylation degree increased from 18 % to 45 %, and at the highest degree, the whole layer was acylated homogeneously by the reagent molecules. The coating thickness increased (up to 60 %), and the refractive index decreased (from 1.541 to 1.532) due to the acylation, that was determined by UV-visible spectroscopy. The AFM did not reveal morphological changes, but wetting tests showed that the acylation rendered the coating hydrophobic (water contact angle increased from ca. 75° to 100°). The contact angle, however, decreased to 85° due to the development of a second molecular layer of the decanoic acid by-product at the highest (over 25 mM) reagent concentrations. XRD studies showed a self-assembling structuring of the alkyl-chains in the bulk phase, which occurred in the case of the highest degree of acylation. This also manifested itself in a significant decrease of the layer hygroscopicity: the swelling degree decreased from 40 % to 8 % in a saturated water atmosphere monitored by spectroscopic ellipsometry.
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Affiliation(s)
- Péter Márton
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Physical Chemistry and Materials Science, Centre for Colloid Chemistry, H-1111 Budapest, Műegyetem rkp. 3, Hungary.
| | - Adél Rácz
- Institute for Technical Physics and Materials Science, Centre for Energy Research, H-1121 Budapest, Konkoly Thege Miklós út 29-33, Hungary.
| | - Beáta Szolnoki
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Organic Chemistry and Technology, H-1111 Budapest, Műegyetem rkp. 3, Hungary.
| | - János Madarász
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Inorganic and Analytical Chemistry, H-1111 Budapest, Hungary.
| | - Norbert Nagy
- Institute for Technical Physics and Materials Science, Centre for Energy Research, H-1121 Budapest, Konkoly Thege Miklós út 29-33, Hungary.
| | - Bálint Fodor
- Semilab Semiconductor Physics Laboratory Co. Ltd., H-1117, Budapest, Prielle Kornélia utca 2, Hungary.
| | - Péter Basa
- Semilab Semiconductor Physics Laboratory Co. Ltd., H-1117, Budapest, Prielle Kornélia utca 2, Hungary.
| | - János Rohonczy
- Eötvös Loránd University, Faculty of Science, Institute of Chemistry, Department of Inorganic Chemistry, H-1117 Budapest, Hungary.
| | - Zoltán Hórvölgyi
- Budapest University of Technology and Economics, Faculty of Chemical Technology and Biotechnology, Department of Physical Chemistry and Materials Science, Centre for Colloid Chemistry, H-1111 Budapest, Műegyetem rkp. 3, Hungary.
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Malinkina ON, Shmakov SL, Shipovskaya AB. Structure, the energy, sorption and biological properties of chiral salts of chitosan with l- and d-ascorbic acid. Int J Biol Macromol 2024; 257:128731. [PMID: 38101672 DOI: 10.1016/j.ijbiomac.2023.128731] [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: 09/09/2023] [Revised: 11/18/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023]
Abstract
The influence of l- and d-ascorbic acid diastereomers on the structure, supramolecular ordering, energy, sorption and biological properties of heterochiral (D-L) and homochiral (D-D) salt complexes of chitosan (d-glucan)-acid was studied. The thermal effect of dissolving chitosan in l-ascorbic acid and the protonation degree of (D-L)-salts were lower than those in the medium of the d-isomer. Homochiral (D-D) salts, in contrast to heterochiral (D-L) ones, are distinguished by a more developed system of intermolecular and intramolecular contacts, a more ordered and equilibrium supramolecular organization of macrochains, a higher crystallinity degree, and a smaller amount of crystallization water. The sorption isotherms of chiral salts were approximated by the thermal equation of sorption and the superposition of the Langmuir and Flory-Huggins isotherms. Significant differences were found in the limiting value and energy of sorption, the constant of adsorption equilibrium, the limiting sorption capacity of the localized mode of water, and the Gibbs mixing energy. Biotesting on non-vascular (Scenedesmus quadricauda) and vascular eukaryotes (Linum usitatissimum) revealed the growth-stimulating effect of the D-D salts. The obtained results confirm our hypothesis of the homochiral salt complexes d-glucan-d-ascorbic acid best corresponding to the principles of the functional organization of biological objects.
