Antimicrobial polymer composites with anti-biofouling features for floating solar power plant applications: Effect of zinc oxide nanoparticles

Q2 Materials Science
RSN Sahai, Mohammed Wasim Khan, Ankur Jadhav, Manju Sharma
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引用次数: 0

Abstract

Antimicrobial hybrid polymer composites are developed for application in floating solar power plants. To avoid the degradation of the floater because of microbes living in the water as well as possible biofouling, zinc oxide (ZnO) is used as an antimicrobial agent, varying the weight percent (1, 2, and 3 wt%) within the high-density polyethylene (HDPE) matrix, along with carbon black (CB) as a reinforcing agent (1, 1.5, 2, and 2.5 wt%). Escherichia coli (facultative anaerobic) and Pseudomonas aeruginosa (aerobic-facultatively anaerobic) gram-negative bacteria formed a biofilm on HDPE in a 96-well plate for 5 days. In vitro, biofilm formation was determined by measuring absorbance (A420) in crystal violet dye, and the colony-forming unit (CFU) was determined by the spread plating technique. The biofilm formation and disruption are observed through a scanning electron microscope (SEM), where both the CFU and the SEM revealed uniform formation of biofilm onto neat HDPE. The best performance in terms of reduced biofilm formation and biofouling onto HDPE floaters was achieved for E. coli (ZnO: 2 wt% and CB: 2 wt%), whereas for Pseudomonas aeruginosa (ZnO: 3 wt% and CB: 2 wt%). Application of greener polymers and nanoparticles for future studies is highly recommended.
具有抗生物污染特性的聚合物复合材料在浮动太阳能电站中的应用:氧化锌纳米颗粒的作用
研制了用于浮动太阳能电站的抗菌杂化聚合物复合材料。为了避免水中微生物对漂浮物的降解以及可能的生物污垢,氧化锌(ZnO)被用作抗菌剂,在高密度聚乙烯(HDPE)基质中改变重量百分比(1、2和3 wt%),同时炭黑(CB)作为增强剂(1、1.5、2和2.5 wt%)。大肠杆菌(兼性厌氧)和铜绿假单胞菌(好氧兼性厌氧)革兰氏阴性菌在96孔板HDPE上形成生物膜5天。在体外,通过测定结晶紫染料的吸光度(A420)来测定生物膜的形成,通过扩散镀技术来测定菌落形成单位(CFU)。通过扫描电子显微镜(SEM)观察了生物膜的形成和破坏,其中CFU和SEM都显示生物膜在整齐的HDPE上均匀形成。在HDPE漂浮物上减少生物膜形成和生物污垢方面,大肠杆菌(氧化锌:2 wt%, CB: 2 wt%)的效果最好,而铜绿假单胞菌(氧化锌:3 wt%, CB: 2 wt%)的效果最好。强烈建议在未来的研究中应用更环保的聚合物和纳米颗粒。
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来源期刊
Polymers from Renewable Resources
Polymers from Renewable Resources Materials Science-Polymers and Plastics
CiteScore
3.50
自引率
0.00%
发文量
15
期刊介绍: Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.
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