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首页> 外文期刊>Polymers for advanced technologies >Polymer/carbon nanofillers films fabricated by latex technology
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Polymer/carbon nanofillers films fabricated by latex technology

机译：乳胶技术制造的聚合物/碳纳米填料薄膜

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摘要

This research presents a generic fabrication method for tailoring polymer/carbon nanofillers composites with controlled architecture and composition. Two types of common carbon nanofillers, i.e. multi-walled carbon nanotubes (MWNTs) and graphene nanosheets, are finely dispersed in an aqueous dispersion of polyacrylate followed by a microfiltration process. The second step allows preserving the high dispersion level of the nanofillers within the polymer matrix in the resulting solid films/layers. This study aims to investigate the structure-property relationship of the polyacrylateanofiller films, fabricated by the combination of latex technology and microfiltration. The polyacrylate/MWNTs system is studied over the entire MWNTs composition (0 to 100wt%) and is shown to exhibit a structural transition; from a nanocomposite structure, in which the nanotubes are dispersed within a continuous polymermatrix, to a porous MWNTs macrostructure containing segregated polymer domains. This structural transition is corroborated with the films-specific surface area values and the mechanical properties versus the MWNTs content. The percolation threshold of the studied polyacrylate/MWNTs systems is obtained at MWNTs content of ～0.04wt%, an order of magnitude lower compared with cast films, fabricated by conventional latex technology. Polyacrylate/graphene nanosheet nanocomposites that are fabricated using the same method also demonstrate a structural transition from nanofiller/polymer composite material to graphene macrostructures.
机译：这项研究提出了一种通用的制造方法，用于定制具有受控结构和组成的聚合物/碳纳米填料复合材料。将两种常见的碳纳米填料，即多壁碳纳米管（MWNTs）和石墨烯纳米片，精细地分散在聚丙烯酸酯的水分散体中，然后进行微滤工艺。第二步骤允许在所得固体膜/层中的聚合物基质内保持纳米填料的高分散水平。本研究旨在研究通过乳胶技术和微滤技术相结合制备的聚丙烯酸酯/纳米粉膜的结构-性能关系。在整个MWNTs组成（0到100wt％）上研究了聚丙烯酸酯/ MWNTs系统，并显示出结构转变。从纳米复合结构（其中纳米管分散在连续的聚合物基质中）到包含分离的聚合物域的多孔MWNTs宏观结构。该结构转变与膜的比表面积值以及机械性能与MWNT含量的关系得到证实。所研究的聚丙烯酸酯/ MWNTs体系的渗透阈值是在MWNTs含量为〜0.04wt％时获得的，该值比使用常规胶乳技术制备的流延膜低一个数量级。使用相同方法制造的聚丙烯酸酯/石墨烯纳米片纳米复合材料还显示出从纳米填料/聚合物复合材料到石墨烯宏观结构的结构转变。

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