The Effect of UV Aging on Antimicrobial and Mechanical Properties of PLA Films with Incorporated Zinc Oxide Nanoparticles

被引：35
|
作者：
Mizielinska, Malgorzata [1 ]
Kowalska, Urszula [1 ]
Jarosz, Michal [1 ]
Suminska, Patrycja [1 ]
Landercy, Nicolas [2 ]
Duquesne, Emmanuel [2 ]
机构：
[1] West Pomeranian Univ Technol Szczecin, Fac Food Sci & Fisheries, Ctr Bioimmobilisat & Innovat Packaging Mat, Janickiego 35, PL-71270 Szczecin, Poland
[2] Materianova, Ave Nicolas Copernic,1, B-7000 Mons, Belgium
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH | 2018年 / 15卷 / 04期
关键词：
ZnO nanoparticles; antibacterial; antimicrobial properties; mechanical properties; COATED ZNO PARTICLES; ANTIBACTERIAL ACTIVITY; SHELF-LIFE; NANO-ZNO; NANOCOMPOSITE; CHITOSAN; MORPHOLOGY; FABRICATION; ANTIFUNGAL; COATINGS;
D O I：
10.3390/ijerph15040794
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The aim of this study was to examine the influence of accelerated UV-aging on the activity against chosen microorganisms and the mechanical properties of poly-lactic acid (PLA) films enhanced with ZnO nanoparticles. The pure PLA films and tri-layered PLAZnO1%/PLA/PLAZnO1% films of 150 mu m thickness were extruded. The samples were treated with UV-A and Q-SUN irradiation. After irradiation the antimicrobial activity and mechanical properties of the films were analyzed. The results of the study demonstrated that PLA films did not inhibit the growth of Staphylococcus aureus, Bacillus cereus, Escherichia coli, Bacillus atrophaeus, and Candida albicans cells. PLA films with incorporated zinc oxide nanoparticles decreased the number of analyzed microorganisms. Accelerated UV aging had no negative effect on the activity of the film containing nano-ZnO against Gram-positive bacteria, but it influenced the activity against Gram-negative cells and C. albicans. Q-SUN irradiation decreased the antimicrobial effect of films with incorporated nanoparticles against B. cereus. UV-A and Q-UV irradiation did not influence the mechanical properties of PLA films containing incorporated ZnO nanoparticles.
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页数：15
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