溶剂热法原位制备抗菌EP/纳米TiO2复合材料  

In-situ Solvothermal Synthesis of Antibacterial Epoxy/Nano-TiO2 Composites

作　　者：吴纯[1] 闫永思 王昱程 戚嵘嵘[1] Wu Chun;Yan Yongsi;Wang Yucheng;Qi Rongrong(School of Chemistry and Chemical Engineering, Shanghai 200240, China)

机构地区：[1]上海交通大学化学化工学院

出　　处：《工程塑料应用》2019年第10期24-29,共6页Engineering Plastics Application

摘　　要：为了提升环氧树脂(EP)的抗菌性能,延长其使用寿命,采用溶剂热法原位制备了含纳米TiO2的固化剂,之后加入EP固化得到透明的抗菌EP/纳米TiO2复合材料。通过X射线衍射证实了在EP基体中成功地原位生成了纳米TiO2粒子,并研究了其原位合成机理。通过扫描电子显微镜和透射电子显微镜观察到纳米TiO2粒子能在EP基体中良好分散。仅含1.4%TiO2的EP/纳米TiO2复合材料对大肠杆菌和金黄色葡萄球菌的抗菌率均达到100%,是纯EP的2.6和2.8倍;弯曲强度达87.25MPa,相比纯EP的弯曲强度提高了108%;纳米TiO2能有效促进EP的固化过程,而对EP的玻璃化转变温度几乎没有影响。In order to improve the antibacterial properties of epoxy resin (EP) and extend its service life,EP curing agent containing nano-TiO2 was prepared in situ solvothermal synthesis. Then EP was added for curing,and antibacterial and transparent EP/nano-TiO2 composite was prepared. X-ray diffraction spectra confirmed that TiO2 nanoparticles were successfully generated in-situ in EP matrix,and its mechanism was studied. It was observed by scanning electron microscope and transmission electron microscopy that TiO2 nanoparticles could disperse well in EP matrix. EP/nano-TiO2 composites containing only 1.4% TiO2 had an antibacterial rate of 100% on both escherichia coli and staphylococcus aureus,which was 2.6 and 2.8 times higher than those of pure EP. In addition,the bending strength reached 87.25 MPa,which was increased by 108%. Nano-TiO2 could effectively promote the curing process of EP,with little effect on the glass transition temperature of EP.

关 键 词：环氧树脂 纳米二氧化钛 原位制备 溶剂热法 抗菌 

分 类 号：TQ322.41[化学工程—合成树脂塑料工业]