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1

Extraction of rubidium ion from brine solutions by dicyclohexano-18-crown-6 / ionic liquid system

Huang Dongfang, Ma Guixiang, Lv Peng, Zhou Quanbao

Polish Journal of Chemical Technology

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2023

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Vol. 25, nr 1

61--68

EN

Separation among rubidium and potassium ions from salt lake brines remains challenging. In this work, a typical room temperature ionic liquid 1-ethyl-3-metyhlimidazaolium bis(trifluoromethylsulfonyl)imide ([C2mim+][NTf2-]) was used as diluent and synergistic extractant, dicyclohexano-18-crown-6 (DCH18C6) was used as extractant to extract rubidium ions from brine solutions which contain high concentrations of potassium ions was investigated. Under the optimal conditions, the single extraction efficiency of rubidium ions was up 93.63%. The thermodynamic parameters of the rubidium ion extraction were obtained. Based on the slope analysis method, the extracted species in the organic phase were ascertained as 1:1 complex. UV-visible has been performed to investigate the ion concentration of ionic liquid before and after the interaction of metal ions and ligands. Rubidium ions in [Rb · DCH18C6]+ complex were stripped by 2.5 mol · L-1 NH4NO3. The extraction system offers high efficiency, simplicity and environmentally friendly application prospect to separate rubidium from brine solutions.

2

Solvent extraction of Terbium(III) from chloride solution using organophosphorus extractant, its mixture and ionic liquid in the presence of organic acids

Tran Thanh Tuan, Song Si Jeong, Oh Chang Geun, Lee Man Seung

Physicochemical Problems of Mineral Processing

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2023

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Vol. 59, iss. 2

art. no. 162714

EN

Addition of organic acids to dilute hydrochloric acid solution can improve the extraction of rare earth elements by single cationic extractants. However, the correlation between the chemical structure of organic acids and the extraction of REEs as well as the variation in equilibrium pH has not been elucidated. In this study, we investigated the extraction of Tb(III) from dilute HCl solutions containing an organic acid like formic, lactic, fumaric, or maleic acid. As extractants, single Cyanex 272, a mixture of Cyanex 272 and Alamine 336 (Ala336-Cy272), and an ionic liquid (ALi-Cy272) synthesized by Cyanex 272 and Aliquat 336 were used. The speciation of Tb(III) in dilute HCl solutions containing organic acids was analyzed. In extraction of Tb(III), organic acids showed two roles as complexing and buffering agent, which depended on the chemical structure of the acids. There was some difference in the extraction of Tb(III) between single Cyanex 272 and ionic liquid, ALi-Cy272. During extraction with ALi-Cy272, formic and lactic acid negatively affected the extraction of Tb(III). The fact that the chemical structure of organic acids affected the extraction of Tb(III) from dilute HCl solution by the studied extractants can provide important information on the selection of suitable extraction systems.

3

New ionic liquids based on the biguanide cation with antimicrobial properties for applications in the textile and polymer materials industries

Słubik Anna, Masłowska-Lipowicz Iwona, Wyrębska Łucja, Królikowski Bogusław, Malinowski Rafał, Bajer Krzysztof

Fibres & Textiles in Eastern Europe

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2023

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Vol. 31, no. 1

9--14

EN

The presented article describes the method of synthesizing new ionic liquid based on a biguanide cation and a tiocyanate or benzoate anion with antimicrobial properties. The structure of obtained new ionic liquid was confirmed by infrared spectroscopy. Additionally, the article describes a simple method of producing an antibacterial textile materials and PE-based film with the addition of an ionic liquid.

4

Intermediates derived from p-terphenyl in the methyltributylammonium bis[(trifluoromethyl)sulfonyl]imide ionic liquid saturated with carbon dioxide : pulse radiolysis study

Kocia Rafał

Nukleonika

|

2022

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Vol. 67, No. 4

73--80

EN

Radiation-induced processes in ionic liquid (IL) methyltributylammonium bis[(trifl uoromethyl)sulfonyl] imide ([MeBu3N][NTf2]) solutions containing p-terphenyl (TP) and saturated with carbon dioxide (CO2) were studied using nanosecond pulse radiolysis technique with UV-vis detection. The transient absorption spectra generated in these solutions were assigned to TP radical anions (TP•–) and triplet excited states (3TP*). Saturation of [MeBu3N][NTf2] solutions with carbon dioxide efficiently takes out presolvated electrons (e–presolv) and solvated electrons (e–solv). On the other hand CO2 is not a scavenger of excited states of TP (1TP*, 3TP*), which in the reaction with triethylamine (TEA) leads to the formation of TP•-.

