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Well Dispersion of rGOs in PLLA Matrix Mediated by Incorporation of EVA and its Resultant Electrical property

机译:EVA掺入介导的PLGO基质中rGO的阱分散及其电学性质

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摘要

In this work, a new method was introduced to improve the dispersion of the reduced graphene oxides (rGOs) in polymer host, and the corresponding electrical properties of the composites were discussed. The method was related to incorporation of the third component ethylene-co-vinyl acetate (EVA) into the poly(L-lactide) (PLLA)/rGOs composites. Because of a better affinity of the rGOs to the EVA than the PLLA, rGOs were attracted to adsorb on the EVA particles. Consequently, homogeneous dispersion of the EVA particles directed a better dispersion of the rGOs in polymer host. In this case, compared with the PLLA/rGOs binary composite, the ternary composite showed a 10 orders decrease of electrical resistance with a lower electrical percolation threshold than that of the binary composite. This work opens up a viable strategy to the melt blending of polymer/graphene composites with good dispersion and markedly improved properties.
机译:在这项工作中,引入了一种新方法来改善还原石墨烯氧化物(rGOs)在聚合物主体中的分散性,并讨论了复合材料的相应电性能。该方法与将第三组分乙烯-乙酸乙烯酯共聚物(EVA)掺入聚(L-丙交酯)(PLLA)/ rGOs复合材料中有关。由于rGO对EVA的亲和力比PLLA好,因此rGO被吸引以吸附在EVA颗粒上。因此,EVA颗粒的均匀分散导致rGO在聚合物主体中的更好分散。在这种情况下,与PLLA / rGOs二元复合材料相比,三元复合材料的电阻降低了10个数量级,而电渗流阈值却比二元复合材料低。这项工作为具有良好分散性和显着改善的性能的聚合物/石墨烯复合材料的熔融共混开辟了可行的策略。

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