Valorization of Corn Bran-derived Carbohydrate Polymers for Developing Biodegradable Packaging Films

Journal of Polymers and the Environment, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Language: Английский

Enhanced Xylan/PVA Composite Films via Nano-ZnO Reinforcement for Sustainable Food Packaging

Polymers, Journal Year: 2025, Volume and Issue: 17(8), P. 1080 - 1080

Published: April 16, 2025

The development of biodegradable alternatives to petroleum-based packaging is essential for environmental sustainability. This study presents a novel approach enhance the performance hemicellulose-based films by fabricating xylan/polyvinyl alcohol (PVA) composites reinforced with zinc oxide nanoparticles (nano-ZnO). To address nano-ZnO agglomeration, sodium hexametaphosphate (SHMP) was utilized as dispersant, while sorbitol improved film flexibility. composite were prepared via solution casting, and effects content (0–2.5 wt%) on mechanical, thermal, barrier properties systematically evaluated. Results showed that at 2 wt% loading, tensile strength increased from 15.0 MPa (control) 26.15 MPa, representing 74% enhancement, oxygen permeability decreased 1.83 0.50 (cm3·μm)/(m2·d·kPa). Additionally, thermal stability also due hydrogen bonding uniform nanoparticle dispersion. At this optimized hydrophobcity maximized, contact angle peaking 74.4° water vapor decreasing 18% (1.53·10−6·g·h−1·m−1·Pa−1). Excessive loading (>2 induced particle generating stress concentrators disrupted polymer–nanoparticle interface compromised mechanical integrity. These findings highlight potential nano-ZnO-modified xylan/PVA sustainable, high-performance conventional packaging. synergistic use SHMP provides strategy designing eco-friendly materials tunable properties, advancing biomass in food preservation applications.

Language: Английский

Applications of Natural Polymers in the Grapevine Industry: Plant Protection and Value-Added Utilization of Waste

Polymers, Journal Year: 2024, Volume and Issue: 17(1), P. 18 - 18

Published: Dec. 25, 2024

The grapevine industry is confronted with challenges such as plant stress from environmental factors and microbial infections, alongside the need for sustainable waste management practices. Natural polymers offer promising solutions to these issues due their biocompatibility, biodegradability, functional versatility. This review explores dual role of natural in enhancing industry: protective agents against various stressors carriers delivery valuable compounds recovered wastes. We examine use chitosan, alginate, cellulose formulating bio-based coatings treatments that bolster resistance abiotic stress, pathogens, pests. Additionally, delves into innovative utilization residues, including skins, seeds, stems, sources polyphenols other bioactive compounds. These can be efficiently encapsulated polymer matrices applications agriculture, food, pharmaceuticals. Key topics include mechanisms action, benefits, limitations polymer-based interventions, well case studies demonstrating practical implementation vineyards. also addresses future research directions, emphasizing integrated approaches enhance sustainability economic viability industry.

Language: Английский