School of Chemistry and Chemical Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China.
ACS Appl Mater Interfaces. 2016 Nov 16;8(45):31264-31272. doi: 10.1021/acsami.6b08606. Epub 2016 Nov 4.
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, 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.
基于石墨烯/氧化石墨烯（GO）的纸张由于其多功能性而引起了极大的关注。在这项研究中，我们根据分子设计，成功地通过原子转移自由基聚合方法合成了一种三嵌段共聚物。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）段组成。对于该共聚物，PDMS 段提供了柔性特征，PGMA 段提供了反应性基团和粘附性。由于上述特性，该共聚物被用作相邻 GO 纳米片之间的粘合剂，用于制造 GO/PDMS-PGMA 纸。该纸表现出高拉伸强度和韧性的良好结合。GO/PDMS-PGMA（85/15）纸的拉伸强度和韧性高达 309 MPa 和 6.55 MJ·m，分别比纯 GO 纸高 3.4 倍和 8.2 倍。此外，这些纸张还具有高介电常数，这可能使这种材料能够用于电子和工程领域。
