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首页> 外文期刊>Journal of Applied Polymer Science >Effect of graphene loading on thermomechanical properties of poly(vinyl alcohol)/starch blend
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Effect of graphene loading on thermomechanical properties of poly(vinyl alcohol)/starch blend

机译：石墨烯负载量对聚乙烯醇/淀粉共混物热机械性能的影响

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摘要

Polymer nanocomposites based on poly(vinyl alcohol) (PVA)/starch blend and graphene were prepared by solution mixing and casting. Glycerol was used as a plasticizer and added in the starch dispersion. The uniform dispersion of graphene in water was achieved by using an Ultrasonicator Probe. The composites were characterized by FTIR, tensile properties, X-ray diffraction (XRD), thermal analysis, and FE-SEM studies. FTIR studies indicated probable hydrogen bonding interaction between the oxygen containing groups on graphene surface and the OH groups in PVA and starch. Mechanical properties results showed that the optimum loading of graphene was 0.5 wt % in the blend. XRD studies indicated uniform dispersion of graphene in PVA/starch matrix upto 0.5 wt % loadings and further increase caused agglomeration. Thermal studies showed that the thermal stability of PVA increased and the crystallinity decreased in the presence of starch and graphene. FE-SEM studies showed that incorporation of graphene increased the ductility of the composites. 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41827.
机译：通过溶液混合和流延制备基于聚乙烯醇（PVA）/淀粉共混物和石墨烯的聚合物纳米复合材料。甘油用作增塑剂，并添加到淀粉分散体中。石墨烯在水中的均匀分散是通过使用超声波探头实现的。通过FTIR，拉伸性能，X射线衍射（XRD），热分析和FE-SEM研究对复合材料进行了表征。 FTIR研究表明，石墨烯表面的含氧基团与PVA和淀粉中的OH基团之间可能存在氢键相互作用。力学性能结果表明，共混物中石墨烯的最佳负载量为0.5 wt％。 XRD研究表明，石墨烯在PVA /淀粉基质中的均匀分散度高达0.5 wt％，并进一步导致了团聚。热学研究表明，在存在淀粉和石墨烯的情况下，PVA的热稳定性提高，结晶度降低。 FE-SEM研究表明，掺入石墨烯可提高复合材料的延展性。 2015年Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41827。

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