Assessment of ultrasonic treatment on multilayer packaging composed of polyethylene and ethylene-vinyl alcohol copolymer
Abstract
While there is an increase in the non-conventional processing of foods, the impact of emerging technologies on packaging materials is scarce, limiting their application. This work evaluated the ultrasound (US) technology, applied alone or in combination with thermal processing (thermosonication), on the structure, properties and functionality of PE/EVOH38/PE multilayer flexible packaging films. Samples were processed using US (25 kHz, 9.74 W/L) alone ( 25• C) or in combination with mild thermal processing (60 • C) for up to 120 min. Packaging structure, properties and functionalities were evaluated through FTIR, DSC, XRD, SEM, mechanical and barrier properties, as well as overall migration. US treatment induced variations in relative crystallinity (XRD and DSC), but without changing the molecular or microscope structure (FTIR, SEM) of the films. As a consequence, the packaging functionality was not affected, preserving the mechanical properties (tensile test at both machine and transversal direction, and seal strength assay), water barrier (WVTR) and food-contact regulations (overall migration). As a consequence of the plasticizing effect of water on the EVOH layer, oxygen barrier (OTR) was increased, but keeping the barrier performance by remained within the expected range. Overall, the results indicate that the US-assisted treatment conditions here evaluated can be applied to PE/EVOH/PE multilayer packaging without compromising its performance.
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BibTeX
@article{castanha2026assessment,
title = {{Assessment of ultrasonic treatment on multilayer packaging composed of polyethylene and ethylene-vinyl alcohol copolymer}},
author = {Nanci Castanha and Amanda Alves Domingos Maia and Paula Fernanda Janetti Bócoli and Danielle Ito and Fiorella Balardin Hellmeister Dantas and Roniérik Pioli Vieira and Pedro Esteves Duarte Augusto and Luís Marangoni Júnior},
journal = {Next Materials},
year = {2026},
month = sep,
doi = {10.1016/j.nxmate.2026.103592},
url = {https://hal.science/hal-05756488v1},
note = {CC BY-NC 4.0},
}
RIS
TY - JOUR
TI - Assessment of ultrasonic treatment on multilayer packaging composed of polyethylene and ethylene-vinyl alcohol copolymer
AU - Nanci Castanha
AU - Amanda Alves Domingos Maia
AU - Paula Fernanda Janetti Bócoli
AU - Danielle Ito
AU - Fiorella Balardin Hellmeister Dantas
AU - Roniérik Pioli Vieira
AU - Pedro Esteves Duarte Augusto
AU - Luís Marangoni Júnior
PY - 2026
DA - 2026/09/18
JO - Next Materials
DO - 10.1016/j.nxmate.2026.103592
UR - https://hal.science/hal-05756488v1
AB - While there is an increase in the non-conventional processing of foods, the impact of emerging technologies on packaging materials is scarce, limiting their application. This work evaluated the ultrasound (US) technology, applied alone or in combination with thermal processing (thermosonication), on the structure, properties and functionality of PE/EVOH38/PE multilayer flexible packaging films. Samples were processed using US (25 kHz, 9.74 W/L) alone ( 25• C) or in combination with mild thermal processing (60 • C) for up to 120 min. Packaging structure, properties and functionalities were evaluated through FTIR, DSC, XRD, SEM, mechanical and barrier properties, as well as overall migration. US treatment induced variations in relative crystallinity (XRD and DSC), but without changing the molecular or microscope structure (FTIR, SEM) of the films. As a consequence, the packaging functionality was not affected, preserving the mechanical properties (tensile test at both machine and transversal direction, and seal strength assay), water barrier (WVTR) and food-contact regulations (overall migration). As a consequence of the plasticizing effect of water on the EVOH layer, oxygen barrier (OTR) was increased, but keeping the barrier performance by remained within the expected range. Overall, the results indicate that the US-assisted treatment conditions here evaluated can be applied to PE/EVOH/PE multilayer packaging without compromising its performance.
SN - 2949-8228
ER -