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Surface characterization of wood treated with acidic deep eutectic solvents

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Abstract

This study investigated the use of deep eutectic solvents (DESs) to improve the accelerated weathering performance of Scots pine (Pinus sylvestris L.) wood. In addition to being natural and easily obtained, the simple preparation of these solvents via heating and mixing has led to their use in a pretreatment process. The DES solutions were prepared by mixing, in different molar ratios, oxalic acid (OA) and acetic acid (AA) as hydrogen bond donors (HBDs) and choline chloride (ChCl) and betaine (BT) as hydrogen bond acceptors (HBAs). In this study, the novel DESs were prepared and characterized. Scots pine wood samples prepared in dimensions of 15 (radial) × 75 (tangential) × 150 (longitudinal) mm were treated with the DES solutions at 150 °C for 2 h. The weathering effects on the surface characteristics and morphology of the samples were examined by means of Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and measurement of color, gloss, and surface roughness. Weathering was carried out via cycles of 8-h UV-light irradiation and 15-min water spraying followed by 3.45-h conditioning in an accelerated weathering test cycle chamber. According to the FTIR results, the lignin ratio decreased significantly in the wood samples subjected to 2-h pretreatment at 150 °C. The results showed that the greatest color change occurred on the surfaces of the control samples, whereas the least color change was observed up to 168 h on the OA-BT samples. The glossiness values increased with the first 168 h of weathering. Thereafter, the gloss values of the samples treated with OA-BT and OA-ChCl remained stable. The surface roughness and degradation of surface components rose with the increase in the weathering exposure period. In accordance with the color and surface roughness measurements, the FTIR spectra proved that for all specimens, lignin continued to degrade on the exposed surfaces throughout 168 h of accelerating weathering.

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References

  • Abbott AP, Capper G, Davies DL, Rasheed RK, Tambyrajah V(2003) Novel solvent properties of choline chloride/urea mixtures. Chemical communications 1:70–71

  • Alvarez-Vasco C, Ma R, Quintero M, Guo M, Geleynse S, Ramasamy KK, Wolcott M, Zhang X (2016) Unique low-molecular-weight lignin with high purity extracted from wood by deep eutectic solvents (DES): a source of lignin for valorization. Green Chem 18(19):5133–5141

    CAS  Google Scholar 

  • Arpaci SS, Tomak ED, Ermeydan MA, Yildirim I (2021) Natural weathering of sixteen wood species: Changes on surface properties. Polym Degrad Stab 183:109415

    CAS  Google Scholar 

  • ASTM G154-06 (2006) Standard practice for operating fluorescent light apparatus for UV exposure of nonmetallic materials ASTM International, West Conshohocken, PA, USA

  • Behbood M, Saei AM (2015) Effects of geographical directions and climatological parameters on natural weathering of fir wood Constr. Build Mater 94:684–690

    Google Scholar 

  • Boerjan W, Ralph J, Baucher M (2003) Lignin biosynthesis. Annu Rev Plant Biol 54(1):519–546

    CAS  PubMed  Google Scholar 

  • Can A, Palanti S, Sivrikaya H, Hazer B, Stefanı F (2019) Physical, biological and chemical characterisation of wood treated with silver nanoparticles. Cellulose 26(8):5075–5084

    CAS  Google Scholar 

  • Cogulet A, Blanchet P, Landry V (2016) Wood degradation under UV irradiation: A lignin characterization. J Photochem Photobiol B 158:184–191

    CAS  PubMed  Google Scholar 

  • Colom X, Carrillo F (2002) Crystallinity changes in lyocell and viscose-type fibres by caustic treatment. Eur Polymer J 38(11):2225–2230

    CAS  Google Scholar 

  • Colom X, Carrillo F, Nogués F, Garriga P (2003) Structural analysis of photodegraded wood by means of FTIR spectroscopy. Polym Degrad Stab 80(3):543–549

    CAS  Google Scholar 

  • Cox P, Wilkinson SP, Anderson JM (2001) Effects of fungal inocula on the decomposition of lignin and structural polysaccharides in Pinus sylvestris litter. Biol Fertil Soils 33(3):246–251

    CAS  Google Scholar 

  • Craveiro R, Aroso I, Flammia V, Carvalho T, Viciosa MT, Dionísio M, Barreiros S, Reis RL, Duarte ARC, Paiva A (2016) Properties and thermal behavior of natural deep eutectic solvents. J Mol Liq 215:534–540

