Assessment of Bleached and Unbleached Nanofibers from Pistachio Shells for Nanopaper Making
dc.contributor.author | Robles Barrios, José Eduardo | |
dc.contributor.author | Izaguirre Aróstegui, Nagore | |
dc.contributor.author | Martín Cipitria, Ander | |
dc.contributor.author | Moschou, Dimitra | |
dc.contributor.author | Labidi Bouchrika, Jalel | |
dc.date.accessioned | 2021-03-15T13:17:51Z | |
dc.date.available | 2021-03-15T13:17:51Z | |
dc.date.issued | 2021-03-04 | |
dc.identifier.citation | Molecules 26(5) : (2021) // Article ID 1371 | es_ES |
dc.identifier.issn | 1420-3049 | |
dc.identifier.uri | http://hdl.handle.net/10810/50638 | |
dc.description.abstract | Cellulose and lignocellulose nanofibrils were extracted from pistachio shells utilizing environmentally friendly pulping and totally chlorine-free bleaching. The extracted nanofibers were used to elaborate nanopaper, a continuous film made by gravimetric entanglement of the nanofibers and hot-pressed to enhance intramolecular bonding. The elaborated nanopapers were analyzed through their mechanical, optical, and surface properties to evaluate the influence of non-cellulosic macromolecules on the final properties of the nanopaper. Results have shown that the presence of lignin augmented the viscoelastic properties of the nanopapers by ≈25% compared with fully bleached nanopaper; moreover, the hydrophobicity of the lignocellulose nanopaper was achieved, as the surface free energy was diminished from 62.65 to 32.45 mNm−1 with an almost non-polar component and a water contact angle of 93.52°. On the other hand, the presence of lignin had an apparent visual effect on the color of the nanopapers, with a ΔE of 51.33 and a ΔL of −44.91, meaning a substantial darkening of the film. However, in terms of ultraviolet transmittance, the presence of lignin resulted in a practically nonexistent transmission in the UV spectra, with low transmittance in the visible wavelengths. In general, the presence of lignin resulted in the enhancement of selected properties which are desirable for packaging materials, which makes pistachio shell nano-lignocellulose an attractive option for this field. | es_ES |
dc.description.sponsorship | The authors would like to acknowledge the University of the Basque Country UPV/EHU for financially supporting this work. E.R. wishes to acknowledge the tenure track position “Biobased materials” part of E2S UPPA supported by the “Investissements d’Avenir” French program managed by ANR (ANR-16-IDEX-0002). N.I. wishes to acknowledge the Basque Government for financial support through the PIF19-183 contract. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | |
dc.subject | pistachio shells | es_ES |
dc.subject | organosolv | es_ES |
dc.subject | lignocellulose | es_ES |
dc.subject | nanofibers | es_ES |
dc.title | Assessment of Bleached and Unbleached Nanofibers from Pistachio Shells for Nanopaper Making | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2021-03-12T14:40:45Z | |
dc.rights.holder | 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/1420-3049/26/5/1371/htm | es_ES |
dc.identifier.doi | 10.3390/molecules26051371 | |
dc.departamentoes | Ingeniería química y del medio ambiente | |
dc.departamentoeu | Ingeniaritza kimikoa eta ingurumenaren ingeniaritza |
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Except where otherwise noted, this item's license is described as 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).