以微孔纳米羟基磷灰石(HAP)为无机载体,甲基丙烯酸甲酯(MMA)和苯乙烯(St)为聚合单体,采用悬浮聚合法制备了HAP/P(MMA-St)复合微球.研究了影响球体粒度及其分布的主要因素和微球的吸附性能.结果表明,表面活性剂用量(质量分数,下同)为1‰,MMA用量为2%,HAP用量为30%,转速为300 r/min时复合微球的合格球收率最高,为86.4%.当微球中HAP的质量分数为36.07%时,HAP/P(MMA-St)微球对牛血清蛋白的最大吸附量Q_e=18.70 mg/g,比未加HAP时,增加了4.65 mg/g.
Polymeric HAP/P(MMA-St) composite microspheres were synthesized via suspension polymerization with microporous hydroxyl apatite(HAP) nanomaterial as inorganic carrier,polymethyl methacrylate(MMA) and styrene(St) as monomers. The effects of main factors on the particle distribution and adsorption performance of polymeric HAP/P(MMA-St) composite microspheres were investigated. Experimental results show that a maximal yield of qualified microspheres of 86.4% could be achived when the mass fractions of surfactant,MMA and HAP were 10%,20% and 30% accordingly under a rotation speed of 300 r/min. The absorbability of polymeric microspheres for BSA was studied through a static adsorption process. When the mass fraction of HAP was 36.07%,adsorption quantity was Q_e=18.70 mg/g,an increase of 4.65 mg/g could be observed compared to that without adding.
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