    CAS  Google Scholar 

  • Dai Y, Witkamp GJ, Verpoorte R, Choi YH (2015) Tailoring properties of natural deep eutectic solvents with water to facilitate their applications. Food Chem 187:14–19. https://doi.org/10.1016/j.foodchem.2015.03.123

    Article  CAS  PubMed  Google Scholar 

  • Dordevic DM, Stankovic MN, Dordevic MG, Krstić NS, Pavlović MA, Radivojević AR, Filipović IM (2012) FTIR spectroscopic characterization of bituminous limestone: Maganik mountain (Montenegro), vol 57. Studia Universitatis Babes-Bolyai, Chemia, 4

    Google Scholar 

  • El Achkar T, Fourmentin S, Greige-Gerges H (2019) Deep eutectic solvents: An overview on their interactions with water and biochemical compounds. J Mol Liq 288:111028. https://doi.org/10.1016/j.molliq.2019.111028

    Article  CAS  Google Scholar 

  • Evans PD, Chowdhury MJ (2010) Photoprotection of wood using polyester-type UV-absorbers derived from the reaction of 2-hydroxy-4 (2, 3-epoxypropoxy)-benzophenone with dicarboxylic acid anhydrides. J Wood Chem Technol 30(2):186–204

    CAS  Google Scholar 

  • Faruk O, Sain M (2015) Lignin in polymer composites. William Andrew. William Andrew Publishing, pp 1–11

  • Feist WC(1982) Weathering of wood in structural uses R.W. Meyer, R.M. Kellogg (Eds.), Structural Use of Wood in Adverse Environments, Van Ostrand Reinhold (1982), pp. 156–207

  • Feist WC (1990a) Outdoor wood weathering and protection. Archaeological wood, properties, chemistry, and preservation. Adv Chem Ser 225:263–298

    CAS  Google Scholar 

  • Feist WC (1990b) Weathering performance of painted wood pretreated with water-repellent preservatives. For Prod J 40(7/8):21–26

    CAS  Google Scholar 

  • Fengel D, Wegener G(2011) Wood: Chemistry, Ultrastructure, Reactions Walter de Gruyter, pp. 1-626, https://doi.org/10.1007/BF02608943

  • Fernandes C, Melro E, Magalhães S, Alves L, Craveiro R, Filipe A, Romano A, Medronho B (2021) New deep eutectic solvent assisted extraction of highly pure lignin from maritime pine sawdust (Pinus pinaster Ait.). Int J Biol Macromol 177:294–305

    CAS  PubMed  Google Scholar 

  • Forsthuber B, Müller U, Teischinger A, Grüll G (2013) Chemical and mechanical changes during photooxidation of an acrylic clear wood coat and its prevention using UV absorber and micronized TiO2. Polym Degrad Stab 98(7):1329–1338

    CAS  Google Scholar 

  • Francisco M, van den Bruinhorst A, Kroon MC (2012) New natural and renewable low transition temperature mixtures (LTTMs): screening as solvents for lignocellulosic biomass processing. Green Chem 14(8):2153–2157

    CAS  Google Scholar 

  • Ghaedi H, Ayoub M, Sufian S, Shariff AM, Lal B (2017) The study on temperature dependence of viscosity and surface tension of several Phosphonium-based deep eutectic solvents. J Mol Liq 241:500–510

    CAS  Google Scholar 

  • Gunny AAN, Arbain D, Nashef EM, Jamal P (2015) Applicability evaluation of Deep Eutectic Solvents–Cellulase system for lignocellulose hydrolysis. Bioresour Technol 181:297–302

    CAS  PubMed  Google Scholar 

  • Holmbom B, Ekman R, Eckerman C (1992) Degradation products formed during light and heat treatment of spruce groundwood. J Pulp Pap Sci 18(4):J146–J151

    CAS  Google Scholar 

  • Hon DNS, Shiraishi N(2001) Wood and Cellulosic Chemistry (second ed.), CRC Press, New York (2001)

  • Hon DS, Feist WC (1986) Weathering characteristics of hardwood surfaces. Wood Sci Technol 20(2):169–183

    CAS  Google Scholar 

  • Hunter (2008) Associates Laboratory CIEL∗a∗b∗ color scale Applications note-insight on color HenterLab, 8 (9), pp. 1–4

  • ISO 7724- 1:1984 Paints and varnishes - Colorimetry- Part 1: Principles.International Organization for Standardization, Geneva, Switzerland

