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首页> 外文期刊>Journal of Applied Polymer Science >Mechanically strong nanocomposite films based on highly filled carboxymethyl cellulose with graphene oxide
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Mechanically strong nanocomposite films based on highly filled carboxymethyl cellulose with graphene oxide

机译：机械强度高的纳米复合膜，基于高度填充的羧甲基纤维素和氧化石墨烯

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Biopolymer nanocomposite films were prepared by adding exfoliated graphene oxide nanosheets (GOn) into carboxymethyl cellulose (CMC) at low and high GOn loadings (0.4-7 wt %). As firstly evidenced by viscosity of film-forming solutions, microscopic observations and infrared spectroscopy measurements, it was found that the GOn form a three-dimensional network throughout strong interfacial interactions with CMC, confirming that the GOn were well dispersed within the CMC, even at high GOn content, owing to the presence of several multifunctional groups on both phases which ensured the high compatibility between them. The topography of as prepared films was characterized by atomic force microscopy measurements showing that the films have a smooth surface with a very low average roughness for all range of GOn contents. Furthermore, the thermal stability, glass transition temperature, and tensile properties of nanocomposite films were gradually increased with increasing of GOn contents. By adding 7 wt % GOn, 18% increases of thermal stability, 17% of glass transition temperature, 623% of Young's modulus, and 268% of tensile strength were achieved. This work produced structured CMC-based nanocomposite films containing low and high loadings of welldispersed GOn. The high performances of these films can be expected to have potential in biomaterials or packaging materials applications. (C) 2015 Wiley Periodicals, Inc.
机译：通过在低和高GOn负载量（0.4-7 wt％）下将片状氧化石墨烯纳米片（GOn）添加到羧甲基纤维素（CMC）中来制备生物聚合物纳米复合材料薄膜。最初由成膜溶液的粘度，显微观察和红外光谱测量所证明，发现GOn在与CMC的强烈界面相互作用中形成了三维网络，这证实了GOn甚至分散在CMC内也很好地分散由于两个相上均存在多个多功能基团，可确保它们之间的高度相容性，因此GOn含量较高。所制得的薄膜的形貌通过原子力显微镜测量来表征，表明该薄膜具有光滑的表面，并且在所有GOn含量范围内其平均粗糙度非常低。此外，随着GOn含量的增加，纳米复合膜的热稳定性，玻璃化转变温度和拉伸性能逐渐提高。通过添加7重量％的GOn，获得了18％的热稳定性，17％的玻璃化转变温度，623％的杨氏模量和268％的拉伸强度。这项工作生产了基于CMC的结构化纳米复合薄膜，其中包含低和高负载的良好分散的GOn。这些膜的高性能有望在生物材料或包装材料应用中具有潜力。 （C）2015年Wiley Periodicals，Inc.

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