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Title of Journal: J Polym Res

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Abbravation: Journal of Polymer Research

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Springer Netherlands

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DOI

10.1002/cpa.3160230506

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1572-8935

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Oxygen depletion properties of glucosegrafted pol

Authors: Li Cui Liping Xu FangChang Tsai Ping Zhu Tao Jiang Jentaut Yeh
Publish Date: 2010/11/24
Volume: 18, Issue: 6, Pages: 1301-1313
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Abstract

Oxygen scavenging plastic can react with oxygen that was trapped in the packaging materials or permeated into the packages and then extend the shelf life of food contained in packages Sodium ascorbate SA and modified iron MFe compounds were chosen as the main components of oxygen scavengers to prepare the oxygen scavenging LDPE plastics However the widely used hydrophobic LDPE packaging material will slow down the oxygen depletion rate of these oxygen scavenger compounds So glucose was used to modify the hydrophobic property of LDPE to improve the oxygen depletion properties of LDPE oxygen scavenging plastic The oxygen depletion efficiency of L95SAxMFey5 series samples improved initially as the weight ratios of SA/MFe increase and reached the best as the weight ratios of SA/MFe approach 7/3 After modifying LDPE with glucoses the oxygen depletion efficiency of each ML95SAxMFey5 specimen improved even better than that of the corresponding L95SAxMFey5 specimen with the same loading of oxygen scavenger compound wherein the oxygen depletion efficiency of ML95SAxMFey5 series specimens reached the best as the weight ratios of SA/MFe approach 1/9 In consistent with the oxygen depletion properties found in the previous section the peroxide values of modeled food samples tested in the airtight flask with L95SAxMFey5 and ML95SAxMFey5 series samples reduce consistently as their oxygen depletion properties improve In order to understand the interesting oxygen depletion properties of L95SAxMFey5 and ML95SAxMFey5 series samples Fourier transform infrared spectroscopy scanning electron microscope and energy dispersive Xrays analysis of these samples were performedThe authors would like to express their appreciation to the Department of Industrial Technology Ministry of Economic Affairs 95EC17A11S1057 96EC17A11S1057 and 97EC17A11S1057 and National Science Council NSC 972221E011 027 MY3 for support of this work

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