Ren Hanru, Ren Jun, Tao Ling, Ren Xuechang
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University Lanzhou 730070 P. R. China
Gansu Hanxing Environmental Protection Co. Ltd Lanzhou 730070 China.
RSC Adv. 2024 May 7;14(21):14758-14766. doi: 10.1039/d4ra01021c. eCollection 2024 May 2.
The swelling behaviors and water retention of superabsorbent materials prepared from acrylic acid/acrylamide copolymer and acid-modified attapulgite under ultrasonic treatment and different pH conditions were investigated. The results demonstrated that a suitable amount of attapulgite can effectively improve the absorption capacity. The superabsorbent achieved the highest absorptions of 1257.54 g g and 209.45 g g in distilled water and a 0.9 wt% NaCl solution, and a higher water absorbency occurred over a wide pH range of 5-9 when the ultrasonic power was 200 W, and the attapulgite content was 10%. Addition of attapulgite could significantly increase the water absorption and retention of this kind of material, which can be applied as a sand-fixing material.
研究了在超声处理和不同pH条件下，由丙烯酸/丙烯酰胺共聚物和酸改性凹凸棒石制备的高吸水性材料的溶胀行为和保水性能。结果表明，适量的凹凸棒石能有效提高其吸收能力。该高吸水性材料在蒸馏水和0.9 wt% NaCl溶液中的最高吸水量分别为1257.54 g/g和209.45 g/g，当超声功率为200 W且凹凸棒石含量为10%时，在5-9的较宽pH范围内具有较高的吸水性。添加凹凸棒石可显著提高这类材料的吸水和保水能力，其可作为固沙材料应用。
