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首页> 外文期刊>Polymers for advanced technologies >Synergistic effect of graphene oxide nanoplatelets and cellulose nanofibers on mechanical, thermal, and barrier properties of thermoplastic starch
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Synergistic effect of graphene oxide nanoplatelets and cellulose nanofibers on mechanical, thermal, and barrier properties of thermoplastic starch

机译：石墨烯氧化物纳米粒子和纤维素纳米纤维对热塑性淀粉机械，热和阻隔性能的协同作用

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摘要

>In recent years, because of the limited availability of oil resources and the increasing concerns regarding environment protection, much attention has been drawn to produce packaging films based on degradable biopolymers instead of synthetic polymers. On the other hand, because of the high costs of oil extraction, raw materials and film production, and disposing of the waste products of synthetic films, the need to replace these films with less pollutant and more cost‐effective films is growing globally. In this study, to answer the need for replacing synthetic polymer films, nanocomposite films based on thermoplastic starch reinforced with cellulose nanofibers and graphene oxide nanoplatelets were produced and characterized. The results implied that the synergistic effect of cellulose nanofibers and graphene oxide nanoplatelets has played an important role in improving the mechanical properties of the films. The results showed that with the addition of cellulose nanofibers and graphene oxide nanoplatelets, the tensile strength and elastic modulus of starch film were increased from 3 and 32 MPa to 13 and 436 MPa, which corresponds to 438% and 1435% improvement, respectively. In addition, the oxygen permeability resistance and the water vapor transmission for samples containing 3 wt% of graphene oxide nanoplatelets was decreased by 78% and 30% compared with the thermoplastic starch film, respectively. The permeability coefficient of the samples containing 3 wt% graphene oxide nanoplatelets for oxygen, nitrogen, and carbon dioxide have proved to be 0.051, 0.054, and 0.047 barrer, which shows that these films can perform well as packaging films.
机译：

近年来，由于石油资源的可用性有限和有关环境保护的越来越多的问题，已经绘制了很多关注，以生产基于可降解的生物聚合物代替合成聚合物的包装薄膜。另一方面，由于石油提取的高成本，原料和薄膜生产，以及处理合成薄膜的废物，需要更换这些薄膜的污染物较少，更具成本效益在全球增长。在该研究中，为了回答替代合成聚合物膜的需要，产生了基于用纤维素纳米纤维增强的热塑性淀粉和石墨烯氧化物纳米片的纳米复合膜并表征。结果暗示纤维素纳米纤维和氧化铟烯纳米薄层的协同作用在改善薄膜的力学性质方面发挥了重要作用。结果表明，随着添加纤维素纳米纤维和石墨烯氧化物纳米键，淀粉膜的拉伸强度和弹性模量从3和32MPa增加到32MPa至436MPa，其分别对应于438％和1435％的改善。另外，与热塑性淀粉膜相比，含有3wt％的含有3wt％的石墨烯纳米片的样品的氧气渗透性和水蒸气速率降低78％和30％。已证明含有3wt％石墨烯氧化物纳米孔的样品的渗透率系数已被证明是0.051,0.054和0.047个禁区，表明这些薄膜可以作为包装薄膜表现良好。

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