抗菌母料中Nano-ZnO/CCA配比对PLA/AMB/TBC纳米复合材料性能的影响  

Influence of Nano-ZnO/CCA Ratios in Antibacterial Masterbatch on the Properties of PLA/AMB/TBC Nanocomposites

作　　者：樊卫华[1,2] 赵月[2] 章蔼静[2] 刘玉坤[2] 郭凯[2] 陈金周[2] 

机构地区：[1]郑州大学护理学院,郑州450001 [2]郑州大学材料科学与工程学院,郑州450001

出　　处：《工程塑料应用》2014年第9期30-33,共4页Engineering Plastics Application

摘　　要：以聚乳酸(PLA)为基体树脂,nano-ZnO和叶绿素酮酸(CCA)为复合抗菌剂,通过溶液共混制得抗菌母料(AMB),用PLA与AMB、柠檬酸三丁酯(TBC)热机械共混制得PLA/AMB/TBC纳米复合材料。研究了母料中nano-ZnO/CCA质量配比对纳米复合材料抗菌性能和力学性能的影响。结果表明,少量CCA的加入使纳米复合材料对大肠杆菌的抗菌性能大幅度提高;当纳米复合材料中TBC和nano-ZnO质量分数分别为10%和0.9%,AMB中nano-ZnO/CCA质量配比为18/8时,纳米复合材料的抗菌性能最好,其抗菌率达到99.6%,断裂伸长率是纯PLA的2.17倍,拉伸强度、弯曲强度和冲击强度保留率分别为75%,65%,70%。Antibacterial masterbatch （AMB） was prepared by solution blending with PLA as matrix,nano-ZnO and CCA as complex antibacterial agents. The PLA/AMB/TBC nanocomposites were achieved by thermal mechanical blending with PLA, AMB and TBC. The effects of mass ratio of nano-ZnO/CCA to the antibacterial effects and the mechanical properties of the nanocomposites were researched. The results indicate that sharp increase of the antibacterial effects against E coli is observed after adding a small amount of CCA . When the mass ratio of nano-ZnO/CCA in AMB is 18/8 and the nano-ZnO content is 0.9%,the best antibacterial effects are obtained：the antibacterial rate against E coli of the nanocomposite is proved to 99.6%,the rupture elongation is highest and its value is 2.17 times of pure PLA,the retention rates of the tensile strength,bending strength and impact strength are 75%,65%,70%respectively.

关 键 词：聚乳酸 叶绿素酮酸 抗菌性能 力学性能 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]