微波辅助合成载银蒙脱土/水性聚氨酯纳米复合抗菌材料的制备及表征  

Preparation and Characterization of Antibacterial Waterborne Polyurethane/Silver-Montmorillonite Nanocomposite

作　　者：何臣臣 刘源森[2,3,4] 徐长安 唐旭 林凌[2] 王罗新[1] 陈少华[1] 刘渊 Chenchen He;Yuansen Liu;Chang＇an Xu;Xu Tang;Ling Lin;Luoxin Wang;Shaohua Chen;Yuan Liu(College of Materials Science ＆ Engineering,Wuhan Textile University,Wuhan 430073,China;Engineering Research Center of Marine Biological Resource Comprehensive Utilization,Third Institute of Oceanography,State Oceanic Administration,Xiamen 361005,China;Polymer Research Institute,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China;Fufian Provincial Key Laboratory of Biochemical Technology（Huaqiao University）,Xiamen 361021,China)

机构地区：[1]武汉纺织大学材料科学与工程学院,湖北武汉430073 [2]国家海洋局第三海洋研究所国家海洋局海洋生物资源综合利用工程技术研究中心,福建厦门361005 [3]四川大学高分子研究所高分子材料工程国家重点实验室,四川成都610065 [4]福建省生物化工技术重点实验室(华侨大学),福建厦门361021

出　　处：《高分子材料科学与工程》2018年第7期162-166,共5页Polymer Materials Science & Engineering

基　　金：福建省科技计划项目(2014Y0043;2015Y0034);福建省海洋高新产业发展专项(闽海洋高新[2015]15号);厦门南方海洋研究中心项目(14GQT61HJ31;15GZP023NF01);厦门市科技计划(3502Z20172010);海洋公益性行业科研专项经费(201505029);中国亚太经合组织合作基金(HV181103-18(1))

摘　　要：采用绿色的微波辐射辅助还原合成载银蒙脱土,再将其与水性聚氨酯复合制备抗菌性复合材料。通过扫描电镜、X射线能谱、透射电镜、热重分析、力学性能、抗菌实验等分别研究了微波合成载银蒙脱土及载银蒙脱土/水性聚氨酯复合材料的表面结构、热稳定性、力学性能、抗菌性能等。实验结果表明,通过绿色的微波辐射辅助还原法于蒙脱土界面合成了粒径小、分布均匀的纳米银单质,将该载银蒙脱土引入到水性聚氨酯中,可提高载银蒙脱土/水性聚氨酯复合材料的热稳定性及力学性能,硬段的最大失重温度上升了11℃,拉伸强度和断裂伸长率分别提高了32%和13%;抗菌性能研究表明复合材料对大肠杆菌和金黄色葡萄球菌具有良好的抑制效果,该复合材料在抗菌材料领域有广泛的应用前景。Silver-montmorillonite（ Ag-MT） was effectively synthesized by microwave-assisted synthesis method in the absence of any reducing agent. Waterborne polyurethane/silver-montmorillonite（ WPU/Ag-MT） antibacterial nanocomposites were then prepared by incorporating Ag-MT into WPU. The morphology,thermal properties,mechanical properties and antibacterial activity of WPU/Ag-MT nanocomposites films were characterized by SEM,TEM,EDS,TGA,tensile test and inhibition zone test. The results show that the microwave irradiation-assisted synthesis process successfully yields MT surface with small-sized and uniform distribution of sliver nanoparticles. The thermal stability and mechanical properties of waterborne polyurethane are effectively improved by incorporating Ag-MT. The maximum mass loss temperature of the hard segment increases by 11 ℃. The tensile strength and elongation at break increase by 32% and 13% respectively. The antibacterial test indicates that the WPU/Ag-MT nanocomposites exhibit excellent antibacterialactivity against E. coli and S. aureus. The results therefore reveal that WPU/Ag-MMT nanocomposite is a promising antibacterial material that can be used for antibacterial field.

关 键 词：微波辅助合成 纳米银 蒙脱土 水性聚氨酯 抗菌性 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]