5

Hydrometallurgical recovery of platinum group metals from spent automotive converters

Rzelewska-Piekut Martyna, Paukszta Dominik, Regel-Rosocka Magdalena

Physicochemical Problems of Mineral Processing

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2021

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Vol. 57, iss. 2

83--94

EN

This work presents studies on the recovery of platinum group metals (PGM), especially platinum and rhodium, from spent automotive converters using hydrometallurgical techniques such as leaching and liquid-liquid extraction. The XRD analysis confirmed the presence of indialite – the high temperature hexagonal form of cordierite (the main catalyst building material) in the solid samples. The influence of time and temperature on the leaching of PGM from spent automotive converters was investigated. The largest amounts of Pt(IV) and Rh(III) were leached with freshly prepared aqua regia and a mixture of HCl, HSO₄, and H₂O₂. Further, liquid-liquid extraction with quaternary phosphonium ionic liquid (Cyphos IL 101) was applied to recover PGM from the leach solutions (after leaching with a mixture of HCl, H₂SO₄, and H₂O₂) and to separate Pt(IV) from Rh(III).

6

The synthesis of gemini ionic salt in the form of a (tetra)fluoborate of 1,4-bis-((1-decyloimidazol-3-yl)methyl)benzene

Turlej Anna, Skolniak Marta, Nowosielski Jacek

Journal of KONBiN

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2021

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Vol. 51, iss. 4

67--89

EN

Ionic liquids as anticorrosion agents have a wide spectrum of unique properties, which make them less harmful than the majority of typical organic corrosion inhibitors in antifreeze. The synthesis of ionic liquids enables them to be provided with the desired physicochemical and thermodynamical properties by the appropriate selection of cations, anions, and alkyl substituents on the cations. The aim of this paper is the synthesis of the gemini ionic salt (ionic liquid) made up of two imidazole rings with a linear alkyl substituent with 10 carbon atoms, bonded by a 1,4-dimethylphenyl moiety. Such compounds are studied in view of steel protection against oxidizing and corrosive effects. The compound was obtained in a satisfactory yield.

PL

Ciecze jonowe jako środki przeciwkorozyjne posiadają szereg unikalnych właściwości, które czynią je potencjalnie mniej szkodliwymi niż większość typowych organicznych inhibitorów korozji w płynach niskokrzepnących. Synteza cieczy jonowych daje możliwość nadawania im pożądanych właściwości fizykochemicznych i termodynamicznych poprzez odpowiedni dobór kationów, anionów i alkilowych podstawników przy kationach. Celem niniejszej pracy była synteza geminalnej soli jonowej (cieczy jonowej), zbudowanej z dwóch pierścieni imidazoliowych z prostołańcuchowym podstawnikiem alkilowym o 10 atomach węgla, połączonych ugrupowaniem 1,4-dimetylofenylowym. Związki tego typu są badane pod kątem ochrony stali przed działaniem utleniającym i korozyjnym. Związek otrzymano z zadowalającą wydajnością.

7

Ionic liquids in the pretreatment of lignocellulosic biomass

Rodríguez Héctor

Acta Innovations

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2021

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no. 38

23--36

EN

The pretreatment is a key step in the processing of lignocellulosic biomass for its transformation into chemicals and materials of biorenewable origin. Ionic liquids, with their characteristic set of unique properties, have the potential to be the basis of novel pretreatment processes with higher effectiveness and improved sustainability as compared to the current state-of-the-art processes. In this opinion paper, the author provides a perspective on possible processing strategies for this pretreatment with ionic liquids, identifying different advantages as well as challenges to be overcome.

8

Ionic liquids as alternative solvents for energy conservation and environmental engineering

Padinhattath Sachind Prabha, Chenthamara Baiju, Gardas Ramesh L.

