高吸水性纳米蒙脱土/聚丙烯酸复合材料的合成及其血液相容性

Synthesis and blood compatibility of MMT/PAA superabsorbent composite

摘要: 以部分中和的丙烯酸(AA)、钠基蒙脱土为原料制备了聚丙烯酸(PAA)及蒙脱土(MMT)/聚丙烯酸高吸水性树脂。采用FTIR、XRD和SEM等手段对其结构进行表征。通过溶血实验、全血凝固时间实验和复钙化凝血时间实验对材料的血液相容性进行评价。结果表明：在聚合过程中，丙烯酸与蒙脱土片层中发生了化学反应；聚合后蒙脱土片层剥离，在复合材料中达到纳米级分散；所制备的聚丙烯酸以及蒙脱土/聚丙烯酸高吸水性树脂均具有良好的血液相容性。

Abstract: Poly (acrylic acid) (PAA) and montmorillonite (MMT)/PAA superabsorbent resins were synthesized by partly neutralized acrylic acid (AA) and sodium type montmorillonite. The structure of the superabsorbents was characterized by FTIR, XRD and SEM, and its blood compatibility was measured by the hemolysis test, coagulation time test and recalcification time test. The results show that montmorillonite layers reacted with acrylic acid during polymerization. The layers exfoliated and scattered in the composite at nano size after the polymerization. Both of the superabsorbent resins have good blood compatibility.