The Influence of Aging on the Structure and Properties of Composite Materials Based on Polyurethane and Silver Nanoparticles

AATCC Journal of Research Pub Date : 2023-11-28 DOI:10.1177/24723444231201444

E. Lysenkov, O. V. Striutskyi

{"title":"The Influence of Aging on the Structure and Properties of Composite Materials Based on Polyurethane and Silver Nanoparticles","authors":"E. Lysenkov, O. V. Striutskyi","doi":"10.1177/24723444231201444","DOIUrl":null,"url":null,"abstract":"The aging processes and their influence on structure, thermophysical and antimicrobial properties of polymer nanocomposites based on segmented polyurethane and silver nanoparticles were studied. It was established that an increase in the intensity of intermolecular interactions of polyurethane occurred regardless of the concentration of silver in the silver nanoparticles due to a change in the packing of macromolecules. It was shown that in the process of aging of composites, the effective size of crystallites of polymer matrix decreases and varies in the range of 1.35–1.50 nm. The most pronounced effect of aging is manifested on the melting temperatures of the crystalline phase of polyurethane and the degree of crystallinity. It was found that polyurethane–silver nanoparticle composites exhibit a very high inhibitory capacity against Staphylococcus aureus, Escherichia coli, and Candida albicans. It is shown that aging processes do not affect the antimicrobial characteristics of the studied materials, which indicates their stability. Due to their unique characteristics, synthesized nanocomposite films can be promising for use as antimicrobial coatings in various applications.","PeriodicalId":502144,"journal":{"name":"AATCC Journal of Research","volume":"227 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"AATCC Journal of Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1177/24723444231201444","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

The aging processes and their influence on structure, thermophysical and antimicrobial properties of polymer nanocomposites based on segmented polyurethane and silver nanoparticles were studied. It was established that an increase in the intensity of intermolecular interactions of polyurethane occurred regardless of the concentration of silver in the silver nanoparticles due to a change in the packing of macromolecules. It was shown that in the process of aging of composites, the effective size of crystallites of polymer matrix decreases and varies in the range of 1.35–1.50 nm. The most pronounced effect of aging is manifested on the melting temperatures of the crystalline phase of polyurethane and the degree of crystallinity. It was found that polyurethane–silver nanoparticle composites exhibit a very high inhibitory capacity against Staphylococcus aureus, Escherichia coli, and Candida albicans. It is shown that aging processes do not affect the antimicrobial characteristics of the studied materials, which indicates their stability. Due to their unique characteristics, synthesized nanocomposite films can be promising for use as antimicrobial coatings in various applications.

查看原文本刊更多论文

老化对基于聚氨酯和银纳米颗粒的复合材料的结构和性能的影响

研究了基于分段聚氨酯和纳米银粒子的聚合物纳米复合材料的老化过程及其对结构、热物理性能和抗菌性能的影响。结果表明，无论银纳米粒子中银的浓度如何，聚氨酯分子间相互作用的强度都会增加，这是由于大分子的堆积发生了变化。研究表明，在复合材料老化的过程中，聚合物基体结晶的有效尺寸会减小，变化范围在 1.35-1.50 nm 之间。老化对聚氨酯结晶相熔化温度和结晶度的影响最为明显。研究发现，聚氨酯-银纳米粒子复合材料对金黄色葡萄球菌、大肠杆菌和白色念珠菌具有很强的抑制能力。研究表明，老化过程不会影响所研究材料的抗菌特性，这表明它们具有稳定性。由于其独特的特性，合成的纳米复合薄膜有望用作各种应用中的抗菌涂层。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

AATCC Journal of Research

自引率

0.00%

发文量