Centre for Advanced Macromolecular Design (CAMD), School of Chemical Engineering , University of New South Wales , Sydney , New South Wales 2052 , Australia.
Mark Wainwright Analytical Centre , University of New South Wales , Sydney , New South Wales 2052 , Australia.
ACS Appl Mater Interfaces. 2019 Dec 26;11(51):48450-48458. doi: 10.1021/acsami.9b19183. Epub 2019 Dec 10.
Electrically conductive polymer/rGO (reduced graphene oxide) films based on styrene and -butyl acrylate are prepared by a variety of aqueous latex based routes involving ambient temperature film formation. Techniques based on miniemulsion polymerization using GO as surfactant and "physical mixing" approaches (i.e., mixing an aqueous polymer latex with an aqueous GO dispersion) are employed, followed by heat treatment of the films to convert GO to rGO. The distribution of GO sheets and the electrical conductivity depend strongly on the preparation method, with electrical conductivities in the range 9 × 10 to 3.4 × 10 S/m. Higher electrical conductivities are obtained using physical mixing compared to miniemulsion polymerization, which is attributed to the former providing a higher level of self-alignment of rGO into larger linear domains. The present results illustrate how the distribution of GO sheets within these hybrid materials can to some extent be controlled by judicious choice of preparation method, thereby providing an attractive means of nanoengineering for specific potential applications.
基于苯乙烯和 - 丁基丙烯酸酯的导电聚合物/rGO（还原氧化石墨烯）薄膜通过各种基于水性乳液的途径制备，涉及环境温度成膜。使用 GO 作为表面活性剂的 miniemulsion 聚合技术和“物理混合”方法（即混合水性聚合物乳液与水性 GO 分散体）被采用，然后对薄膜进行热处理以将 GO 转化为 rGO。GO 片的分布和电导率强烈依赖于制备方法，电导率在 9×10 到 3.4×10 S/m 的范围内。与 miniemulsion 聚合相比，物理混合得到了更高的电导率，这归因于前者提供了 rGO 更高水平的自对准到更大的线性畴。这些结果表明，通过明智地选择制备方法，在这些混合材料中 GO 片的分布在某种程度上可以得到控制，从而为特定的潜在应用提供了有吸引力的纳米工程手段。
