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Improved mechanical and barrier properties of starch film with reduced graphene oxide modified by SDBS

机译:通过SDBS改性氧化石墨烯氧化物的淀粉膜的机械和阻隔性能改善

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Starch is regarded as one of the most promising biopolymers to replace the fossil resources. However, due to the poor mechanical properties, high sensitivity to humidity, and low barrier property, the development of starch-based materials has been limited. In this study, they improved the mechanical and barrier properties of starch film with reduced graphene oxide (RGO) modified by sodium dodecyl benzene sulfonate (SDBS). The hydrophilia of modified RGO (r-RGO) was improved and result in a good dispersion in oxidized starch (OS) matrix. The tensile strength of the r-RGO-4/OS film increased to 58.5 MPa which was more than three times of the OS film (17.2 MPa). Besides, both the water vapor and oxygen barrier properties of r-RGO/OS film were improved greatly compared with OS and GO/OS films. Moreover, the r-RGO/OS film could protect against UV light effectively due to its lightproof performance. In conclusion, the r-RGO/OS composite film has great potential applications in packaging industry. (C) 2017 Wiley Periodicals, Inc.
机译:淀粉被认为是最有前途的生物聚合物,以取代化石资源之一。然而,由于差的机械性能,高灵敏度对湿度和低阻隔性,淀粉基材料的发展受到了限制。在这项研究中,他们改善的淀粉膜的机械性质和阻挡性质与还原的石墨烯氧化物(RGO)由十二烷基苯磺酸钠(SDBS)改性。改性RGO(R-RGO)的亲水性得到改善,导致在氧化淀粉(OS)基体中的良好分散。的r RGO-4 / OS膜的拉伸强度提高至58.5兆帕,其是OS膜(17.2兆帕)的三倍以上。此外,无论是水蒸汽和r-RGO / OS膜的氧气阻隔性能,用OS和GO / OS膜相比大大提高。此外,R-RGO / OS膜可以防止有效UV光由于其透光性能。总之,R-RGO / OS复合薄膜包装行业巨大的应用潜力。 (c)2017 Wiley期刊,Inc。

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