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Affiliation(s)
- Olga N Malinkina
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, Saratov 410012, Russian Federation.
| | - Sergei L Shmakov
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, Saratov 410012, Russian Federation
| | - Anna B Shipovskaya
- Institute of Chemistry, Saratov State University, Astrakhanskaya 83, Saratov 410012, Russian Federation
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Nishida R, Hirota N, Nagai K. Anti-cluster behavior and its mechanism during water vapor sorption in chitin and chitosan membranes. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2023. [DOI: 10.1016/j.carpta.2023.100312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023] Open
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Chalykh AE, Bardyshev II, Petrova TF. Free Volume and Water Sorption by Cellulose Esters. Polymers (Basel) 2021; 13:polym13162644. [PMID: 34451184 PMCID: PMC8398463 DOI: 10.3390/polym13162644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 07/29/2021] [Indexed: 12/03/2022] Open
Abstract
The results ofthe sorption properties of cellulose acetate (CA) with different degrees of substitution (SD) are summarised. It has been shown that the sorption capacity of CA in water vapour decreases naturally with increasing content of acetate groups in monomeric units of cellulose ethers. The experimental isotherms are analysed according to the double sorption model. Hydrate numbers of hydroxyl and acetate groups were determined. The paired parameters of the Flory–Huggins interaction were calculated. It is shown that the decrease of the Langmuir component is due to the replacement of hydroxyl groups by ester groups, whose local sorption capacity by water vapour is lower than the sorption capacity of OH groups. In the area of high humidity, there is an increase in vacancy sizes due to plasticisation of the sorbents.
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Babicheva TS, Konduktorova AA, Shmakov SL, Shipovskaya AB. Formation of Liesegang Structures under the Conditions of the Spatiotemporal Reaction of Polymer-Analogous Transformation (Salt → Base) of Chitosan. J Phys Chem B 2020; 124:9255-9266. [PMID: 32966088 DOI: 10.1021/acs.jpcb.0c07173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This paper presents the results of our study of the diffusion front progression of OH- ions in the bulk of a flat layer of the salt chitosan form during the course of the chemical reaction of the polymer-analogous salt → base transformation, accompanied by the formation of a water-insoluble polymeric phase as a gel film with its structure of concentric rings or tangential bands. Using scanning electron microscopy and polarization microscopy, structural and morphological features of these periodic formations were visualized. Physicochemical parameters and spatiotemporal mass transfer characteristics were obtained. The process under study is shown to obey the classical laws of ion-exchange reactions, and the formation kinetics and the ratio of the positions of periodic structures are described by the laws characteristic of the Liesegang phenomenon. The average diffusion coefficients of hydroxide ions in the periodic formations calculated, considering the protonation degree of amino groups, were found to be no more than a decimal order of magnitude lower than those in an aqueous solution. This confirms the fact of swelling of the formed chitosan base and the existence of a gel film, in whose liquid phase diffusion occurs.
