Antibacterial Nanocomposite of Poly(Lactic Acid) and ZnO Nanoparticles Stabilized with Poly(Vinyl Alcohol): Thermal and Morphological Characterization

被引：17
|
作者：
Restrepo, I [1 ]
Flores, P. [1 ,2 ]
Rodriguez-Llamazares, S. [3 ]
机构：
[1] Univ Concepcion, Mat Engn Dept, Concepcion, Chile
[2] Univ Concepcion, Mech Engn Dept, Concepcion, Chile
[3] Ctr Invest Polimeros Avanzados, Edificio Lab CIPA, Concepcion, Chile
来源：
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS | 2019年 / 58卷 / 01期
关键词：
Antibacterial activity; melt blending; polylactic acid; polymer nanocomposites; ZnO nanoparticles; PLA; CRYSTALLIZATION; BEHAVIOR; FILMS;
D O I：
10.1080/03602559.2018.1466168
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The effect of polyvinyl alcohol (PVA) as a surface coating agent on the antibacterial and thermal properties of polylactic acid (PLA)/ZnO nanocomposites prepared by melt blending was investigated. The ZnO nanoparticles were coated and stabilized with PVA using a solvothermal method. Nanocomposites were prepared with different ZnO nanoparticle content: 1, 3 and 5 wt.%. Electron transmission microscopy and Fourier transform infrared spectroscopy showed the presence of a layer around the nanoparticles and the interaction between nanoparticles and PVA, respectively. DSC analysis revealed that the thermal properties of the nanocomposites were not affected by the coating of ZnO nanoparticles with PVA. The PLA/ZnO nanocomposites with coated nanoparticles presented better antibacterial activity than those containing uncoated nanoparticles. [GRAPHICS] .
引用
收藏
页码：105 / 112
页数：8
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