Acta Innovations

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2021

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no. 38

62--79

EN

Because of industrialization and modernization, phenomenal changes have taken place in almost all spheres of life. Consequently, the consumption of energy resources and the cases of environmental hazards have risen to an unprecedentedly high level. A development model with due consideration to nature and an efficient utilization of energy sources has become the need of the hour, in order to ensure a sustainable balance between the environmental and technological needs. Recent studies have identified the suitability of ionic liquids (ILs), often labeled as ‘green solvents’, in the efficient utilization of energy resources and activities such as bio-extraction, pollution control, CO2 capture, waste management etc. in an environmentally friendly manner. The advent of magnetic ionic liquids (MILs) and deep eutectic solvents (DESs) have opened possibilities for a circular economic approach in this filed. This review intends to analyze the environmental and energy wise consumption of a wide variety of ionic liquids and their potential towards future.

9

Facile preparation of Co@Co3O4@Nitrogen doped carbon composite from ionic liquid as anode material for high performance lithium-ion batteries

Xiao Mingjun, Meng Yanshuang, Duan Chaoyu, Zhu Fuliang, Zhang Yue

Materials Science Poland

|

2020

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Vol. 38, No. 4

601--612

EN

Co@Co3O4@Nitrogen doped carbon (Co@Co3O4@NDC) composite is synthesized by high temperature carbonization of ionic liquids followed by low temperature thermal oxidation. In the process of high temperature carbonization, cobalt ions are reduced to metallic cobalt, producing Co@Nitrogen doped carbon (Co@NDC). Co@Co3O4 @NDC composite is obtained after low temperature oxidation, in which a part of the metallic cobalt is oxidized to Co3O4. The structural characterizations indicate that the composite is composed of three crystalline phases (carbon, Co and Co3O4). The results of transmission electron microscopy study show that the carbon materials not only coat the Co@Co3O4 nanoparticles, but also form carbon network that connects the Co@Co3O4 nanoparticles. This conductive carbon network is beneficial to improve the electrochemical performance of the composite. The electrochemical test results show that the Co@Co3O4 @NDC composite exhibits excellent electrochemical performance, delivering the discharge capacities of 790 and 304 mAh∙g-1 after 1500 cycles at 5 C and 10 C. This excellent electrochemical performance is due to synergistic effects of Co3O4, cobalt nanoparticles embedded in carbon which has high conductivity, and nitrogen functional groups.

10

Chitin Fibre Formation by the Solution Blow Spinning Method, Using 1-butyl-3-methylimidazolium Acetate Ionic Liquid as a Solvent

Gorzędowski Jeremiasz, Smiglak Marcin, Struszczyk Marcin H., Puchalski Michał, Krucińska Izabella

Fibres & Textiles in Eastern Europe

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2020

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Vol. 28, no. 4 (142)

42--48

EN

Chitin is the second most abundant polysaccharide on the Earth after cellulose, therefore there is a tangible need for finding new environmentally-friendly solvents for the manufacture of useful forms of that polymer. Ionic liquids have been recently proposed as a possible type of solvent for chitin and cellulose. The possibility of the dissolution of chitin of various origin in six selected ionic liquids was investigated. Chitin samples were characterised by the main characteristic properties: degree of N-acetylation (by FTIR spectroscopy), degree of crystallinity (by WAXS), average molecular weight (by the viscometric method) and physical form. The studies performed allowed to find the optimum chitin-ionic liquid system based on 1-btyl-3-methylimidazolium acetate for the manufacture of chitin fibres by the solution blow spinning method. Final products were characterized by the same set of parameters as the initial materials.

PL

Chityna jest drugim po celulozie polisacharydem na Ziemi, dlatego istnieje namacalna potrzeba znalezienia nowych i przyjaznych dla środowiska rozpuszczalników do produkcji użytecznych form tego polimeru. Niedawno ciecze jonowe zostały zaproponowane jako możliwe do zastosowania „zielone” rozpuszczalniki chityny i celulozy. W artykule oceniono możliwość rozpuszczania różnego pochodzenia chityny w sześciu wybranych cieczach jonowych. Próbki chityny zostały scharakteryzowane poprzez następujące właściwości: stopień N-acetylacji (spektroskopia FT IR), stopień krystaliczności (WAXS), średnia masa cząsteczkowa (metoda wiskometryczna). Przeprowadzone badania pozwoliły na znalezienie optymalnego systemu cieczy jonowej do wytworzenia włókien chitynowych metodą rozdmuchu. Produkty końcowe zostały scharakteryzowane poprzez ten sam zestaw parametrów, co początkowe polimery.

