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AMPS/CMC 改性丙烯酸吸水树脂的 制备及其在土壤中的应用研究

Preparation of AMPS/CMC Modified Acrylic Water Absorbent Resin and its Application in Soil

材料科学与工程 / 2023,5(1)：1-11 / 2023-07-14 166 281

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• 作者： 廖露红¹      陈来¹²      代艺¹³      周裕鑫¹³      陈柏志¹      黄思颖¹      袁瑶¹      吕柯¹      黄鹏宇¹      董礼¹     
• 单位：

  1．重庆科技学院化学化工学院，重庆；
  2．重庆玮司祺新材料科技有限公司，重庆；
  3．重庆智油数岩科技有限公司，重庆

• 关键词： 高吸水树脂；羧甲基纤维素；土壤应用；生物降解
• High-absorbent; Methyl; Cellulose-soil; Application-biodegradation
• 摘要： 丙烯酸树脂（PAA）具有优良的吸水保水性能，可作为保水剂应用到农业中，但PAA树脂的耐盐性能及降解性能较差，限制了其应用范围，通常需对其改性。本论文以羧甲基纤维素钠（CMC）、丙烯酰胺基-2-甲基丙烷磺酸（AMPS）为改性剂，采用水溶液聚合法制备的AMPS/CMC改性丙烯酸树脂，其在蒸馏水中吸水倍率由改性前的1929.3g/g提高到2847.17g/g，在生理盐水中吸液倍率由改性前的75.4g/g提高为130.9g/g。扫描电镜测试结果表明，AMPS/CMC改性可明显增加吸水树脂的褶皱数量和空洞数量及直径，使树脂具有更优良的吸水保水能力。土壤应用研究结果表明，吸水树脂添加，能提高绿豆的发芽率，利用0.5%酶溶液降解AMPS/CMC改性树脂，36℃下9h可降解52%。由此表明，其作为保水剂与土壤具有良好的协同作用，其在农业土壤保水领域具有良好的推广应用前景。
• Acrylic resin (PAA) has excellent water-absorbing and water-retainingproperties and can be used as a water-retaining agent in agriculture. However,its poor salt-resisting and degradation properties limit its application, it usuallyneeds to be modified. In this thesis, the modified acrylic resin was prepared byaqueous solution polymerization with sodium carboxymethyl cellulose (CMC),acrylamide-isobutane methylene propane sulfonic acid AMPS, in distilled water,the water absorption ratio was increased from 1929.3g/g to 2847.17g/g, and innormal saline, the water absorption ratio was increased from 75.4g/G to 130.9g/g. The results of SEM showed that AMPS/CMC modification could increase thenumber of folds and voids, and increase the diameter of the resin. The results ofsoil application showed that AMPS/CMC modified resin could be degraded by52% at 36 ℃ for 9h, when the germination rate of soybean was added and theAMPS/CMC modified resin was degraded by 0.5% enzyme solution. Therefore,as a water-retaining agent, it has a good synergistic effect with soil, and has agood application prospect in the field of agricultural soil water-retaining.
• DOI： https://doi.org/10.35534/mse.0501001
• 引用： 廖露红，陈来，代艺．AMPS/CMC改性丙烯酸吸水树脂的制备及其在土壤中的应用研究［J］．材料科学与工程，2023，5（1）：1-11．