【摘要】 以丙烯酸(AA)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)和高岭土(Kaolin)为原料,采用溶液聚合法分别制备出聚丙烯酸(PAA)高吸水树脂、聚(丙烯酸-co-2-丙烯酰胺基-2-甲基丙磺酸)(P(AA-co-AMPS))高吸水树脂、P(AA-co-AMPS)/Kaolin复合高吸水树脂,并通过傅里叶变换红外光谱、扫描电镜、X射线衍射等测试方法对其结构与性能进行表征。结果表明:Kaolin与P(AA-co-AMPS)高吸水树脂之间为物理共混;PAA高吸水树脂、P(AA-co-AMPS)高吸水树脂和P(AA-co-AMPS)/Kaolin复合高吸水树脂的吸水倍率分别为231,323,357 g/g,吸盐水倍率分别为35.6,64.1,66.4 g/g,保水率分别为51.3%,55.6%,57.9%,凝胶形变量分别为3.75,4.10,2.23 mm;树脂的吸水速率由小到大依次为PAA高吸水树脂、P(AA-co-AMPS)高吸水树脂、P(AA-co-AMPS)/Kaolin复合高吸水树脂。更多还原

【Abstract】 Polyacrylic acid(PAA) superabsorbent resin, polyacrylic acid-co-2-acrylamido-2-methylpropanesulfonic acid(P(AA-co-AMPS)) superabsorbent resin and P(AA-co-AMPS)/kaolin composite superabsorbent resin were prepared by solution polymerization from acrylic acid(AA), 2-acrylamido-2-methylpropane sulfonic acid(AMPS) and kaolin. Their structure and properties were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction,etc.. The results showed that physical blending occurred between kaolin and P(AA-co-AMPS) superabsorbent resin; the water absorption of PAA, P(AA-co-AMPS) superabsorbent resin and P(AA-co-AMPS)/kaolin composite superabsorbent resin was 231, 323, and 357 g/g, the saltwater absorption 35.6, 64.1 and 66.4 g/g, the water retention rate 51.3%, 55.6%, 57.9%, and the gel deformation 3.75, 4.10 and 2.23 mm, respectively; and their water absorption rate was in the order of PAA superabsorbent resin,P(AA-co-AMPS) superabsorbent resin and P(AA-co-AMPS)/kaolin composite superabsorbent resin from low to high.更多还原