Sodium citrate as an eco-friendly complexing agent for the bioscouring treatment of the cellulosic/lignocellulosic fabrics
- 58 Downloads
A 50% of cotton–50% of flax fabric was subjected to an enzymatic treatment (bioscouring) in ultrasound for removing the compounds which could negatively affect the further specific technological processes as whitening and dyeing. During the scouring process, some parameters of the fabrics are improved. Even EDTA is usually used as a chelating agent in the pretreatments of the fabrics, recent studies aimed to identify new biodegradable complexing agents. In this study, we present the results obtained for bioscouring treatment of the cellulosic/lignocellulosic fabrics in the presence of sodium citrate as a complexing agent. The treatments were made in 0.1 M phosphate buffer of pH 8 and ultrasound media. The samples were immersed in an aliquot containing the commercial pectinolytic product BEISOL PRO, Denimcol Wash-RGN as a surfactant and sodium citrate or EDTA (ethylenediaminetetraacetic acid). The reactions were conducted by varying the enzyme concentration and action time using a central, rotatable second-order compound program. All the parameters determined after bioscouring [weight loss, hydrophilicity, whiteness index, yellowness index, tensile strength, elongation at break, the relative absorbance (A1731) from FT-IR spectra, color strength (K/S) and color difference (ΔE*ab)] of the investigated samples showed in the case of sodium citrate (an eco-friendly biodegradable compound) treatments better or comparable values to treatments conducted using EDTA (non-biodegradable compound).
KeywordsFlax–cotton fabrics Bioscouring Complexing agents Ultrasound Pectinolytic product
This work was supported by a grant of the Romanian National Authority for Scientific Research and Innovation, CNCS—UEFISCDI, project number PN-II-RU-TE-2014-4-1370 and “Centru de Cercetare în Stiinte Tehnice si Naturale-CESTN” co-funded by European Union through European Regional Development Fund Structural Operational Program “Increasing of Economic Competitiveness” Priority axis 2. Operation 2.2.1. POSCCE Nr. 621/2014 POS-CCE.
- Dochia M, Gavrilaș S, Pustianu M, Tomescu D, Copolovici DM (2016) Comparative study regarding the influence of the complexing agents EDTA and sodium citrate on the 50% flax–50% cotton fabrics during the bioscouring treatment. In: Proceedings of 16th international multidisciplinary scientific geoconference SGEM 2016. Book 6, Nano, bio and green-technologies for a sustainable future, conference proceedings, vol III. pp 223–230. https://doi.org/10.5593/sgem2016hb63 (ISBN 978-619-7105-79-7, ISSN 1314-2704)
- Hebeish A, Hashem M, Ramadan MA, Sadek B, Abdel-Hady M (2012) Bioscouring aided by EDTA and β-cyclodextrin for purification of loomstate cotton and blend fabrics. RJTA 16:127–138Google Scholar
- Öztürk HB, Vu-Manh H, Bechtold T (2009) Interaction of cellulose with alkali metal ions and complexed heavy metals. Lenzing Ber 87:142–150Google Scholar
- Stanescu MD, Dochia M, Radu D, Sirghie C (2010) Green solution for cotton scouring. Fibres Text East Eur 18:109–111Google Scholar
- Thompson AL, Pauli D, Tomasi P, Yurchenko O, Jenks MA, Dyer JM, Gore MA (2017) Chemical variation for fiber cuticular wax levels in upland cotton (Gossypium hirsutum L.) evaluated under contrasting irrigation regimes. Ind Crop Prod 100:153–162. https://doi.org/10.1016/j.indcrop.2017.02.030 CrossRefGoogle Scholar