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dc.contributor.authorManich Bou, Albert M.
dc.contributor.authorLis Arias, Manuel José
dc.contributor.authorPerez Renetero, Sonia
dc.contributor.authorRiba Moliner, Marta
dc.contributor.authorMijas Vélez, Gabriela Dayana
dc.contributor.authorMartí Gelabert, Meritxell
dc.contributor.authorCayuela Marín, Diana
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Enginyeria Tèxtil i Paperera
dc.date.accessioned2021-12-02T11:24:36Z
dc.date.available2021-12-02T11:24:36Z
dc.date.issued2021-09-20
dc.identifier.citationManich, A.M. [et al.]. Influence of alkaline delignification time on the moisture uptake behaviour of hemp. "Journal of the Textile Institute", 2021, vol. 113, núm. 10, p. 2263-2273.
dc.identifier.issn0040-5000
dc.identifier.urihttp://hdl.handle.net/2117/357660
dc.description.abstractThe influence of the alkaline delignification of hemp on its moisture uptake has been studied under the project “Preparation and functionalization of hemp for textile substrates” focussed on the reduction of cotton imports for the manufacturing of clothing, household textiles and medical devices. The project looks for the partial replacement of cotton by hemp on the production of natural cellulosic textiles. Hemp fibres are alkaline delignified at different times to evaluate its effect on their moisture uptake behaviour to evaluate the ability of replacing cotton in the next-to-skin goods manufacturing. The paper gives three easy tools to analyse the moisture uptake behaviour by determining the sorption ratio, the hysteresis and the parameters of the isotherms fitted using three different models (GAB, Hailwood-Horrobin and Dent) to the absorption desorption isotherms. The samples of the original and delignified hemp have been subjected to moisture absorption/desorption trials from 5% to 95% RH at 25 º C. Sorption ratio and hysteresis reveal the greater influence of lignin on moisture uptake at low relative humidities, while at high, was cellulose which plays the most important role. The models fitted to the isotherms show that delignification decreases the size of the monolayer that, in desorption results always greater than in absorption. The energy constants of the monolayer for delignified fibres in absorption were higher than those for the original fibres, while the opposite occurred in desorption. Lignin caused great differences between absorption and desorption. The energy constants of the multilayer show a greater range of variation in delignified samples than in the original one, and results in absorption were higher than those in desorption. Delignification time of 3 h reached the highest cellulose content which best approached to the cellulose content of cotton causing that the moisture uptake behaviour drew near to it, especially at higher relative humidity
dc.format.extent12 p.
dc.language.isoeng
dc.rightsAttribution 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/
dc.subject.lcshHemp
dc.subject.lcshHysteresis
dc.subject.lcshMoisture
dc.subject.lcshTextile fibers
dc.subject.lcshPlant fibers
dc.subject.otherHemp
dc.subject.otherAlkaline delignification
dc.subject.otherMoisture uptake behaviour
dc.subject.otherModelling
dc.subject.otherSorption ratio
dc.subject.otherHysteresis
dc.titleInfluence of alkaline delignification time on the moisture uptake behaviour of hemp
dc.typeArticle
dc.subject.lemacCànem
dc.subject.lemacHistèresi
dc.subject.lemacHumitat
dc.subject.lemacFibres tèxtils
dc.subject.lemacFibres vegetals
dc.contributor.groupUniversitat Politècnica de Catalunya. POLQUITEX - Materials Polimérics i Química Téxtil
dc.contributor.groupUniversitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil
dc.identifier.doi10.1080/00405000.2021.1977498
dc.relation.publisherversionhttps://www.tandfonline.com/doi/full/10.1080/00405000.2021.1977498
dc.rights.accessOpen Access
local.identifier.drac32255616
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO/1PE/MAT2016-79352-R
local.citation.authorManich, A.M.; Lis, M.; Perez-Rentero, S.; Riba-Moliner, M.; Mijas, G.; Martí, M.; Cayuela, D.
local.citation.publicationNameJournal of the Textile Institute
local.citation.volume113
local.citation.number10
local.citation.startingPage2263
local.citation.endingPage2273


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