Effect of graphene nanoplatelets and nano zinc oxide on gas barrier and antibacterial properties of thermoplastic nanocomposites

被引：2

作者：

Ghosh, Suman Kumar ^{[1
]}

Ganguly, Soumya Sarathi ^{[2
]}

Paul, Sangit ^{[1
]}

Ghosh, Trisita ^{[1
]}

Das, Amit Kumar ^{[2
]}

Das, Narayan Ch. ^{[1
]}

机构：

[1] Indian Inst Technol Kharagpur, Rubber Technol Ctr, Kharagpur 721302, West Bengal, India

[2] Indian Inst Technol Kharagpur, Dept Biosci & Biotechnol, Kharagpur, West Bengal, India

来源：

POLYMER ENGINEERING AND SCIENCE | 2024年 / 64卷 / 09期

关键词：

antibacterial effectiveness; barrier properties; graphene nanoplatelet; linear low-density polyethylene; nano zinc oxide; ANTIMICROBIAL ACTIVITY; THERMAL-PROPERTIES; POLYETHYLENE; NANOPARTICLES; PERFORMANCE; BEHAVIOR;

D O I：

10.1002/pen.26840

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Graphene-loaded thermoplastic nanocomposite films must be evaluated for antibacterial activity, mechanical, and barrier properties before being utilized as food packaging. Herein, economically feasible linear low-density polyethylene (LLDPE)-based flexible packaging materials were developed via the melt compounding technique at 170 degrees C temperature by taking advantage of both graphene nanoplatelets (GNP) and nano zinc oxide (ZnO) fillers. Morphological studies reveal that in composites loaded with GNP/ZnO hybrid fillers, ZnO nanoparticles form a network-like structure throughout the polymer matrix. Simultaneously, GNPs are uniformly dispersed. The inclusion of hybrid nanofiller considerably reduces both the oxygen transmission rate and the water vapor transmission rate (WVTR) in LLDPE nanocomposites. A maximum decrease of 36% and 67%, respectively, in both oxygen transmission rate and WVTR is observed for 3 wt% of hybrid filler loading in a thermoplastic matrix containing 1 wt% of nano ZnO. The antibacterial efficacy of the derived nanocomposite films is obvious against gram-positive (Bacillus subtilis) and gram-negative (Escherichia coli) bacterial strains. These nanocomposite films have the potential to be successfully utilized as flexible packaging materials owing to their improved thermal, barrier, and antibacterial effectiveness.Highlights GNP/ZnO was used as a hybrid reinforcing filler in the LLDPE matrix. ZnO nanoparticles establish a network-like morphology. LLDPE nanocomposite films exhibited excellent antibacterial activity. Oxygen and water vapor barrier properties were significantly improved. The thermoplastic composite films could be used as food packaging materials. Nano zinc oxide (ZnO) and graphene nanoplatelets (GNP) loaded linear low density polyethylene (LLDPE) nanocomposite films prepared by melt compounding technique exhibited excellent antibacterial and gas barrier properties. image

引用

页码：4181 / 4195

页数：15

共 51 条

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