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为了研究改性石墨烯(MGN)对高密度聚乙烯(HDPE)结晶行为的影响,采用化学氧化还原法制备出石墨烯(GN)和MGN,并用熔融共混法制备出GN/HDPE和MGN/HDPE复合材料。采用红外光谱仪和差示扫描量热仪对GN和MGN的结构及复合材料的结晶行为做了测试,并用莫氏方程对复合材料进行了非等温结晶动力学研究。红外光谱结果表明硬脂酸分子已成功接枝在GN上;差示扫描热分析结果表明MGN对HDPE结晶行为的抑制程度比GN更明显。
In order to study the influence of modified graphene (MGN) on the crystallization behavior of high density polyethylene (HDPE), graphene (GN) and MGN were prepared by chemical redox method. GN / HDPE and MGN / HDPE composite materials. The structure of GN and MGN and the crystallization behavior of the composites were tested by infrared spectroscopy and differential scanning calorimetry. The non-isothermal crystallization kinetics of the composites was investigated by using the Morse equation. The results of FTIR showed that stearic acid molecules were successfully grafted on GN. The results of differential scanning calorimetry showed that MGN inhibited the crystallization of HDPE much more than GN.