期刊
APPLIED CLAY SCIENCE
卷 111, 期 -, 页码 10-20出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clay.2015.03.024
关键词
Halloysite nanotubes; ZnO; Poly (lactic acid); Mechanical properties; Antimicrobial activity
资金
- Monash University Malaysia
- Ministry of Higher Education, Malaysia under FRGS [FRGS/2/2013/TK04/MUSM/03/1]
A new approach to enhance the antimicrobial properties of poly (lactic acid) (PLA) packaging films while retaining their thermo-mechanical properties was examined. Herein, ZnO nanoparticles were deposited on the outer and inner surfaces of halloysite nanotubes (Hal) using a novel solvothermal method and these ZnO deposited Hal (ZnO-Hal) were incorporated into the PLA matrix as a reinforcing filler. PLA nanocomposite films were fabricated using the solution casting method with different filler loadings (0-10 mass%). PLA nanocomposite films with ZnO had inferior mechanical properties while PLA films with ZnO-Hal showed significant improvements, where tensile strength and modulus increased by 30% and 65% with the addition of 5 mass%, respectively. Antimicrobial tests revealed that ZnO-Hal can act as a promising antimicrobial agent against bacteria such as Escherichia call and Staphylococcus aureus where the bacteria count reduced by more than 99%. (C) 2015 Elsevier B.V. All rights reserved.
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