Modification of rice hull powder by in situ generation of silver nanoparticales for antibacterial composite filler applications

IF 2.8 4区工程技术 Q2 POLYMER SCIENCE

Macromolecular Research Pub Date : 2024-03-25 DOI:10.1007/s13233-024-00257-7

A. Ganesh Babu, S. S. Saravanakumar, B. Balavairavan, P. Senthamaraikannan

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引用次数: 0

Abstract

It is important to reduce environmental problems caused by biowaste materials. The large amount of biowaste generated causes serious problems on a global scale. The majority of waste produced is recycled, disposed of, or left untreated in landfills. Methane gas produced by organic waste in landfills contributes to the greenhouse impact and creates issues with leachate and odor. Furthermore, as these organic wastes decompose in landfills, toxic substances that produce unpleasant aromas and contaminate soil and aquatic habitats are discharged. The shortcomings of the traditional approach have put pressure on the waste management, farming, and industrial sectors to develop environmentally friendly ways to handle these biodegradable wastes with less pollution. According to the latest survey, the most generated biowaste was rice hull. Rice hull powder (RHP) needs some modifications for extensive applications as filler materials. By using a one-step hydrothermal process, the silver nanoparticles (AgNPs) were generated and mixed with rice hull powder. The modified rice hull powder (MRHP) was characterized by FTIR, XRD, FESEM, EDX, and thermal analysis. Through the FESEM image, the presence of small spherical-shaped particles clarifies the presence of in-situ generated AgNPs. FTIR study reveals that there is no chemical interaction between silver nanoparticles and RHP observed while generation of MRHP. The Xrd image signifies the presence of a broad hump along with a few sharp peaks clarifies that the semi-crystalline nature of MRHP. The MRHP records a slight increase in maximum inflection temperature at 365 °C due to the addition of thermally stable silver nanoparticles with 28.5 percent of the remaining residual mass. The addition of silver nanoparticles makes the MRHP has significantly improved the diameter of the zone of inhibition by 27.6 mm to 30.7 mm. This impressive change in properties suggests that the MRHP can be utilized as filler along with polymer matrices for high thermal applications.

Graphical abstract

In situ generation of silver nanoparticles on rice hull powder

Abstract Image

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通过原位生成银纳米粒子改性稻壳粉，用于抗菌复合填料

减少生物废料造成的环境问题非常重要。产生的大量生物垃圾在全球范围内造成了严重问题。产生的大部分废物被回收、丢弃或留在垃圾填埋场不加处理。垃圾填埋场中的有机废物产生的甲烷气体会对温室造成影响，并产生沥滤液和臭味问题。此外，当这些有机废物在垃圾填埋场中分解时，会排放出产生难闻气味、污染土壤和水生生境的有毒物质。传统方法的弊端给废物管理、农业和工业部门带来了压力，迫使他们开发环保方法来处理这些可生物降解的废物，同时减少污染。根据最新调查，产生最多的生物废物是稻壳。稻壳粉（RHP）需要经过一些改良才能广泛用作填充材料。通过一步水热法，生成了银纳米粒子（AgNPs）并与稻壳粉混合。对改性稻壳粉（MRHP）进行了傅立叶变换红外光谱、XRD、FESEM、EDX 和热分析表征。通过 FESEM 图像，小球形颗粒的存在明确了原位生成的 AgNPs 的存在。傅立叶变换红外光谱研究表明，在生成 MRHP 时，银纳米粒子与 RHP 之间没有发生化学作用。Xrd 图像显示存在一个宽驼峰和几个尖锐的峰值，这说明 MRHP 具有半晶体的性质。由于添加了热稳定的纳米银颗粒（占剩余质量的 28.5%），MRHP 在 365 °C 处的最大拐点温度略有升高。在 MRHP 中添加纳米银粒子后，抑制区的直径从 27.6 毫米显著增加到 30.7 毫米。这种令人印象深刻的性能变化表明，MRHP 可与聚合物基质一起用作高热应用的填料。

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.