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耐温耐盐可降解改性丙烯酸吸水树脂的制备及其性能研究

Preparation and Properties of Temperature and Salt Resistant Degradable Modified Polyacrylic Acid Water Absorbent Resin

Material Science and Engineering / 2022,4(3): 1-13 / 2022-10-19 729 649

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• Authors: 丁小珂      李霞      赵子骏      陈来      廖露红      宁巧      高源      张文龙      沈炫珅      陈以会     
• Information:

  重庆科技学院化学化工学院，重庆

• Keywords: 丙烯酸改性吸水树脂；NVP；AMPS；耐温；耐盐
• Modified polyacrylic acid absorbent resin; Temperature resistance; Salt resistance; Biodegradability
• Abstract: 为了提高丙烯酸吸水树脂盐溶液和相对高温环境中的吸液能力，本论文以含有耐盐基团的2-丙烯酰胺基-2-甲基-1-丙烷磺酸（AMPS）、耐温官能团的N-乙烯基吡咯烷酮（NVP)和羧甲基纤维素钠（CMC）为改性剂，得到改性聚丙烯酸（PAA）吸水树脂。实验结果表明，当丙烯酸（AA）用量为21%，中和度66%，交联剂为0.04%，引发剂0.5%，AMPS和NVP分别为AA用量的30%和5.7%时，改性PAA树脂在生理盐水中的吸水倍率从改性前的20g/g提高到91g/g，在2000mg/L的NaCl中仍吸水77g/g；在人工尿液和人工血液中的吸水倍率分别为115g/g和89g/g；在55℃的去离子水中的吸水倍率从改性前的524g/g提高到2215g/g；在37℃，纤维素酶的作用下，4d改性PAA吸水树脂降解率高达72%。由此可见，改性能够提高PAA的吸水、耐温、耐盐和可降解性。
• In order to improve the water absorption ability of acrylic acid absorbent resin in salt solution and relatively high temperature environment, modified polyacrylic acid (PAA) absorbent resin was prepared by using 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS), N-vinyl pyrrolidone (NVP) and sodium carboxymethyl cellulose (CMC) as modifiers. The results showed that when the amount of acrylic acid (AA) was 21%, the neutralization degree was 66%, crosslinking agent was 0.04%, initiator was 0.5%, amps and NVP were 30% and 5.7% of AA respectively, the water absorption rate of modified PAA resin in normal saline increased from 20g /g to 91g/g, and it still absorbed 77g/g in 2000mg / L NaCl. The water absorption rate in artificial urine and artificial blood was 115g / g and 89g/g, respectively. The water absorption ratio of deionized water at 55 ℃ increased from 524g/g to 2215g/g. At 37℃,the degradation rate of modified PAA absorbent resin was as high as 72%. It can be seen that the modification can improve the water absorption, temperature resistance, salt resistance and biodegradability of PAA.
• DOI: https://doi.org/10.35534/mse.0403001
• Cite: 丁小珂，李霞，赵子骏，等．耐温耐盐可降解改性丙烯酸吸水树脂的制备及其性能研究［J］．材料科学与工程，2022，4（3）：1-13．