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Affiliation(s)
- Tatiana S Babicheva
- Institute of Chemistry, Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russian Federation
| | - Anastasiya A Konduktorova
- Institute of Chemistry, Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russian Federation
| | - Sergei L Shmakov
- Institute of Chemistry, Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russian Federation
| | - Anna B Shipovskaya
- Institute of Chemistry, Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russian Federation
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Lorenz SC, Humbert P, Patel AV. Chitin increases drying survival of encapsulated Metarhizium pemphigi blastospores for Ixodes ricinus control. Ticks Tick Borne Dis 2020; 11:101537. [PMID: 32993946 DOI: 10.1016/j.ttbdis.2020.101537] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 07/27/2020] [Accepted: 07/30/2020] [Indexed: 11/27/2022]
Abstract
Ticks, like Ixodes ricinus, have negative impacts on human and animal health in Germany and worldwide, with almost no specific scientifically proven biological control agent commercially available. Biological control agents containing entomopathogenic fungi present many advantages over chemical acaricides but usually high doses of aerial conidia (1013-1014 conidia/ha) are required to control arthropod pests in the field. A suitable formulation containing nutrients not only makes sensitive blastospores applicable but also functions as a microfermenter to multiply the biomass and thus significantly reduce the required application dosage. For this approach, Metarhizium pemphigi X1c blastospores were encapsulated in calcium alginate beads with granular corn starch or chitin powder as nutrients to ensure formation of aerial conidia on the surface and were then dried. The highest concentration was obtained with moist beads containing chitin (4.68 ± 0.71∙107 conidia∙bead-1). The highest drying survival was also obtained with chitin as the additive (14.7 ± 2.18%). Newly formed aerial conidia of all formulations showed high virulence and caused 100% mortality of I. ricinus nymphs. Altogether, this study paves the way for a lower dose and cost-effective application of blastospores for the control of above ground arthropod pests.
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Affiliation(s)
- Sissy-Christin Lorenz
- Bielefeld University of Applied Sciences, Faculty of Engineering and Mathematics, WG Fermentation and Formulation of Biologicals and Chemicals, Interaktion 1, 33619 Bielefeld, Germany.
| | - Pascal Humbert
- Bielefeld University of Applied Sciences, Faculty of Engineering and Mathematics, WG Fermentation and Formulation of Biologicals and Chemicals, Interaktion 1, 33619 Bielefeld, Germany.
| | - Anant V Patel
- Bielefeld University of Applied Sciences, Faculty of Engineering and Mathematics, WG Fermentation and Formulation of Biologicals and Chemicals, Interaktion 1, 33619 Bielefeld, Germany.
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Dresvyanina EN, Grebennikov SF, Dobrovol’skaya IP, Maslennikova TP, Ivan’kova EM, Yudin VE. Effect of Chitin Nanofibrils on the Sorption Behavior of Chitosan-Based Composite Films. POLYMER SCIENCE SERIES A 2020. [DOI: 10.1134/s0965545x20030050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kildeeva N, Chalykh A, Belokon M, Petrova T, Matveev V, Svidchenko E, Surin N, Sazhnev N. Influence of Genipin Crosslinking on the Properties of Chitosan-Based Films. Polymers (Basel) 2020; 12:E1086. [PMID: 32397589 PMCID: PMC7285115 DOI: 10.3390/polym12051086] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/27/2020] [Accepted: 05/06/2020] [Indexed: 01/09/2023] Open
Abstract
Chitosan is a promising environment friendly active polymer packaging material due to its biodegradability, exceptional film forming capacity, great mechanical strength, appropriate barrier property along with intrinsic antioxidant and antimicrobial features. Bifunctional reagent was used for producing water insoluble chitosan films. Biopolymeric films crosslinked by Genipin (Gp), which is a reagent of natural origin, should have high potential in food packaging. The influence of the ratio of functional groups in the chitosan-Gp system on film absorption in the visible and ultraviolet regions of the spectrum, sorption, physical, and mechanical properties of the films has been studied. The degree of chitosan crosslinking in the films obtained from solutions containing Gp was estimated using the experimental data on film swelling and water vapor sorption isotherms. It is demonstrated that crosslinking with genipin improves swelling, water resistance, and mechanical properties of the films.
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Affiliation(s)
- Nataliya Kildeeva
- Department of Chemistry and Technology of Polymer Materials and Nanocomposites, The Kosygin State University of Russia, 119071 Moscow, Russia; (M.B.); (N.S.)
| | - Anatoliy Chalykh
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia; (A.C.); (T.P.); (V.M.)
| | - Mariya Belokon
- Department of Chemistry and Technology of Polymer Materials and Nanocomposites, The Kosygin State University of Russia, 119071 Moscow, Russia; (M.B.); (N.S.)