  • Kim KH, Dutta T, Sun J, Simmons B, Singh S (2018) Biomass pretreatment using deep eutectic solvents from lignin derived phenols. Green Chem 20(4):809–815

    CAS  Google Scholar 

  • Li WX, Xiao WZ, Yang YQ, Wang Q, Chen X, Xiao LP, Sun RC (2021) Insights into bamboo delignification with acidic deep eutectic solvents pretreatment for enhanced lignin fractionation and valorization. Ind Crops Prod 170:113692

    CAS  Google Scholar 

  • Li P, Sirviö JA, Asante B, Liimatainen H (2018) Recyclable deep eutectic solvent for the production of cationic nanocelluloses. Carbohydr Polym 199:219–227

    CAS  PubMed  Google Scholar 

  • Liu QP, Hou XD, Li N, Zong MH (2012) Ionic liquids from renewable biomaterials: synthesis, characterization and application in the pretreatment of biomass. Green Chem 14(2):304–307

    CAS  Google Scholar 

  • Liu Y, Chen W, Xia Q, Guo B, Wang Q, Liu S, Yu H (2017) Efficient cleavage of lignin–carbohydrate complexes and ultrafast extraction of lignin oligomers from wood biomass by microwave-assisted treatment with deep eutectic solvent. Chemsuschem 10(8):1692

    CAS  PubMed  PubMed Central  Google Scholar 

  • Lynam JG, Kumar N, Wong MJ (2017) Deep eutectic solvents’ ability to solubilize lignin, cellulose, and hemicellulose; thermal stability; and density. Bioresour Technol 238:684–689

    CAS  PubMed  Google Scholar 

  • Mahmood Z, Yameen M, Jahangeer M, Riaz M, Ghaffar A, Javid I(2018) Lignin as Natural Antioxidant Capacity. In Lignin-Trends and Applications; IntechOpen: London, UK, pp. 181–205

  • Malaeke H, Housaindokht MR, Monhemi H, Izadyar M (2018) Deep eutectic solvent as an efficient molecular liquid for lignin solubilization and wood delignification. J Mol Liq 263:193–199

    CAS  Google Scholar 

  • Morais ES, Freire MG, Freire CS, Coutinho JA, Silvestre AJ (2020) Enhanced conversion of xylan into furfural using acidic deep eutectic solvents with dual solvent and catalyst behavior. Chemsuschem 13(4):784–790

    CAS  PubMed  Google Scholar 

  • Müller U, Rätzsch M, Schwanninger M, Steiner M, Zöbl H (2003) Yellowing and IR-changes of spruce wood as result of UV-irradiation. J Photochem Photobiol B 69(2):97–105

    PubMed  Google Scholar 

  • Nzokou P, Kamdem DP, Temiz A (2011) Effect of accelerated weathering on discoloration and roughness of finished ash wood surfaces in comparison with red oak and hard maple. Prog Org Coat 71(4):350–354. https://doi.org/10.1016/j.porgcoat.2011.03.028

    Article  CAS  Google Scholar 

  • Ormondroyd G, Spear M, Curling S(2015) Modified wood: review of efficacy and service life testing. Proceedings of the Institution of Civil Engineers-Construction Materials, 168(4), 187–203

  • Pandey KK (2005) A note on the influence of extractives on the photo-discoloration and photo-degradation of wood. Polym Degrad Stab 87(2):375–379

    CAS  Google Scholar 

  • Perez-Sanchez M, Sandoval M, Hernaiz MJ, Maria PDD (2013) Biocatalysis in biomass-derived solvents: the quest for fully sustainable chemical processes. Curr Org Chem 17(11):1188–1199

    CAS  Google Scholar 

  • Rowell R, Pettersen R, Han J, Rowell J, Tshabalala MA(2005) Cell wall chemistry. Handbook of wood chemistry and wood composites. Taylor & Francis Group. Ed., 1, 70–71

  • Saha S, Kocaefe D, Boluk Y, Pichette A (2013) Surface degradation of CeO2 stabilized acrylic polyurethane coated thermally treated jack pine during accelerated weathering. Appl Surf Sci 276:86–94

    CAS  Google Scholar 

  • Sandak A, Sandak J, Noël M, Dimitriou A (2021) A method for accelerated natural weathering of wood subsurface and its multilevel characterization. Coatings 11(2):126. https://doi.org/10.3390/coatings11020126

