化学还原法制备聚丙烯酰胺-甲基丙烯酸／氧化亚铜复合微球

Preparation of P(AM-co-MAA)/Cu_2O composite microspheres by chemical reduction

采用反相悬浮聚合法合成了聚丙烯酰胺-甲基丙烯酸(P(AM-co-MAA))微凝胶,并以其为模板,通过化学还原法制备了一系列微米级、表面具有纳米颗粒堆积的P(AM-co-MAA)/Cu2O复合微球.利用扫描电子显微镜(SEM)、能谱分析(EDS)、红外分析(FT-IR)和热重分析(TG)对复合微球的形貌、无机沉积物和相对含量等进行了表征.研究了Cu(Ac)2浓度、葡萄糖浓度、反应时间和温度等因素对微球表面形貌和沉积无机物的影响.结果表明,当Cu(Ac)2浓度为0.20 mol/L,葡萄糖浓度为0.30 mol/L,在70℃下反应20 min,得到表面负载有均匀致密小颗粒Cu2O堆积的P(AM-co-MAA)/Cu2O复合微球.

P（AM-co-MAA） copolymer microspheres were prepared by reverse suspension polymerization technique, and using acrylamide （AM） and methacrylic acid （MAA） as monomer. A series of polymeric/inorganic P （AM-co-MAA）/Cu2O composite microspheres with patterned surface were prepared by chemical reduction between Cu（Ac）2 in microspheres and glucose in solution, and using P （AM-co-MAA） as the template. The morphology and inorganic dosage of the composite microspheres have been characterized by scanning electron microscopy （SEM）, energy dispersive spectrometer （EDS）, Fourier transform infrared （FT-IR） and thermogravimetric analyses （TG）. It shows that the morphology and inorganic deposition of the composite microspheres were controlled by adjusting concentration of Cu （Ac）2, and C6H12O6, reaction temperature and reaction time. The results indicated that the P（AM-co-MAA）/Cu2O composite microspheres with uniform small Cu2O particles in surface were prepared when the in-situ reaction between 0.20 mol/L Cu（Ac）2 and 0.3 mol/L glucose was carried out at 70℃ for 20 min.