Properties and characterization of bionanocomposite films prepared with various biopolymers and ZnO nanoparticles

Paulraj Kanmani, Jong Whan Rhim

    Research output: Contribution to journalArticlepeer-review

    222 Citations (Scopus)

    Abstract

    This study was aimed to develop biopolymer based antimicrobial films for active food packaging and to reduce environmental pollution caused by accumulation of synthetic packaging. The ZnO NPs were incorporated as antimicrobials into different biopolymers such as agar, carrageenan and CMC. Solvent casting method was performed to prepare active nanocomposite films. Methods such as FE-SEM, FT-IR and XRD were used to characterize resulting films. Physical, mechanical, thermal and antimicrobial properties were also examined. Remarkable surface morphological differences were observed between control and nanocomposite films. The crystallinity of ZnO was confirmed by XRD analysis. The addition of ZnO NPs increased color, UV barrier, moisture content, hydrophobicity, elongation and thermal stability of the films, while decreased WVP, tensile strength and elastic modulus. ZnO NPs impregnated films inhibited growth of L. monocytogenes and E. coli. So these newly prepared nanocomposite films can be used as active packaging film to extend shelf-life of food.

    Original languageEnglish
    Pages (from-to)190-199
    Number of pages10
    JournalCarbohydrate Polymers
    Volume106
    Issue number1
    DOIs
    Publication statusPublished - 2014 Jun 15

    Keywords

    • Active food packaging
    • Antimicrobial activity
    • Biopolymers
    • Nanocomposite
    • ZnO nanoparticles

    ASJC Scopus subject areas

    • Organic Chemistry
    • Polymers and Plastics
    • Materials Chemistry

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