    Article  CAS  Google Scholar 

  • Sarmad S, Xie Y, Mikkola JP, Ji X (2017) Screening of deep eutectic solvents (DESs) as green CO 2 sorbents: from solubility to viscosity. New J Chem 41(1):290–301. https://doi.org/10.1039/c6nj03140d

    Article  CAS  Google Scholar 

  • Sinclair A, Jiang L, Bajwa D, Bajwa S, Tangpong S, Wang X (2018) Cellulose nanofibers produced from various agricultural residues and their reinforcement effects in polymer nanocomposites. J Appl Polym Sci 135(21):46304

    Google Scholar 

  • Smolarski N (2012) High-value opportunities for lignin: unlocking its potential. Frost & Sullivan 1:1–15

    Google Scholar 

  • Tang W, Row KH (2020) Design and evaluation of polarity controlled and recyclable deep eutectic solvent based biphasic system for the polarity driven extraction and separation of compounds. J Clean Prod 268:122306

    CAS  Google Scholar 

  • Temiz A(2005) The effect of simulated weathering on preservative treated wood Doctoral dissertation, Thesis of PhD, KTÜ, Institute of Science and Technology, Trabzon, 2005

  • Tian D, Chandra RP, Lee JS, Lu C, Saddler JN (2017) A comparison of various lignin-extraction methods to enhance the accessibility and ease of enzymatic hydrolysis of the cellulosic component of steam-pretreated poplar. Biotechnol Biofuels 10(1):1–10

    PubMed  PubMed Central  Google Scholar 

  • Timar MC, Varodi AM, Gurău L (2016) Comparative study of photodegradation of six wood species after short-time UV exposure. Wood Sci Technol 50(1):135–163

    CAS  Google Scholar 

  • Tolvaj L, Molnar Z, Magoss E (2014) Measurement of photodegradation-caused roughness of wood using a new optical method. J Photochem Photobiol B 134:23–26. https://doi.org/10.1016/j.jphotobiol.2014.03.020

    Article  CAS  PubMed  Google Scholar 

  • Tomak ED, Arican F, Gonultas O, Parmak EDS (2018) Influence of tannin containing coatings on weathering resistance of wood: Water based transparent and opaque coatings. Polym Degrad Stab 151:152–159

    CAS  Google Scholar 

  • Upton BM, Kasko AM (2016) Strategies for the conversion of lignin to high-value polymeric materials: review and perspective. Chem Rev 116(4):2275–2306

    CAS  PubMed  Google Scholar 

  • Wang H, Li J, Zeng X, Tang X, Sun Y, Lei T, Lin L (2020) Extraction of cellulose nanocrystals using a recyclable deep eutectic solvent. Cellulose 27(3):1301–1314

    CAS  Google Scholar 

  • Xu H, Peng J, Kong Y, Liu Y, Su Z, Li B, Song X, Liu S, Tian W (2020) Key process parameters for deep eutectic solvents pretreatment of lignocellulosic biomass materials: A review. Bioresour Technol 310:123416

    CAS  PubMed  Google Scholar 

  • Yang B, Zhang Q, Fei Y, Zhou F, Wang P, Deng Y (2015) Biodegradable betaine-based aprotic task-specific ionic liquids and their application in efficient SO 2 absorption. Green Chem 17(7):3798–3805

    CAS  Google Scholar 

  • Yildiz S, Tomak ED, Yildiz UC, Ustaomer D (2013) Effect of artificial weathering on the properties of heat treated wood. Polym Degrad Stab 98(8):1419–1427

    CAS  Google Scholar 

  • Zhang CW, Xia SQ, Ma PS (2016) Facile pretreatment of lignocellulosic biomass using deep eutectic solvents. Bioresour Technol 219:1–5

    CAS  PubMed  Google Scholar 

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Funding

This study was funded by the Turkish Scientific and Research Council (TUBITAK) under Project number 2209-1919B011902663. Ahmet Emre Çelik is an undergraduate student and served as the project coordinator.

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  1. Forest Industry Engineering, Faculty of Forestry, Bartin University, Bartın, Turkey

    Ahmet Emre ÇELİK & Ahmet CAN

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  1. Ahmet Emre ÇELİK
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Correspondence to Ahmet CAN.

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ÇELİK, A.E., CAN, A. Surface characterization of wood treated with acidic deep eutectic solvents. Eur. J. Wood Prod. 81, 143–157 (2023). https://doi.org/10.1007/s00107-022-01843-1

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