石墨烯
聚乙烯醇
材料科学
膜
静电纺丝
纳米纤维
润湿
拉曼光谱
聚合物
极限抗拉强度
化学工程
接触角
乙烯醇
食品包装
复合材料
纳米技术
化学
食品科学
生物化学
光学
物理
工程类
作者
Manjula Gupta,Lubna Sheikh,Kumar Navin,Nitish Kumar,Dara Singh Gupta,Chandrani Pramanik
标识
DOI:10.1088/2053-1591/acec34
摘要
Abstract In recent years, graphene as a biomaterial has received considerable attention due to its outstanding physio-mechanical properties. In the present work, we found superior tensile strength, hydrophobic and antibacterial activities in graphene incorporated polyvinyl alcohol (PVA) based nanofibers, prepared by electrospinning. A series of ultrafine graphene-based ink (G-Ink) incorporated PVA nanofiber (GPN) with different concentrations of graphene (0, 0.008, 0.02, 0.04, 0.06, and 0.08% w/v) was fabricated. To overcome difficulty in direct dispersing graphene into the PVA solution, we have prepared graphene-based ink for dispersing into polymer solution. The morphology, composition, mechanical behaviour, and surface wettability of these membranes was investigated. The Fourier transform infrared spectra and the Raman spectra confirmed the successful incorporation of graphene into the GPN. Graphene when used as a nanofiller in polymers, provides excellent mechanical properties (814%), hydrophobicity (40%), and antibacterial properties. In the current study we tested GPN membranes for preserving two fast rotting foods like coriander leaves and tomato. We found that GPN membrane can be used safely for food packaging applications to increase the shelf life of perishing food items, such as up to 3 days for coriander leaves and 8 days for tomatoes.
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