摘要
以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酰胺(AM)和海泡石黏土(ST)为原料,采用微波辐射方法制备了ST接枝P(AMPS-co-AM)耐盐性高吸水性树脂,考察了海泡石用量、无机盐溶液金属离子价态和浓度对树脂吸水倍率的影响,研究了树脂的吸水速率和保水性能。用FTIR、XRD、SEM对吸水性树脂进行了表征。结果表明,树脂的吸水倍率随着无机盐溶液浓度的增加而减小,在不同价态金属离子盐溶液中,树脂的吸水倍率顺序为NaCl>CaCl2>FeCl3,在体系中适量地引入ST能显著提高树脂的吸水能力,树脂具有较快的吸水速率和良好的保水性能。FTIR和XRD表明,ST和有机单体之间发生了接枝共聚反应,部分单体插入到ST的层间形成插层型复合高吸水性树脂,SEM显示树脂具有多孔的层状结构。
Sepiolite （ST） grafted poly （ 2-acrylamido-2-methylpropanesulfonic acid-co-acrylamide ） highsalt superabsorbent resin was synthesized through microwave irradiation,using sepiolite ,2-aerylamido-2- methylpropanesulfonie acid （AMPS） and acrylamide （AM） as raw materials. The effects of the concentration of inorganic salt solution, kind of various metal ions and amount of ST on water absorbency of the superabsorbent resin were studied. The ratio of liquid absorption and water-retention properties of the superabsorbent resin were also studied. Meanwhile, the microstructure of resin was characterized by means of FTIR, XRD and SEM. The results indicate that the water absorbency of the superabsorbent resin decreases with increasing concentration of various external saline solutions, and has the following tendency in different metal ions saline solutions ： NaC1 〉 CaC12 〉 FeC13 , and that the water absorption capacity of the superabsorbent resin could be remarkably enhanced by introducing a proper amount of ST. And the superabsorbent resin has a high water absorption rate and good water retention properties. FTIR and XRD characterization indicates that the grafting eopolymerization reaction occurred between ST and the organic monomer. Some of the monomers were inserted into the interlamination of ST and intercalation was formed in the superabsorbent resin. SEM shows that the resin had microporous and laminate structure.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2013年第1期17-21,共5页
Fine Chemicals
基金
安徽省高校自然科学基金资助项目(KJ2009B054Z
KJ2009B120Z)~~
