Polysaccharide Nanocomposites Reinforced with Graphene Oxide and Keratin-Grafted Graphene Oxide
Polysaccharide Nanocomposites Reinforced with Graphene Oxide and Keratin-Grafted Graphene Oxide
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DOI：
10.1021/ie200742x
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发表时间：
2012-02
影响因子：
4.2
通讯作者：
C. Rodriguez‐Gonzalez;A. Martínez-Hernández;V. Castaño;O. Kharissova;R. Ruoff;C. Velasco‐Santos
中科院分区：
文献类型：
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作者：
C. Rodriguez‐Gonzalez;A. Martínez-Hernández;V. Castaño;O. Kharissova;R. Ruoff;C. Velasco‐Santos
开发了多糖基质、壳聚糖-淀粉和羧甲基纤维素-淀粉与氧化石墨烯和接枝有角蛋白的石墨烯增强的纳米复合材料。采用流延/溶剂蒸发法制备了复合薄膜。通过傅里叶变换红外光谱（FTIR）、拉曼光谱和扫描电子显微镜（SEM）分析了石墨烯材料在生物聚合物基体中的相互作用和分布，并通过动态力学分析研究了其热机械性能。壳聚糖-淀粉基质的纳米复合材料相对于没有增强的膜显著改善了它们的机械性能，在仅0.5重量%的氧化石墨烯的情况下获得了储能模量（E′，35 ℃）的929%的增加，并且当掺入角蛋白接枝的氧化石墨烯（0.1重量%）时，在150和200 ℃下获得了E′的显著增加。相比之下，氧化石墨烯掺入羧甲基纤维素-淀粉基质中往往会降低…
Nanocomposites of polysaccharide matrices, chitosan–starch, and carboxymethyl cellulose-starch reinforced with graphene oxide and graphene grafted with keratin were developed. Composites films had been prepared for the casting/solvent evaporation method. The interaction and distribution of graphene materials in the biopolymer matrices were analyzed by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and scanning electron microscopy (SEM), and the thermomechanical properties were examined using dynamic mechanical analysis. The nanocomposites of the chitosan–starch matrix improved their mechanical properties substantially, with respect to the film without reinforcing, obtaining an increase of 929% in the storage modulus (E′, 35 °C) with only 0.5 wt % of graphene oxide and outstanding increments in E′ at 150 and 200 °C when keratin-grafted graphene oxide is incorporated (0.1 wt %). In contrast, the graphene oxide incorporated into the carboxymethyl cellulose–starch matrix tends to decrease...