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首页> 外文期刊>Journal of Applied Polymer Science >Antibacterial poly(lactic acid) (PLA) films grafted with electrospun PLA/allyl isothiocyanate fibers for food packaging
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Antibacterial poly(lactic acid) (PLA) films grafted with electrospun PLA/allyl isothiocyanate fibers for food packaging

机译：静电纺丝PLA /烯丙基异硫氰酸酯纤维接枝的抗菌聚乳酸（PLA）薄膜，用于食品包装

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Poly(lactic acid) (PLA) fibers of submicron sizes encapsulating allyl isothiocyanate (AITC) (PfA) 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 (PfA-g-film) retain the mechanical properties of PLA. The release of AITC from the fibers was temperature dependent. At temperatures lower than 4 degrees 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. PfA-g-films significantly inhibited the growth of Listeria innocua and Escherichia coli k12 when tested on package foods. (C) 2015 Wiley Periodicals, Inc.
机译：制备了亚微米尺寸的封装异硫氰酸烯丙酯（AITC）（PfA）的聚乳酸（PLA）纤维，并将其静电纺丝到PLA膜的表面。 SEM检查证实了两相的融合，形成了双层纤维接枝膜，然后对该膜进行吹气和水洗以除去未接枝的纤维。纤维接枝的PLA膜（PfA-g膜）保留了PLA的机械性能。 AITC从纤维中的释放取决于温度。在低于4摄氏度的温度下，掺入的AITC保留在纤维内而不会失去活性。在室温下，AITC在数周内持续释放。 AITC的释放还取决于其在PLA电纺丝溶液中的初始浓度。掺入更多AITC的样品显示出更高的释放速率。在包装食品上进行测试时，PfA-g膜可显着抑制无毒李斯特菌和大肠杆菌k12的生长。 （C）2015威利期刊公司

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