| 引用本文: | 于智,李爽,王志国,张瑾.不同发泡剂对AA/AM/AMPS三元共聚高吸水树脂性能的影响[J].材料科学与工艺,2016,24(2):63-67.DOI:10.11951/j.issn.1005-0299.20160208. |
| YU Zhi,LI Shuang,WANG Zhiguo,ZHANG Jin.Effect of different blowing agent on the properties of porous structure super absorbent resin with AA/AM/AMPS trecopolymers[J].Materials Science and Technology,2016,24(2):63-67.DOI:10.11951/j.issn.1005-0299.20160208. |
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| 摘要: |
| 以丙烯酸(AA)、丙烯酰胺(AM)和2-丙烯酰胺-2-甲基丙磺酸(AMPS)为单体，过硫酸铵(APS)为引发剂，N,N′-亚甲基双丙烯酰胺(NMBA)为交联剂，Span-60作为分散剂，环己烷作为分散介质与传热介质，分别以NaHCO3、甲醇与乙醇的混合液以及丙酮为发泡剂，采用反相悬浮聚合法制备了AA/AM/AMPS三元共聚多孔型高吸水性树脂，探讨了不同孔结构对树脂的吸水性能、耐盐性能及保水性能的影响.实验结果表明：聚合物内部具有多孔结构；甲醇乙醇加入量为18 mL时吸液性能最好，吸水率为1 700 g/g，吸盐水率为138 g/g；以丙酮为发泡剂的吸水树脂的保水性能最好.树脂的吸液性能与保水性能受树脂形成的孔洞影响，同时与外部联通的孔洞易形成类似于植物的“气孔蒸腾”作用，不利于树脂的保水性能.
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| 关键词: 高吸水性树脂 反相悬浮聚合法 发泡剂 多孔结构 保水性能 |
| DOI：10.11951/j.issn.1005-0299.20160208 |
| 分类号:TQ322.4+ |
| 文献标识码:A |
| 基金项目: |
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| Effect of different blowing agent on the properties of porous structure super absorbent resin with AA/AM/AMPS trecopolymers |
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YU Zhi,LI Shuang,WANG Zhiguo,ZHANG Jin
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(School of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110000,China)
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| Abstract: |
| Porous super-absorbent resin with AA/AM/AMPS trepolymer structure was synthesized by inverse-suspension polymerization with acrylic acid (AA), acrylamide (AM) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) as comonomer, ammonium persulfate (APS) as initiator, N,N′-methylenebisacrylamide (NMBA) as cross-linker and Span-60 as dispersant, NaHCO3 or the mixed solution of methanol and ethanol, or acetone as blowing agent. The effect of the pore structure on the water absorption, salt resistance and water retention property of the resin was investigated. The results shows that the copolymer possesses a porous structure, and the product shows the best water absorbency of 1 700 g/g and the 0.9% NaCl solution absorbency of 138 g/g when 18 mL methanol and ethanol was used. The resin using acetone as blowing agent has a best water retention property. The solution absorption performance and water retention properties of the resin are affected by the holes within the resin, and the holes is not beneficial to the water retention due to the opening porous structure resulting in the so-called stomatal transpiration as the plant.
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| Key words: super absorbent resin inverse suspension polymerization blowing agent porous structure retentive water property |