11

The mechanism study on aryl-substituted aromatic acid ionic liquid as the collector for quartz flotation

Li Haonan, Mei Guangjun, Yu Mingming, Cheng Qian, Zhu Guobin

Physicochemical Problems of Mineral Processing

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2019

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Vol. 55, iss. 5

1239--1249

EN

An aryl-substituted aromatic acid ionic liquid (M-X) was synthesized through hexadecyl trimethyl ammonium bromide and sodium salicylate, and it was employed as a flotation collector for the separation of quartz from magnetite. Laboratory flotation studies of magnetite and quartz were conducted using the M-X and dodecylamine (DDA) as collector. The results showed that the M-X has a stronger collecting ability and selectivity for quartz without starch. The adsorption mechanism of M-X on quartz and magnetite surfaces was studied by Fourier transform infrared spectroscopy (FTIR), zeta potential and X-ray photoelectron spectroscopy (XPS) analysis. Results indicated that the adsorption of M-X on the quartz surface was more efficient than that on the magnetite surface. And the salicylate anion in M-X was found to have depression effect to magnetite.

12

Electrodeposition of Zn, Cu and Cu-Zn alloy coatings from the galvanic baths based on 2-hydroxyethyl-trimethylammonium acetate

Maciej Artur, Kądziela Monika, Michalska Joanna, Dercz Grzegorz

Ochrona przed Korozją

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2019

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nr 3

112--115

EN

Results of the investigations on electrodepositon of zinc, copper and copper-zinc alloy coatings from the galvanic baths based on 2-hydroxyethyl- trimethylammonium acetate have been presented in the paper. An influence of cathodic current density on structure of the deposits (SEM) was determined. Moreover, a chemical composition (EDS) as well as a phase composition (XRD) of the obtained alloy coatings were analysed. On the basis of the realized studies it was found that the current conditions influence on grain size of zinc coatings, however in the case of Cu and Cu-Zn coatings the effect is unessential. The electrodeposited brass alloys were solid solutions of zinc in copper.

PL

W pracy przedstawiono wyniki badań nad elektroosadzaniem powłok cynkowych, miedzianych i stopowych Cu-Zn z kąpieli galwanicznych opartych na octanie 2-hydroksyetylo-(trimetylo)amoniowym. W ramach pracy określono wpływ katodowej gęstości prądu na strukturę osadzonej powłoki (SEM). Ponadto wykonano analizę składu chemicznego (EDS) oraz składu fazowego (XRD) wytworzonych powłok stopowych. Na podstawie przeprowadzonych badań stwierdzono, że warunki prądowe wpływają na rozmiar ziaren powłok cynkowych, jednakże w przypadku powłok Cu i Cu-Zn wpływ ten jest nieznaczny. Powłoki mosiężne osadzone elektrolitycznie stanowiły roztwór stały cynku w miedzi.

13

Ciecze jonowe jako medium sorpcyjne w mikroekstrakcji do pojedynczej kropli. Cz. 1 - podstawy teoretyczne zagadnienia

Konieczna Karolina, Marcinkowski Łukasz, Kloskowski Adam, Namieśnik Jacek

Analityka : nauka i praktyka

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2019

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nr 1

30--34

PL

Technika mikroekstrakcji do pojedynczej kropli jest na etapie przygotowania próbki doskonałym rozwiązaniem technicznym, które spełnia wymagania stawiane przez ideę zielonej chemii analitycznej.

14

Application of mobile phases containing ionic liquid for the analysis of selected psychotropic drugs by HPLC–DAD and HPLC–MS

Petruczynik A., Wróblewski K., Waksmundzka-Hajnos M.

Acta Chromatographica

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2019

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Vol. 31, no. 4

255--261

EN

In reversed-phase liquid chromatography, in case of the absence of additives, cationic basic compounds give rise to asymmetrical and broad peaks as a result of interactions of analyte cations with residual free silanols on silica-based stationary phases. Ionic liquids, added to the mobile phase, have been suggested as alternatives to amines to block the activity of free silanols. The different parameters affecting the retention behavior, symmetry of peak, system efficiency, and separation selectivity of selected psychotropic drugs, especially the effect of concentration of ionic liquid, kind and concentration of organic modifiers of mobile phases, and kind of stationary phases were investigated. The most selective and efficient systems are used for separations of psychotropic drug standards' mixture and for determination of selected psychotropic drugs in human serum.

15

The Influence of Silicon-Doped Diamond-Like Carbon Coating on the Wear of Ionic Liquid Lubricated Friction Pairs

Milewski K., Madej M., Kowalczyk J., Ozimina D.

