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Antibacterial poly(lactic acid) (PLA) films grafted with electrospun PLA/allyl isothiocyanate fibers for food packaging
Author(s) -
Kara Hasan H.,
Xiao Fugang,
Sarker Majher,
Jin Tony Z.,
Sousa Ana M. M.,
Liu ChengKung,
Tomasula Peggy M.,
Liu LinShu
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42475
Subject(s) - allyl isothiocyanate , electrospinning , lactic acid , materials science , fiber , chemical engineering , polymer chemistry , nuclear chemistry , composite material , chemistry , organic chemistry , polymer , bacteria , biology , engineering , genetics
Poly(lactic acid) (PLA) fibers of submicron sizes encapsulating allyl isothiocyanate (AITC) (P f A) were made and electrospun onto the surfaces of PLA films. SEM examination confirmed the fusion of the two phases to form a bilayered fiber‐grafted film after the film underwent air blowing and water washing to remove the nongrafted fibers. The fiber‐grafted PLA films (P f A‐ g ‐film) retain the mechanical properties of PLA. The release of AITC from the fibers was temperature dependent. At temperatures lower than 4°C, the incorporated AITC remained within the fibers without losing activity; at room temperature, AITC released in a sustained manner over weeks. The release of AITC was also dependent on its initial concentration in the PLA electrospinning solution; samples with more AITC incorporated showed a higher release rate. P f A‐ g ‐films significantly inhibited the growth of Listeria innocua and Escherichia coli k12 when tested on package foods. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 42475.