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119071 Moscow, Russia
| | - Tatyana Petrova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia; (A.C.); (T.P.); (V.M.)
| | - Vladimir Matveev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russia; (A.C.); (T.P.); (V.M.)
| | - Evgeniya Svidchenko
- Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 119071 Moscow, Russia; (E.S.); (N.S.)
| | - Nikolay Surin
- Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 119071 Moscow, Russia; (E.S.); (N.S.)
| | - Nikita Sazhnev
- Department of Chemistry and Technology of Polymer Materials and Nanocomposites, The Kosygin State University of Russia, 119071 Moscow, Russia; (M.B.); (N.S.)
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Chalykh AE, Petrova TF, Matveev VV, Gerasimov VK, Khasbiullin RR, Shcherbina AA, Abaturova NA. Phase equilibria and structures of phases in the chitosan—polyvinyl alcohol systems. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2817-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Diblan S, Gökkaya Erdem B, Kaya S. Sorption, diffusivity, permeability and mechanical properties of chitosan, potassium sorbate, or nisin incorporated active polymer films. Journal of Food Science and Technology 2020; 57:3708-3719. [PMID: 32904019 DOI: 10.1007/s13197-020-04403-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/14/2020] [Accepted: 04/02/2020] [Indexed: 10/24/2022]
Abstract
The active multilayer packaging films were formed from low-density polyethylene (LDPE) and polyamide containing a 2% antimicrobial agent in one of the LDPE sides of the film (LDPE/polyamide/LDPE-2% antimicrobial agent). The antimicrobial agents used were potassium sorbate (PS-film), nisin (N-film), or chitosan (CTS-film). The effects of antimicrobial incorporation on water vapor permeability (P), diffusivity (D eff ), and solubility (S o and S H ) of the active and control films (LDPE/polyamide/LDPE) were investigated. A dynamic vapor sorption analyzer (DVS) was used to estimate the sorption isotherms of the films at 25 °C. Peleg was found to be the best equation to describe sorption behaviors. The addition of PS and nisin into the film matrix resulted in a lower P than that of the control film. The D eff values of the active films were lower than those of control films, except for the CTS-film. The high water-holding capacity of PS and nisin might limit the D eff of the respective films. It was found that Henry's law was applicable to relate P, D eff , and S o and S H values of the multilayer film [correlation coefficient (r) = 0.909-0.971]. The mechanical and thermal properties of the active films were not significantly affected by the incorporation of PS and nisin (p > 0.05). However, the impact of stress and elongation (transverse direction) on the CTS-film was lower than on other films, which indicated that chitosan improved the mechanical properties of the film.
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Affiliation(s)
- Sevgin Diblan
- Department of Food Engineering, Faculty of Engineering, Adana Alparslan Türkeş Science and Technology University, 01250 Adana, Turkey
| | - Burcu Gökkaya Erdem
- Department of Food Engineering, Engineering Faculty, Gaziantep University, 27310 Gaziantep, Turkey
| | - Sevim Kaya
- Department of Food Engineering, Engineering Faculty, Gaziantep University, 27310 Gaziantep, Turkey
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Smotrina Т, Dresvyanina Е, Grebennikov S, Kazakov М, Maslennikova Т, Dobrovolskaya I, Yudin V. Interaction between water and the composite materials based on chitosan and chitin nanofibrils. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122166] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Adamova LV, Safronov AP, Terziyan TV, Shabadrov PA, Klyukina AV. Thermodynamics of Swelling of Polyacrylamide and Poly(methacrylic acid) Lyophilized Xerogels in Water. POLYMER SCIENCE SERIES A 2018. [DOI: 10.1134/s0965545x18020013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Shipovskaya AB, Fomina VI, Kazmicheva OF, Rudenko DA, Malinkina ON. Optical activity of films based on chitosan of various molecular masses and modifications. POLYMER SCIENCE SERIES A 2017. [DOI: 10.1134/s0965545x17030154] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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