Sodium alginate/graphene oxide composite films with enhanced thermal and mechanical properties

被引：335
|
作者：
Ionita, Mariana [1 ]
Pandele, Madalina Andreea [1 ]
Iovu, Horia [1 ]
机构：
[1] Univ Politehn Bucuresti, Adv Polymer Mat Grp, Bucharest 010737, Romania
来源：
CARBOHYDRATE POLYMERS | 2013年 / 94卷 / 01期
关键词：
Sodium alginate; Graphene oxide; Film; Mechanical properties; GRAPHENE OXIDE; ALGINATE HYDROGELS; NANOCOMPOSITES; FABRICATION; SHEETS; ACID; GEL;
D O I：
10.1016/j.carbpol.2013.01.065
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Sodium alginate/graphene oxide (Al/GO) nanocomposite films with different loading levels of graphene oxide were prepared by casting from a suspension of the two components. The structure, morphologies and properties of Al/GO films were characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning (SEM) and transmission electron microscopy (TEM), thermal gravimetric (TG) analysis, and tensile tests. The results revealed that hydrogen bonding and high interfacial adhesion between GO filler and Al matrix significantly changed thermal stability and mechanical properties of the nanocomposite films. The tensile strength (sigma) and Young's modulus (E) of Al films containing 6 wt% GO increased from 71 MPa and 0.85 GPa to 113 MPa and 4.18 GPa, respectively. In addition, TG analysis showed that the thermal stability of Al/GO composite films was better than that of neat Al film. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：339 / 344
页数：6
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