Biodegradable graphene oxide nanosheets/poly-(butylene adipate-coterephthalate) nanocomposite film with enhanced gas and water vapor barrier properties
Biodegradable graphene oxide nanosheets/poly-(butylene adipate-coterephthalate) nanocomposite film with enhanced gas and water vapor barrier properties
复制标题
具有增强气体和水蒸气阻隔性能的可生物降解氧化石墨烯纳米片/聚己二酸-对苯二甲酸丁二醇酯纳米复合薄膜
DOI：
10.1016/j.polymertesting.2016.12.022
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发表时间：
2017-04-01
期刊：
影响因子：
5.1
通讯作者：
Xu, Ling
中科院分区：
文献类型：
--
作者：
Ren, Peng-Gang;Liu, Xiao-Hui;Xu, Ling
聚己二酸丁二醇酯-对苯二甲酸丁二醇酯（PBAT）以其良好的生物降解性、优异的延展性、良好的加工性能和良好的最终性能而受到广泛关注，但其阻隔性能不足限制了其在包装领域的应用。在本工作中，通过引入极少量的氧化石墨烯纳米片（GONS），PBAT膜的阻隔性能得到改善。当GONS负载量为0.35vol%时，O-2和水蒸气渗透系数分别降低了70%和36%以上。结果表明，GUNS具有优异的抗渗性和良好的分散性，且与PBAT基体之间具有较强的界面结合力，从而提高了复合材料的阻隔性能。此外，与纯PBAT相比，GONS/PBAT纳米复合材料的拉伸强度和杨氏模量分别从纯PBAT的24.6 MPa和58.5 MPa提高到27.8 MPa和72.2 MPa，力学性能显著提高。GONS的加入也赋予PBAT基体优异的热稳定性。这些发现为大规模制备高阻隔薄膜提供了重要指导。(C)2016爱思唯尔有限公司版权所有
Poly-(butylene adipate-co-terephthalate) (PBAT) has captured significant interest by dint of its biodegradability, superb ductility, promising processing properties and good final properties, but the insufficient barrier performance limits its application, especially in packaging field. In the present work, improved barrier properties of PBAT films were obtained by introducing an extremely low amount of graphene oxide nanosheets (GONS). O-2 and water vapor permeability coefficients were decreased by more than 70% and 36% at the GONS loading of 0.35 vol%, respectively. The enhanced barrier performance was ascribed to the outstanding impermeability and well dispersion of GUNS as well as the strong interfacial adhesion between GONS and PBAT matrix. Furthermore, tensile strength and Young's modulus of GONS/PBAT nanocomposite rise up to 27.8 MPa and 72.2 MPa from 24.6 MPa to 58.5 MPa of neat PBAT, respectively, showing a prominent increase of mechanical properties compared to neat PBAT. The incorporation of GONS also endowed PBAT matrix with an excellent thermal stability. These findings provide a significant guidance for fabricating high barrier films on a large scale. (C) 2016 Elsevier Ltd. All rights reserved.