Abstract Poly(methyl methacrylate) (PMMA)-graphene emulsion was prepared via reversible addition-fragmentation chain-transfer (RAFT) polymerization using a hydrophilic macro-RAFT agent. In addition, the graphene was prepared using waste graphite from a metal smelting industry to reduce the cost of polymer composites and be more eco-friendly. The graphene oxide (GO) was synthesized via the Hummers method and the modified Hummers method (without using sodium nitrate) and then modified to reduced (r)GO using L-ascorbic acid as the reducing agent. Transmission electron microscopy and zeta potential analyses revealed the PMMA attached to the graphene surface with a good stability. Moreover, the PMMA-graphene composites as the fillers in natural rubber latex could improve the mechanical properties and electrical conductivity of the composite films.

中文翻译：

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RAFT 聚合制备的聚甲基丙烯酸甲酯-石墨烯乳液及 NR/PMMA-石墨烯复合材料的性能

摘要 使用亲水性大分子 RAFT 试剂通过可逆加成-断裂链转移 (RAFT) 聚合制备聚甲基丙烯酸甲酯 (PMMA)-石墨烯乳液。此外，石墨烯是利用金属冶炼行业的废石墨制备的，以降低聚合物复合材料的成本并更加环保。通过 Hummers 法和改良的 Hummers 法（不使用硝酸钠）合成氧化石墨烯（GO），然后使用 L-抗坏血酸作为还原剂将其改性为还原（r）GO。透射电子显微镜和 zeta 电位分析表明 PMMA 附着在石墨烯表面上具有良好的稳定性。此外，PMMA-石墨烯复合材料作为天然胶乳的填料可以提高复合膜的机械性能和导电性。