PVA/(ligno)nanocellulose biocomposite films. Effect of residual lignin content on structural, mechanical, barrier and antioxidant properties

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Espinosa, EduardoUniversity of Córdoba, Spain (author)

PVA/(ligno)nanocellulose biocomposite films. Effect of residual lignin content on structural, mechanical, barrier and antioxidant properties

Article/chapterEnglish2019

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Elsevier B.V.2019
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LIBRIS-ID:oai:DiVA.org:ri-39937
https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-39937URI
https://doi.org/10.1016/j.ijbiomac.2019.08.262DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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Funding details: FPU14/02278; Funding details: Universidad de Córdoba; Funding details: Ministerio de Ciencia e Innovación, MICINN, CTQ2016-78729-R; Funding text 1: The authors are grateful to Spain's DGICyT, MICINN for funding this research within the framework of the Projects CTQ2016-78729-R and supported by the Spanish Ministry of Science and Education through the National Program FPU (Grant Number FPU14/02278 ), and also to the staff of the Central Service for Research Support (SCAI) at the University of Córdoba. Appendix A
Nanocelluloses with and without residual lignin were isolated from wheat straw. In addition, the effect of TEMPO-mediated oxidation on the production of lignin-containing nanocellulose was studied. The different nanocelluloses were used as reinforcing agent in Poly(vinyl alcohol) films. The morphology, crystallinity, surface microstructure, barrier properties, light transmittance, mechanical and antioxidant properties were evaluated. The translucency of films was reduced by the addition of nanocellulose, however, the ability to block UV-light increased from 10% for PVA to >50% using lignin-containing nanocellulose, and 30% for lignin-free samples. The mechanical properties increased considerably, however, for loads higher than 5% a negative trend was observed presumptively due to a clustering of nanocellulose components in PVA matrix. The barrier properties of the films were improved with the use of nanocellulose, especially at small amounts (1–3%). The antioxidant capacity of films was increased up to 10% using lignin-containing nanocellulose compared to 4.7% using PVA. © 2019 Elsevier B.V.

Subject headings and genre

Biocomposite films
Lignin effect
Nanocellulose

Added entries (persons, corporate bodies, meetings, titles ...)

Bascón-Villegas, IsabelUniversity of Córdoba, Spain (author)
Rosal, AntonioUniversity Pablo de Olavide, Spain (author)
Pérez-Rodríguez, FernandoUniversity of Córdoba, Spain (author)
Chinga-Carrasco, GaryRISE,PFI(Swepub:ri)garychingaca@ri.se (author)
Rodríguez, AlejandroUniversity of Córdoba, Spain (author)
University of Córdoba, SpainUniversity Pablo de Olavide, Spain (creator_code:org_t)

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In:International Journal of Biological Macromolecules: Elsevier B.V.141, s. 197-2060141-81301879-0003

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