氧化石墨烯掺杂高内相乳液多孔复合材料的制备及其应用

Preparation and application of graphene oxide doped high internal phase emulsion porous composites

合成了一种新型石墨烯掺杂型多孔复合材料,并应用于苏丹红染料分离富集。以修饰聚乙烯吡咯烷酮的氧化石墨烯为粒子稳定剂,二乙烯基苯和丙烯酸异辛酯为油相,氯化钙及过硫酸钾溶液为水相形成油包水型高内相乳液, 65℃下热聚合得到掺杂氧化石墨烯的多孔复合材料,并应用于苏丹红染料的吸附研究。结果表明,聚合材料多孔互通,渗透性好,对苏丹红Ⅰ-Ⅳ均具有良好的吸附性能,其吸附量分别为304.23、328.09、371.43和382.80 ng/mg,苏丹红染料解脱率范围为86.26%~94.54%。该材料可应用于食品中苏丹红染料的分离富集。

A novel graphene oxide doped porous composite was synthesized and applied to the separation and enrichment of Sudan dyes. To form a picking emulsion, the graphene oxide was modified with polyvinylpyrrolidone and used as a particle stabilizer. With isooctyl acrylate (oil phase), calcium chloride and potassium persulfate (water phase), the grapheme oxide doped high internal phase porous composites was finally obtained through thermal polymerization of emulsion at 65 ℃.The results showed that the porous polymeric materials had good interpenetrating and good permeability. The adsorption properties to Sudan Ⅰ-Ⅳ were 304.23, 328.09, 371.43 and 382.80 ng/mg, respectively. The elution rate of Sudan dyes ranged from 86.26% to 94.54%. The graphene oxide doped porous composite can be wsed for sample preparation of Sudan dyes in food.