Tribologia

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2018

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nr 6

97--106

EN

This article reports the results of the study of an a-C:H:Si coating doped with silicon and produced by chemical deposition (PACVD). The effect of the coating on the tribological behaviour of IL-lubricated friction pairs was evaluated. The properties of the 100Cr6 steel specimens with and without the coating were compared. Scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis were used for imaging the morphology of the coating surfaces and cross-sections and for identifying the elements in the coating composition. The contact angle of the investigated surfaces was measured with an optical tensiometer. Friction tests were performed on a ball-on-disc tribometer under dry friction and when lubricated with trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl) amide ionic liquid. The geometrical structure of the surfaces before and after the tribological tests was measured using an optical profilometer. The ionic liquid used with the silicon-doped diamond-like coating under friction conditions reduced the coefficient of friction and wear. The results obtained from the tests and analysis allow for the conclusion that the use of DLC coatings a-C:H:Si lubricated with trihexyltetradecylphosphonium Bis(trifluoromethylsulfonyl) amide contributes towards the improvement of tribological properties of sliding surfaces under friction.

PL

Artykuł poświęcony jest badaniom powłoki diamentopodobnej domieszkowanej krzemem typu a-C:H:Si uzyskanej w procesie chemicznego osadzania z fazy gazowej wspomaganego plazmą PACVD. Ocenie poddano wpływ powłoki na właściwości tribologiczne węzłów tarcia smarowanych cieczą jonową (Ionic Liquid) IL. W analizie porównano próbki ze stali 100Cr6 bez powłoki oraz pokryte powłoką diamentopodobną. Przy użyciu skaningowego mikroskopu elektronowego SEM (Scanning Electron Microscopy) wyposażonego w mikroanalizator rentgenowski EDS (X-ray Energy Dispersive Spectroscopy), zobrazowano morfologię powierzchni powłok, ich przekroje poprzeczne oraz dokonano identyfikacji pierwiastków wchodzących w skład powłoki. Wykonano również pomiary kąta zwilżania badanych powierzchni na optycznym tensjometrze. Badania tarciowe przeprowadzono na tribotesterze pracującym w skojarzeniu trącym kula–tarcza w warunkach tarcia technicznie suchego oraz z zastosowaniem smarowania cieczą jonową triheksyltetradecylphosphonium bis(triffluoromethylsulfonyl) amide. Charakterystykę struktury geometrycznej próbek przed oraz po badaniach tribologicznych przeprowadzono na profilometrze optycznym. Wyniki badań wskazały, że użyta ciecz jonowa w skojarzeniu trącym z powłoką diamentopodobną domieszkowaną krzemem wpłynęła na zmniejszenie współczynnika tarcia oraz zużycia. Otrzymane wyniki wskazują, że zastosowanie powłok diamentopodobnych typu a-C:H:Si smarowanych triheksyltetradecylphosphonium bis(triffluoromethylsulfonyl) amidem sprzyja poprawie właściwości tribologicznych węzłów tarcia w ruchu ślizgowym.

16

Kompozyty elastomerowe o polepszonych właściwościach użytkowych

Sowińska A., Maciejewska M.

Technologia i Jakość Wyrobów

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2018

|

R. 63

35--44

PL

Celem badań było uzyskanie kompozytów z kauczuku butadienowo-styrenowego (SBR) o polepszonych właściwościach użytkowych, obniżonej temperaturze i skróconym czasie wulkanizacji. Jako aktywator wulkanizacji zastosowano nanometryczny tlenek cynku zmodyfikowany cieczą jonową w masie elastomeru lub w rozpuszczalniku. Aplikacja takiego układu aktywującego pozwoliła uzyskać wulkanizaty o zwiększonej wytrzymałości na rozciąganie, twardości i odporności na starzenie termo-oksydacyjne w stosunku do zawierających mikrometryczny ZnO. Czas wulkanizacji uległ skróceniu, a temperatura i entalpia procesu zmniejszyły się. Uzyskano wulkanizaty o 50% mniejszej zawartości ZnO, zgodnie z Dyrektywą Unii Europejskiej.

EN

The main aim of research was to obtain elastomer composites of styrene-butadiene rubber (SBR) with improved functional properties, reduced temperature and time of vulcanization. Nanosized zinc oxide modified with ionic liquid directly in the elastomer matrix or in the solution process was used as vulcanization activator. Application of this activating system resulted in vulcanizates with increased tensile strength, hardness and resistance to thermo-oxidative aging as compared with microsized ZnO activator. The vulcanization time of SBR, the temperature and enthalpy of this process were reduced. The vulcanizates with 50% lower content of ZnO were obtained, according to the EU Directive.

