聚苯乙烯/二氧化硅荧光微球的制备与表征

Preparation and Characterization of Polystyrene/Silica Fluorescent Microspheres

以聚苯乙烯和Na_2SiO_3·9H_2O为原料,通过油/水界面法合成了聚苯乙烯/二氧化硅复合粒子。在此基础上,通过溶胀法进一步合成了负载玫瑰红B的聚苯乙烯/二氧化硅荧光微球。通过SEM、BET、FL等表征手段对其相关性能进行了测试。结果表明,荧光微球的大小为400～500 nm。与玫瑰红B相比,荧光微球的光学性能受溶剂和pH的影响更小,这表明荧光微球具有更加优良的发光性能。

Polystyrene/silica(PS/SiO2) composite particles were synthesized by the novel oil/water interface method using polystyrene and Na2SiO3·9 H2O as raw materials. On this basis, PS/SiO2 fluorescent microspheres loaded with Rhodamine B were further synthesized by the swelling method. The related properties were tested by SEM, BET, FL and other characterizations. The results showed that the size of the fluorescent microspheres was 400 ~ 500 nm. The optical properties of fluorescent microspheres were less affected by solvents and pH than Rhodamine B, indicating that the fluorescent microspheres have more excellent luminescence performance.