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首页> 外文期刊>Polymers research journal >Studies on Mechanical and Thermal Properties of Low Density Polyethylene/Titanium Dioxide Composites in Binary System and Ternary System: Effect of Graphene Oxide
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Studies on Mechanical and Thermal Properties of Low Density Polyethylene/Titanium Dioxide Composites in Binary System and Ternary System: Effect of Graphene Oxide

机译：二元体系和三元体系中低密度聚乙烯/二氧化钛复合材料的机械和热性能研究：氧化石墨烯的影响

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摘要

This study reports on a polymer composites which use low density polyethylene (LDPE) as polymer matrix, titanium dioxide (TiO2) and graphene oxide (GO) as fillers. The results between mechanical and thermal properties of binary system and ternary system composites are being compared with the effect of graphene oxide. The preparation of TiO2/GO fillers is done by physical mixing with ratio 1:1 of titanium dioxide and graphene oxide which was prepared using simplified Hummer's method. 5 wt% and 10 wt% of the fillers are then melt mixed with LDPE respectively at 160°C, rotor speed of 60rpm for 10 minutes using Brabender machine. The results confirmed that the incorporation of GO in ternary system showed improvement in tensile and flexural properties compared to binary system composites. For thermal behaviour, ternary system composites showed higher cyrstallinity in differential scanning calorimety (DSC) study than the binary composites, however ternary system composites has slightly decrease for the thermal stability in thermogravimetric analysis (TGA). The investigation on the tensile fractured surface using scanning electron microscope (SEM) showed better interfacial adhesion in ternary system compared to the binary system. Thus, results revealed that polymer composite based on ternary system displayed a remarkable enhancement in mechanical properties which make it a good candidate in food packaging application.
机译：这项研究报告了一种使用低密度聚乙烯（LDPE）作为聚合物基质，二氧化钛（TiO2）和氧化石墨烯（GO）作为填料的聚合物复合材料。将二元体系和三元体系复合材料的机械性能和热性能之间的结果与氧化石墨烯的效果进行了比较。 TiO2 / GO填料的制备是通过将二氧化钛和氧化石墨的比例为1：1进行物理混合来完成的，而二氧化钛和氧化石墨烯是使用简化的Hummer方法制备的。然后使用Brabender机器分别在160℃，60rpm的转子速度下将5wt％和10wt％的填料分别与LDPE熔融混合10分钟。结果证实，与二元体系复合材料相比，在三元体系中掺入GO显示出拉伸和挠曲性能的改善。对于热性能，三元体系复合材料在差示扫描量热法（DSC）研究中显示出更高的结晶度，但是在热重分析（TGA）中，三元体系复合材料的热稳定性略有下降。使用扫描电子显微镜（SEM）对拉伸断裂表面进行的研究表明，与二元体系相比，三元体系的界面粘合性更好。因此，结果表明，基于三元体系的聚合物复合材料的机械性能显着提高，使其成为食品包装应用的良好选择。

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