Chitosan/Graphene Oxide/Ag Nanocomposites Loaded in Polyvinyl Alcohol Films as Biodegradable, UV‐Blocking, and Antibacterial Film for Fruit Packaging

Wiley - Tập 142 Số 13 - 2025
Nhung Thi Tran1, Giang Tien Nguyen1, Tam Minh Le1, A. Huynh1
1Ho Chi Minh City University of Technology and Education, Ho Chi Minh City, Vietnam

Tóm tắt

ABSTRACT

The polyvinyl alcohol/chitosan/graphene oxide/Ag composite films are facilely fabricated as active multifunctional food packaging materials. The AgNPs of less than 10 nm immobilized onto CS/GO matrices are in situ synthesized by using NaBH4 as a reductant. The effect of different amounts of Ag and CS:GO weight ratios on the mechanical properties, water resistance, optical properties, thermal stability, and antibacterial activities of various films are systematically investigated. The composite film obtained at 0.5 wt% AgNP loading and a CS:GO ratio of 5:1 demonstrates significantly improved tensile strength (33.07 MPa, 1.7 times higher), reduced water swelling (2.4 times lower), increased contact angle (71.08° vs. 53.54°), and enhanced thermal stability compared to the neat PVA film. Additionally, these composite films exhibit excellent bacterial killing and inhibition activities against Escherichia coli and Staphylococcus aureus , with zones of inhibition of 10.09 nm and 12.66 mm, respectively. Interestingly, no viable bacteria were found with the film‐forming dispersion at 10 μg/mL. Furthermore, the fabricated films exhibit excellent UV‐blocking effects, sufficiently protecting exposed green plums from UV damage for 10 days. The membrane‐packed acerola fruits also demonstrate better freshness, slower ripening rate, and no signs of microbial growth as compared to those packed with commercial polyethylene film.

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Tài liệu tham khảo

10.1016/j.foodhyd.2022.108305

10.1016/j.ijbiomac.2019.12.230

10.1111/1541-4337.12832

10.1155/2022/2745416

10.1007/s00289-021-03763-1

10.1016/j.jmrt.2023.03.025

10.1016/j.ijbiomac.2023.124607

10.1002/fft2.342

10.1016/j.ijbiomac.2024.131248

10.1016/j.mtcomm.2023.107529

10.1016/j.fpsl.2023.101075

10.1016/j.carbpol.2018.07.030

10.1016/j.foodhyd.2018.10.013

10.1002/jccs.202000179

10.1016/j.msec.2014.08.031

10.1007/s11356-015-5668-z

10.1038/s41598-020-80013-w

10.1039/D2RA00561A

10.1016/j.fpsl.2022.100876

10.1016/j.foodhyd.2022.108329

10.1021/acsami.6b07510

10.1016/j.jece.2022.107840

10.1016/j.colsurfa.2018.06.052

10.1016/j.apsusc.2018.05.009

10.1016/j.fpsl.2022.100991

10.1021/acsami.2c10869

10.1016/j.foodhyd.2021.107328

10.1016/j.fbio.2020.100609

10.1016/j.reactfunctpolym.2023.105634

10.1016/j.tifs.2020.01.002

10.1016/j.ijbiomac.2023.127887

10.1016/j.ijbiomac.2024.133043

10.1016/j.ijbiomac.2024.129545

10.1039/D3VA00351E

10.1021/acsomega.2c03685

10.1007/s13197-018-3309-5

10.1016/j.synthmet.2020.116550

10.1016/j.colsurfb.2013.08.006

10.1039/C5EN00086F

10.1007/s11468-020-01121-x

10.1016/j.cplett.2018.01.003

10.1016/j.elspec.2014.07.003

10.1016/j.carbpol.2018.06.090

10.1016/j.carbpol.2016.08.026

10.1016/j.ijbiomac.2020.02.048

10.1016/j.ijbiomac.2022.12.020

10.1016/j.ijbiomac.2023.128297

10.1016/j.eurpolymj.2020.109984

10.1016/j.synthmet.2021.116957

10.1016/j.carbpol.2020.116049

10.1088/2053-1591/ad6ff8

10.1177/8756087916682553

10.1016/j.carbpol.2017.10.045

10.1021/ed100468u

10.1021/acsami.9b03146

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Tập 142 Số 13

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