17

Perspective polyionens with special properties

Fedenko O., Sverdlikovska O., Burmistr M.

Przetwórstwo Tworzyw

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2018

|

T. 24, Nr 3 (183)

15--19

EN

New polyionens based on epoxy derivatives of 1,2-epoxy-4,7-dioxononen-8 and tetrahydro-1, 4-oxazine were synthesized. The basic regularities of polyionen synhthesis were established. Systematic study of the physico-chemical, optical, thermal and viscosimetric properties of new polyionens was carried out. It was found that the obtained polyionens are capable of operating in the range from -54 to 140°C. The ionic conductivity of synthesized polyionens are 10-2-10-4 Cm cm 2. Thus, the studied polyionens can be recommended for use as a component of liquid, polymeric lithium electrolytes, solar cells, condensers, as effective additives for cellulose triacetate compositions, as coagulants in the treatment of sewage.

18

Preparing and Using Cellulose Granules as Biodegradable and Long-Lasting Carriers for Artificial Fertilizers

Gabryś T., Fryczkowska B.

Journal of Ecological Engineering

|

2018

|

Vol. 19, nr 4

111--122

EN

The paper presents the results of research on the preparation and use of cellulose granules as carriers of nutrients in the cultivation of plants. The granules were prepared from a cellulose solution in 1-ethyl-3-methylimidazole acetate followed by coagulation in water and primary alcohols: methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol and 1-octanol. Modifications of granules were also carried out by hydrophobization at elevated temperature and by encapsulation in a polylactide solution. As a result of the research, cellulose granules were obtained, which were characterized by different porosity, depending on the type of coagulant used. The morphology of granules surface and cross-sections was examined by means of scanning electron microscopy (SEM). The cellulose granules exhibited good sorption/desorption properties which were investigated by conductometry and UV-Vis spectroscopy. The longest desorption time of NH4NO3 was characteristic of granules obtained as a result of thermal hydrophobization of the surface, which were used in the cultivation of the spider plant. As a result of the research, cellulose granules were obtained which may find potential application in crop production, as long-acting, non-dusting and fully biodegradable fertilizers.

19

Properties and Structure of Cellulosic Membranes Obtained from Solutions in Ionic Liquids Coagulated in Primary Alcohols

Fryczkowska B., Kowalska M., Biniaś D., Ślusarczyk C., Janicki J., Sarna E., Wyszomirski M.

Autex Research Journal

|

2018

|

Vol. 18, no. 3

232--242

EN

This paper presents the results of studies on the preparation of cellulosic membranes, from a solution in 1-ethyl-3- methylimidazolium acetate (EMIMAc), using the phase inversion method. Initially, the membranes were obtained by coagulation of the polymer film in water and primary alcohols (methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol), 1-hexanol, 1-octanol) resulting in membranes with significantly differing morphologies. Subsequently, composite membranes were produced, with the support layer being a membrane with the largest pores, and the skin layer a membrane with smaller pores. The resulting membranes were tested for physicochemical and transport properties. The morphology of the membrane surfaces and their cross-sections were investigated by using a scanning electron microscope (SEM). The structure of the membranes, on the other hand, was investigated by FTIR spectroscopy and WAXS structural analysis.

20

Applicability of carboxymethyldodecyldimethylammonium bis(trifluoromethylsulfonyl) imide in pine wood (Pinus sylvestris L.) modification

Babicka M., Woźniak M., Ratajczak I., Odalanowska M., Grząbka-Zasadzińska A., Skrzypczak A., Borysiak S.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

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2018

|

No. 104

454--458

EN

The paper presents results of reactivity of carboxymethyldodecyldimethylammonium bis(trifluoromethyl-sulfonyl) imide with Scots pine wood. The wood in the form of powder was added to ionic liquids (IL). The results of FTIR analyses indicated reactivity of IL with pine wood. Bands characteristic of vibrations of the carbon-nitrogen and carbon-sulfur bonds originating from molecules of ionic liquid were observed in the spectra of treated wood showing an interaction between wood and IL. Moreover, the nitrogen and sulfur contents in treated wood samples and after leaching indicated an effective reaction between wood and ionic liquid.