Using Graphene Oxide to Enhance the Barrier Properties of Poly(lactic acid) Film |
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| Authors: | Ling‐Ling Wu Jia‐jun Wang Xia He Tao Zhang Hui Sun |
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| Affiliation: | 1. Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Zhejiang Sci‐Tech University, Ministry of Education, , Hangzhou, 310018 P. R. China;2. College of Materials and Textiles, Zhejiang Sci‐Tech University, , Hangzhou, 310018 PR China;3. Department of Packaging Engineering, College of Materials and Textiles, Zhejiang Sci‐Tech University, , Hangzhou, 310018 PR China |
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| Abstract: | The ultra‐thin (polyethyleneimine/graphene oxide)n [(PEI/GO)n]multilayer films on poly(lactic acid) (PLA) were constructed via the layer‐by‐layer assembly. Here, the electrostatic interactions between PEI and GO were used to obtain the nanoscale composite membrane of (PEI/GO)n on the surface of PLA film. With the number of assembling layers increased, the oxygen permeability (PO2) of PLA film decreased substantially. As a 0.06 wt% GO solution was used with only four layers, the PO2 decreased from 53.8 to 0.377 × 10?4 cm3/m2/d/Pa, only 0.7% of the original PLA film. At the same time, the coated PLA film also presented a good transparency and better mechanical properties. It is a novel way to use GO on biodegradable packaging materials. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | poly(lactic acid) graphene oxide layer‐by‐layer assembly oxygen permeability |
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