摘要
采用氨基硅烷偶联剂(AEAPTMS)、丙烯酸、丙烯酰胺对氧化石墨烯(GO)分别进行氨基化、羧基化、酰胺化改性,通过原位生长法在改性石墨烯材料表面负载氧化亚铜(Cu_(2)O),并评估改性材料的抗菌性能和分散性。20μg/mL的Cu_(2)O-氨基石墨烯(AGO)、Cu_(2)O-羧基石墨烯(CGO)、Cu_(2)O-酰胺基石墨烯(CAGO)对大肠埃希菌的抗菌率均大于99.99%,对枯草芽孢杆菌的抗菌率分别是99.99%、98.43%、99.99%。进一步采用原位聚合法制备聚酰胺6(PA6)/Cu_(2)O-AGO复合树脂,研究改性前后复合树脂的分子质量及其分布和热稳定性。与PA6/Cu_(2)O-GO复合树脂相比,PA6/Cu_(2)O-AGO复合树脂具有优异的热稳定性。由于Cu_(2)O-AGO和PA6分子链间氢键作用力增强,复合树脂的结晶度增加,复合树脂的5%热失重温度由289.8℃提高到386.0℃。
Graphene oxide(GO)was modified by amination,carboxylation and amidation with aminosilane coupling agent(AEAPTMS),acrylic acid and acrylamide,respectively.Cuprous oxide(Cu_(2)O)was loaded on the surface of the modified graphene material by in-situ growth method,and the antibacterial properties and dispersability of the modified material were evaluated.The bactericidal efficiencies of 20μg/mL of Cu_(2)O-aminographene(AGO),Cu_(2)O-carboxylvcgeaphene(CGO)and Cu_(2)O-amide grapheme(CAGO)were greater than 99.99%against Escherichia coli,and 99.99%,98.43%,99.99% against Bacillus subtilis,respectively.Further,the modified PA6/Cu_(2)O-AGO composite resin was prepared by in-situ polymerization method.The molecular weight,distribution and thermal stability of the modified composite resin were studied.Compared with PA6/Cu_(2)O-GO composite resin,PA6/Cu_(2)O-AGO composite resin had excellent thermal stability.Due to the enhancement of hydrogen bond between Cu_(2)O-AGO and PA6 molecular chains and the increase of crystallinity of composite resin,the 5% thermal weight loss temperature of composite resin increased from 289.8℃ to 386.0℃.
作者
王瑞雪
周家良
胡泽旭
俞森龙
相恒学
朱美芳
WANG Rui-xue;ZHOU Jia-liang;HU Ze-xu;YU Sen-long;XIANG Heng-xue;ZHU Mei-fang(State Key Laboratory of Advanced Fiber Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China;Jiangsu Gem Advanced Fiber Materials Research Institute Co.,Ltd,Nantong 226000,Jiangsu,China)
出处
《合成纤维》
2025年第6期1-6,共6页
Synthetic Fiber in China
基金
科技部国家重点研发计划(2022YFB3804200)
南通市科技计划项目(MS22022028)。
关键词
氧化石墨烯
聚酰胺6
复合树脂
接枝改性
graphene oxide
polyamide 6
composite resin
graft modification
