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The Relationship between the Specific Surface Area of a Nanofiller and the Elastic Modulus for Polymer/Graphene Nanocomposites
Protection of Metals and Physical Chemistry of Surfaces ( IF 1.1 ) Pub Date : 2020-08-03 , DOI: 10.1134/s2070205120030211
G. V. Kozlov , I. V. Dolbin

Abstract

The relationship between the effective (real) specific surface area of the nanofiller and the elastic modulus for polymer/graphene nanocomposites is studied. The process of aggregation of a graphene 2D nanofiller (the formation of its tactoids) leads to a decrease in its effective specific surface area, since the surface of graphene plates inside the tactoid, which does not interact with the polymer matrix, does not affect the formation of the properties of nanocomposites. This effect is realized only above the percolation threshold of the nanofiller. An interpretation is proposed that allows estimating the number of graphene plates in one tactoid. Further calculations allow the determination of the effective specific surface area of the nanofiller and the degree of reinforcement of the nanocomposite.


中文翻译:

纳米填料的比表面积与聚合物/石墨烯纳米复合材料的弹性模量之间的关系

摘要

研究了纳米填料的有效(实际)比表面积与聚合物/石墨烯纳米复合材料的弹性模量之间的关系。石墨烯2D纳米填料的聚集过程(其触觉物的形成)导致其有效比表面积的减小,这是因为触觉物内部的石墨烯板表面不与聚合物基体相互作用,不会影响聚合物的有效比表面积。纳米复合材料性能的形成。仅在纳米填料的渗透阈值以上才能实现此效果。提出了一种解释,该解释允许估计一个触觉体中石墨烯板的数量。进一步的计算允许确定纳米填料的有效比表面积和纳米复合材料的增强程度。
更新日期:2020-08-03
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