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首页> 外文期刊>ACS applied materials & interfaces >Bioinspired Graphene Oxide/Polymer Nanocomposite Paper with High Strength, Toughness, and Dielectric Constant
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Bioinspired Graphene Oxide/Polymer Nanocomposite Paper with High Strength, Toughness, and Dielectric Constant

机译：具有高强度，韧性和介电常数的生物启发氧化石墨烯/聚合物纳米复合纸

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摘要

Graphene/graphene oxide (GO)-based paper is attracting great interest owing to its multiple functionalities. In this study, we successfully synthesized a triblock copolymer by atom transfer radical polymerization method in terms of molecular design. The copolymer was comprised of polydimethylsiloxane (PDMS) and poly(glycidyl methacrylate) (PGMA) segments. To the copolymer, the PDMS segments provided flexible characteristic, and the PGMA segments provided reactive groups and adhesiveness. Because of the above characteristics, the copolymer was used as an adhesive between the adjacent GO nanosheets for fabrication of GO/PDMS-PGMA papers. The papers showed a good combination of high tensile strength and toughness. The tensile strength and toughness of GO/PDMS-PGMA (85/15) paper reached as high as 309 MPa and 6.55 MJ.m(-3), which were 3.4 and 8.2 times higher than that of pure GO paper. Furthermore, the papers also had high dielectric constant, which may enable this kind of material to be used in electronic and engineering fields.
机译：基于石墨烯/氧化石墨烯（GO）的纸由于其多种功能而引起了极大的兴趣。在这项研究中，我们成功地通过分子转移自由基聚合方法合成了三嵌段共聚物。该共聚物由聚二甲基硅氧烷（PDMS）和聚（甲基丙烯酸缩水甘油酯）（PGMA）链段组成。对于该共聚物，PDMS链段提供了挠性，而PGMA链段提供了反应性基团和粘合性。由于上述特性，该共聚物被用作制造GO / PDMS-PGMA纸的相邻GO纳米片之间的粘合剂。这些纸显示出高拉伸强度和韧性的良好组合。 GO / PDMS-PGMA（85/15）纸的拉伸强度和韧性分别高达309 MPa和6.55 MJ.m（-3），分别是纯GO纸的3.4和8.2倍。此外，这些纸还具有高介电常数，这可以使这种材料用于电子和工程领域。

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