杀菌性纳米杂化氟硅树脂的合成及成膜形貌  

Synthesis,Morphology and Antibacterial Properties of Bactericidal Nano-hybrid Fluorosilicone Resin

作　　者：葛萍 安秋凤[1] 谷江东 卢攀 黄良仙[1] GE Ping;AN Qiu-feng;GU Jiang-dong;LU Pan;HUANG Liang-xian(Key Laboratory of Auxiliary Chemistry and Technology for Light Chemical Industry,Shaanxi Provincial,Shaanxi University of Science and Technology,Xi'an 710021,China)

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

出　　处：《表面技术》2022年第8期418-426,434,共10页Surface Technology

基　　金：陕西省重点研发计划项目(2020ZDLGY13-11);国家科技部重点研发计划项目(2017YFB0307700)。

摘　　要：目的合成一种具有拒水、拒油与抗菌一体的防护材料。方法在酸催化下,将全氟己基乙基三甲氧基硅烷(FTMS)与有机硅杀菌剂--(三甲氧基硅丙基)十八烷基二甲基氯化铵(TMSPQ)及正硅酸乙酯(TEOS)进行水解,次序共聚,制得一种兼具良好拒水、拒油和杀菌性能的长链氟烃基/季铵基共改性的氟硅树脂(QFS)。用FT-IR、TEM、AFM、XPS等仪器表征研究了QFS的结构、成膜形貌和性能。结果新合成的QFS为典型的无机-有机纳米杂化树脂,且在透明状QFS体系中存在大量球状、纳米组分且平均粒径约为164.2 nm。受此球状结构及长链氟烃基的影响,QFS在基材表面呈现出一种凹凸不平、微观结构相对粗糙的形貌,同时在AFM扫描范围为5μm×5μm内QFS膜表面的均方粗糙度Ra达1.273 nm,且从FESEM可看出QFS涂膜微观表面由微纳米结构组成。在QFS合成时,当FTMS的加入量为25%时,QFS涂膜的水接触角(θ_(WCA))可达145.0°,滚动角最小为12°,耐油笔性最高为79次。通过抑菌圈试验,QFS对金黄色葡萄球菌和大肠杆菌均有良好的杀菌抑菌效果,其抑菌圈大小分别可达到18.1 mm和15.8 mm。同时,分别通过一锅共聚和次序共聚法合成QFS,最后从涂膜的水接触角、膜的厚度、平均粒径和粒径范围等综合考虑,选择次序共聚法合成。结论含有低表面能长链氟烃基和杀菌性季铵基的QFS制备的涂膜可从拒水、拒油和抗菌3个方面对基材起到良好的防护作用。In recent years,with the deterioration of the environment and the breeding and spread of highly pathogenic bacteria and viruses,how to inhibit bacteria and kill bacteria has become a topic of great concern.The antibacterial and bactericidal properties of silicone quaternary ammonium salt have the advantages of broad spectrum,low toxicity,high efficiency,and resistance to pH changes.After the positively charged long carbon chain quaternary ammonium group is adsorbed on the surface of negatively charged bacteria,it can be It restrains the activity of bacteria,inhibits the respiratory function of bacteria,penetrates the cell membrane and enters the bacterial cells,destroys the metabolism of intracellular enzymes and makes them die,thereby achieving the antibacterial and bactericidal effect;long-chain fluorocarbon groups can increase the water repellency of the resin.Oil repellent performance,and make it difficult for bacteria,viruses or bacteria-carrying microorganisms to adhere to the surface of the substrate after the resin treatment,and then easy to fall off and remove.Purpose to synthesize a protective material with integrated water repellent,oil repellent and antibacterial.In the presence of acid catalysis,the hydrolytic copolymerization of perfluorohexyl ethyl trimethoxysilane(FTMS)with organosilicon fungicide,(trimethoxysilpropyl)octadecyldimethyl ammonium chloride(TMSPQ)and ethyl orthosilicate(TEOS)undergoes hydrolysis and sequential copolymerization,a long chain fluoroalkyl/quaternary ammonium commodified fluorosilicone resin(QFS)with good water-repellent,oil-repellent and bactericidal properties has been prepared.The chemical structure,film morphology and performance of QFS were characterized by FT-IR,TEM,AFM,XPS and other instruments.The experiment results show that the newly synthesized QFS is a typical inorganic-organic nano hybrid resin.There are a large number of spherical and nano components in the transparent QFS system,and the average particle size is about 164.2 nm.Because of the influence of the

关 键 词：氟硅树脂 杀菌性 季铵盐 纳米粒 杂化涂层 

分 类 号：TB34[一般工业技术—材料科学与工程]