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Preparation of functionalized graphene-linear low-density polyethylene composites by melt mixing method

机译：熔融混合法制备官能化石墨烯 - 线性低密度聚乙烯复合材料

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摘要

Graphene is attracting gigantic amount of scientific interest due to its excellent thermo-physical properties. Graphene integration improves the electrical and mechanical properties of polyethylene-based polymers. This paper is concerned with the comprehensive procedure of preparing, morphological characterization and thermal property evaluation of nanoparticle blended polymer composites. Polymer composites are intended to consecrate the thermal energy storage applications. Linear low-density polyethylene (LLDPE) is incorporated with functionalized graphene with different concentrations (1, 3 and 5%). The morphological study revealed compatibility of polymer composites, at lower concentrations (1-3%) it shows homogenous dispersion, but above threshold limit the particle distribution is non-homogenous with coarse surface structures. Higher concentration (5%) of nanoparticles emulsifies the molecules and generates micelles between themselves. The thermal conductivity of the polymer composite is significantly enhanced with the reduction of specific heat. At lower concentrations polymer exhibits homogeneous dispersion and the interfacial interaction is comparatively higher, optimal concentration (3%) of nanoparticle provides favorable results and hence polymer composites with ideal concentration can be utilized for thermal energy storage applications.
机译：由于其出色的热物理性质，石墨烯由于其优异的热物理性质而吸引了巨大的科学兴趣。石墨烯集成改善了聚乙烯基聚合物的电力和力学性能。本文涉及纳米粒子混合聚合物复合材料的制备，形态学表征和热性能评价的综合程序。聚合物复合材料旨在奉献热能储存应用。线性低密度聚乙烯（LLDPE）掺入具有不同浓度（1,3和5％）的官能化石墨烯。形态学研究揭示了聚合物复合材料的相容性，在较低浓度（1-3％）下，其表示均匀分散体，但上述阈值限制颗粒分布与粗表面结构是非均匀的。较高浓度（5％）纳米颗粒乳化分子并在本身之间产生胶束。随着特定热量的降低，聚合物复合物的导热率显着增强。在较低浓度的聚合物上表现出均匀的分散，界面相互作用相对较高，最佳浓度（3％）纳米颗粒提供有利的结果，因此具有理想浓度的聚合物复合材料可用于热能储存应用。

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