文章摘要
张鹏飞,陈晓东.贻贝启发蒙脱石-银/聚乳酸抗菌膜的制备及其性能[J].精细化工,2019,36(2):0
贻贝启发蒙脱石-银/聚乳酸抗菌膜的制备及其性能
Preparation and properties of mussel-inspired MMT-AgNPs/polylactic acid composite antibacterial film
投稿时间:2018-05-31  修订日期:2018-09-19
DOI:
中文关键词: 贻贝启发  纳米银  聚乳酸  抗菌膜
英文关键词: mussel-inspiration  nano silver  polylactic acid  antibacterial film  
基金项目:国家重点研发计划政府间国际科技创新合作重点专项 (2016YFE0101200);国家自然科学基金项目(21676172)
作者单位E-mail
张鹏飞 苏州大学 372471207@qq.com 
陈晓东 苏州大学 xdchen@mail.suda.edu.cn 
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中文摘要:
      受自然界贻贝粘附现象的启发,利用聚多巴胺(PDA)作为二次反应平台,绿色合成了一种纳米银(AgNPs)负载蒙脱石(MMT-AgNPs)复合抗菌颗粒,通过溶剂挥发法将聚乳酸(PLA)和MMT-AgNPs共混制备了复合抗菌膜(PLA/PDA/MMT-AgNPs)。利用红外光谱(FTIR)、X射线衍射(XRD)、透射电镜(TEM)和热重分析(TGA)对MMT-AgNPs的物质组成、物相结构、微观形貌、热稳定性进行了测定。对所制备的PLA/PDA/MMT-AgNPs复合抗菌膜的微观形貌、物理性能和抗微生物活性进行了研究。结果表明:PDA成功地对MMT进行了改性,PDA改性的MMT仍保持原来的物相结构,AgNPs在MMT表面成功负载,负载量达到12.2wt%。PLA/PDA/MMT-AgNPs复合抗菌膜的拉伸强度显著增强,最高增长了32.6%。由于AgNPs极强的抗菌作用,仅添加少量MMT-AgNPs的复合抗菌膜对大肠杆菌和金黄色葡萄球菌表现出了优异的抗菌作用,抑菌率均达到了95%以上。
英文摘要:
      Inspired by the adhesion of mussels in nature, a facile green approach to the synthesis of silvernanoparticles (AgNPs) loaded montmorillonite composite antibacterial particle (MMT-AgNPs) functionalized by using polydopamine (PDA) as a secondary reaction platform is reported.And polylactide(PLA)/PDA/MMT-AgNPs composite antibacterial film with different filler loading was prepared by the solvent evaporation method. Thematerial composition, phase structure, microstructureand thermal stability of MMT-AgNPs were characterized by FTIR, XRD, TEM and TGA.The microstructure, physical properties and antimicrobial activity of PLA/PDA/MMT-AgNPs composite antibacterial film were also studied. And the results showed that the modification of polydopamine made the silver nanoparticles successfully loaded on MMT and the loading of AgNPs was 3.4%wt.The PDA modified MMT remained the original phase structure. Thetensile strength of PLA/PDA/MMT-AgNPs composite antibacterial film increased significantly with a maximum increase of 32.6%. Because of the synergistic antibacterial effect of PDA and AgNPs,the antimicrobial ability of MMT-AgNPs filled PLA composites at very low content of MMT-AgNPs is remarkable for S. aureus and E. coli ,and the bacteriostasis rate was up to 95%.
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