Synergistic effects of Uncaria gambir and zinc oxide in polyvinyl alcohol films for enhanced UV and blue light shielding, antimicrobial properties, and hydrophobicity: improving application performance in sustainable packaging and protective eyewear

RSC Advances, Год журнала: 2025, Номер 15(4), С. 2766 - 2778

Опубликована: Янв. 1, 2025

This study investigates the development and characterization of a novel composite material consisting polyvinyl alcohol (PVA) integrated with Uncaria gambir (UG) zinc oxide (ZnO) as fillers. The synergistic effects UG ZnO were investigated, focusing on their ability to enhance film's properties. UV-vis spectrophotometry demonstrated that film effectively blocked all UV (UV-A UV-B) blue light wavelengths. mechanical properties significantly enhanced, tensile strength improving by 56% elasticity 38% compared pure PVA. Additionally, water contact angle measurements showed an increase from 34.4° for PVA 84.4° PVA/UG/ZnO composites, indicating substantial improvement in hydrophobicity, which suggests potential extended application environments where moisture resistance is crucial. These findings illustrate utilizing natural extracts metal oxides polymer composites applications require durable effective protection against photodegradation environmental factors. establishes foundation further exploration into biocompatible environmentally sustainable materials enhanced protective

Язык: Английский

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Fabrication of antimicrobial chitosan/ZnO nanoparticles/lecithin-montmorillonite films for food packaging application

Food Hydrocolloids, Год журнала: 2024, Номер unknown, С. 110686 - 110686

Опубликована: Сен. 1, 2024

Язык: Английский

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Preparation and characterization of polyvinyl alcohol and chitosan composite film with cassia oil encapsulated in β-cyclodextrin and its application in fresh banana

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 140246 - 140246

Опубликована: Янв. 1, 2025

Язык: Английский

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Preparation, characterization, and antibacterial properties of a soybean protein isolate/gelatin composite film containing rosemary-modified bentonite and application of fresh lemon slices

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 142516 - 142516

Опубликована: Март 1, 2025

Язык: Английский

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Preparation, characterization and tomato preservation applications of gelatin-polyvinyl alcohol composite films with temperature and pH responsive properties

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 143262 - 143262

Опубликована: Апрель 1, 2025

Язык: Английский

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Advanced Polysaccharide‐Based Multilayer Films for Fresh‐Cut Produce Packaging: Improving High Humidity Resistance With Layer‐By‐Layer Assembly and Metal Oxide Nanoparticles

Journal of Applied Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 28, 2025

ABSTRACT This study explored the modification of polysaccharide films using a combination layer‐by‐layer assembly techniques and metal oxide nanoparticles (MONPs) to enhance their performance in high‐humidity conditions. The results demonstrated that multilayer film incorporating MONPs exhibited superior characteristics compared both blending films. Notably, MONPs‐incorporated displayed significantly enhanced surface hydrophobicity (contact angle reaching 98.5°) more compact microstructure under high humidity Isothermal moisture absorption analysis revealed slower uptake kinetics nanocomposite film. optimized barrier properties were evidenced by reduced water vapor transmission rate (409.32 g m −2 24 h −1 ) oxygen (30.7 cm 3 ), coupled with decreased non‐migratory content markedly increased glass transition temperature. Mechanical testing showed remarkable improvements, MONPs‐reinforced exhibiting 55.6% higher tensile strength 83.2% greater Young's modulus relative In practical applications, effectively preserved fresh‐cut produce reducing weight loss, suppressing browning, decreasing malondialdehyde accumulation, inhibiting polyphenol oxidase activity. Furthermore, restricted microbial growth extended shelf‐life controls. Importantly, film's structural functional stability after packaging demonstrating its potential for commercial fresh‐keeping applications.

Язык: Английский

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Synthesis, characterization, and application of films made from highly substituted N-perfluoroacylated chitosan

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 282, С. 136716 - 136716

Опубликована: Окт. 18, 2024

Язык: Английский

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