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改性丙烯酸高吸水树脂土壤保水剂的制备及其应用研究

Preparation and Application Research of Modified Acrylic Super Absorbent Resin Soil Water-retaining Agent

董怡辰, 周裕鑫, 杨雪, 岳影, 杜美仪, 尹棠, 黄筠雁, 康碟, 钟瀚纬

Environment and Resource / 2026,8(2): 280-285 / 2026-06-17 47 20

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• Information:

  重庆科技大学化学化工学院，重庆

• Keywords:
  High water absorption resin; Temperature resistance; Salt resistance; 1soil application
  高吸水树脂; 耐温; 耐盐; 土壤应用
• Abstract: In this paper, using the aqueous solution polymerization method, Using 2-acrylamide-2-methylpropiononic acid (AMPS) containing strong hydrophilic group and salt resistant group and vinyl pyrrolidinone (NVP) containing temperature resistant group as copolymeric modified monomer, Using the naturally degradable sodium carboxymethyl cellulose (CMC) as a graft modifier, use N, N′ -methylene diacrylamide (NMBA) is a crosslinker, Potassium persulfate (KPS) was used as the initiator, The AMPS/NVP/CMC modified water absorption resin was prepared, The water absorption rate in deionized water, saline (0.9%NaCl solution) and 55 ℃ deionized water increased from modified 1289g/g, 158g/g and 1184g/g to modified 2742g/g, 411g/g and 2134g/g. The fied PAA was 52% degraded at 36℃ , 0.5% cellulase. It can be seen that the water absorption capacity, salt resistance and temperature resistance capacity of PAA water absorption resin are improved.The fluid absorption rate of AMPS/NVP/CMC modified water absorption resin in the soil was 330g/g, and the water retention rate was up to 80.74% on day 5, and the degradation rate was 44.34% in day 60 days. The effect of single fruit character, yield and water use efficiency. Through the application of water-absorbing resin in agriculture, the water absorption capacity of soil is improved and the growth of crops is promoted, which will be of great significance to the development of modern water-saving agriculture in China. 本文采用水溶液聚合法，以含有强亲水基团和耐盐基团的2-丙烯酰胺-2-甲基丙磺酸(AMPS)和含耐温基团的乙烯基吡咯烷酮（NVP）为共聚改性单体，以天然可降解的羧甲基纤维素钠（CMC）为接枝改性剂，以N，N’-亚甲基双丙烯酰胺（NMBA）为交联剂，过硫酸钾（KPS）为引发剂，制备了AMPS/NVP/CMC改性吸水树脂，其在去离子水、生理盐水中（0.9%NaCl溶液）和55℃的去离子水的吸水倍率分别从改性的1289g/g、158g/g和1184g/g提高至改性后的2742g/g、411g/g和2134g/g。在36℃，0.5%纤维素酶作用下，改性PAA9h可降解52%。由此可见，改性能提高PAA吸水树脂的吸水能力、耐盐性能和耐温能力。AMPS/NVP/CMC改性吸水树脂在土壤中吸液6h吸液倍率为330g/g，第5天的保水倍率高达80.74%，60天降解率达44.34%。对脆红李施用保水剂效果研究，得出施用保水剂对脆红李的单果性状、产量和水分利用效率均产生了有利的促进作用。通过对吸水树脂在农业上的应用研究，提高了土壤吸水能力、促进了作物生长，对我国现代化节水农业的发展具有重要意义。
• DOI: 10.35534/er.0802038 (registering DOI)
• Cite: 董怡辰，周裕鑫，杨雪，等．改性丙烯酸高吸水树脂土壤保水剂的制备及其应用研究［J］．环境与资源，2026，8（2）：280-285.