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改性聚丙烯酸吸水树脂的制备及其与中草药复合材料在水果保鲜中的潜在应用

Preparation of Modified Polyacrylic Acid Water Absorbent Resin and Its Potential Application in Fruit Preservation with Chinese Herbal Medicine

Modern Analytical Chemistry Research / 2022,4(3): 1-13 / 2022-10-19 912 677

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• Authors: 赵子骏      丁小珂      邓雪婷      赵祥龙      李城      黄郡瑶      石一研      周裕鑫      陈以会     
• Information:

  重庆科学学院化学化工学院，重庆
  

• Keywords: 高吸水树脂；耐盐；生物降解；水果保鲜
• Super absorbent resin; Salt tolerance; Biodegradation; Fruit preservatives
• Abstract: 为了提高丙烯酸吸水树脂（PAA）的吸水能力和降解性能，本论文以含有2-丙烯酰胺基-2-甲基丙磺酸（AMPS）和天然可降解的高分子羧甲基纤维素（CMC）为改性剂，采用水溶液聚合方法制备了改性聚丙烯酸（PAA）吸水性树脂。结果表明，当丙烯酸为21%，AMPS、CMC、交联剂和引发剂分别为AA质量的20%、1.8%、0.02%和2%时，制备的PAA吸水树脂在去离子水中的吸水倍率从改性前的483g/g提高到875 g/g，生理盐水中的吸水倍率为238g/g。改性PAA在纤维素酶中的降解率为64.8%。由此可见，CMC和AMPS改性能提高PAA树脂的吸水、耐盐和降解性能。同时，改性PAA吸水树脂与中药粉复合材料能提高果蔬的保质期。其研究结果可为水果保鲜剂的进一步研究提供参考和吸水树脂的拓展应用提供一个新思路。
• In order to improve the water absorption capacity and degradation performance of acrylic acid water absorbent resin (PAA), modified polyacrylic acid (PAA) absorbent resin was prepared by aqueous solution polymerization with 2-acrylamido-2-methylpropanesulfonic acid (AMPS) and natural degradable polymer carboxymethyl cellulose (CMC) as modifiers. The results showed that when the acrylic acid was 21%, the mass of AMPS, CMC, cross-linker and initiator were 20%, 1.8%, 0.02% and 2% of AA respectively, the water absorption rate of PAA absorbent resin in deionized water increased from 483g / g to 875g /g, and that in normal saline was 238g/g. The degradation rate of modified PAA in cellulase was 64.8%.Thus, CMC and AMPS can improve the water absorption, salt resistance and degradation performance of PAA resin. At the same time, the composite material of modified PAA absorbent resin and traditional Chinese medicine powder can improve the shelf life of fruits and vegetables. The research results can provide a reference for the further research of fruit preservatives and a new idea for the development and application of water absorbent resin.
• DOI: https://doi.org/10.35534/macr.0403001
• Cite: 赵子骏，丁小珂，邓雪婷，等．改性聚丙烯酸吸水树脂的制备及其与中草药复合材料在水果保鲜中的潜在应用［J］．现代分析化学研究，2022，4（3）：1-13．