Development and Characterization of Electrospun Fiber-Based Poly(ethylene-co-vinyl Alcohol) Films of Application Interest as High-Gas-Barrier Interlayers in Food Packaging
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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INVESTIGACIONMetadata
Title
Development and Characterization of Electrospun Fiber-Based Poly(ethylene-co-vinyl Alcohol) Films of Application Interest as High-Gas-Barrier Interlayers in Food PackagingAuthor (s)
Date
2021-07-01Publisher
Multidisciplinary Digital Publishing InstituteISSN
2073-4360Bibliographic citation
Melendez-Rodriguez, B.; Torres-Giner, S.; Zavagna, L.; Sammon, C.; Cabedo, L.; Prieto, C.; Lagaron, J.M. Development andCharacterization of ElectrospunFiber-Based Poly(ethylene-co-vinylAlcohol) Films of Application Interestas High-Gas-Barrier Interlayers inFood Packaging. Polymers 2021,13, 2061. https://doi.org/10.3390/polym13132061Type
info:eu-repo/semantics/articlePublisher version
https://www.mdpi.com/2073-4360/13/13/2061Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
In the present study, poly(ethylene-co-vinyl alcohol) with 44 mol % ethylene content(EVOH44) was managed to be processed, for the first time, by electrospinning assisted by the coaxialtechnology of solvent jacket. ... [+]
In the present study, poly(ethylene-co-vinyl alcohol) with 44 mol % ethylene content(EVOH44) was managed to be processed, for the first time, by electrospinning assisted by the coaxialtechnology of solvent jacket. In addition to this, different suspensions of cellulose nanocrystals(CNCs), with contents ranging from 0.1 to 1.0 wt %, were also electrospun to obtain hybrid bio-/non-bio nanocomposites. The resultant fiber mats were thereafter optimally annealed to promoteinterfiber coalescence at 145◦C, below the EVOH44melting point, leading to continuous transparentfiber-based films. The morphological analysis revealed the successful distribution of CNCs intoEVOH44up to contents of 0.5 wt %. The incorporation of CNCs into the ethylene-vinyl alcoholcopolymer caused a decrease in the crystallization and melting temperatures (TCand Tm) of about12 and 7◦C, respectively, and also crystallinity. However, the incorporation of CNCs led to enhancedthermal stability of the copolymer matrix for a nanofiller content of 1.0 wt %. Furthermore, theincorporation of 0.1 and 0.5 wt % CNCs produced increases in the tensile modulus (E) of ca. 38% and28%, respectively, but also yielded a reduction in the elongation at break and toughness. The oxygenbarrier of the hybrid nanocomposite fiber-based films decreased with increasing the CNCs content,but they were seen to remain high barrier, especially in the low relative humidity (RH) regime, i.e.,at 20% RH, showing permeability values lower than 0.6×10−20m3·m·m−2·Pa−1·s−1. In generalterms, an optimal balance in physical properties was found for the hybrid copolymer compositewith a CNC loading of 0.1 wt %. On the overall, the present study demonstrates the potential ofannealed electrospun fiber-based high-barrier polymers, with or without CNCs, to develop novelbarrier interlayers to be used as food packaging constituents. [-]
Is part of
Polymers, 2021,13, 2061.Project code
RTI2018-097249-B-C22
Project title or grant
Envase activo multicapa termoformable de alta barrera basado en economía biocircular (ocean-pack)
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info:eu-repo/semantics/openAccess
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