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http://dx.doi.org/10.20909/kopast.2018.24.1.1

Designed of rPP/d2w®/ZnO Nanocomposite Flexible Film for Food Packaging and Characterization on Mechanical and Antimicrobial Properties  

Lee, Jin-kyoung (CPR S&T Co., Ltd.)
Gil, Bo-min (Department of Polymer Science and Engineering, Inha University)
Lee, Dong-jin (Department of Chemistry, Inha University)
Lee, Ik-mo (Department of Chemistry, Inha University)
Publication Information
KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY / v.24, no.1, 2018 , pp. 1-11 More about this Journal
Abstract
In this study, pro-oxidant($d2w^{(R)}$) and rPP/ZnO nanocomposite flexible films for food packaging were prepared, and their mechanical and antimicrobial properties were investigated. As a result, the carbonyl index and hydroxyl index increased with exposured time to heat and UV rays. Surface analysis showed that the addition of zinc oxide improved the dispersibility and compatibility of the polymer, so that the surface of the composite film was smooth and the zinc oxide particles were smaller than the compared film. And it kept the physical properties by heat and UV ray blocking effect, and it worked to reduce decomposition. In the antimicrobial activity test, the microbial reduction rate was 3 logs or more at the use concentration of zinc oxide. The tensile strength was increased and the elongation was decreased. Oxidative degradability of multi-layered film in UV exposured for 72 hours, the molecular weight of the film decreased by 75.6%, 1,294 g/mol Mn and 5,920 g/mol Mw. In the safety analysis of food packaging materials, we obtained that are in standard of polypropylene, a food contact material of domestic law.
Keywords
Pro-oxidant($d2w^{(R)}$); Antimicrobial; rPP(Propylene random terpolymer)/ZnO(Zinc oxide) nanocomposite; Heat and UV degradation; Multi-layered Flexible food packaging film;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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