摘要
文章利用3-氨丙基三乙氧基硅烷(KH-550)对生化黄腐酸(BFA)进行改性得到改性生化黄腐酸(M-BFA),在引发剂聚琥珀酰亚胺(PSI)的作用下使其与聚天冬氨酸(PASP)反应成功制备出复合水凝胶(M-BFA/PASP)。进一步考察了M-BFA/PASP水凝胶在不同pH值和不同温度下的溶胀性能以及不同时间内的缓释性能。结果表明:在酸性条件下复合水凝胶M-BFA/PASP的溶胀比由4.604 6下降到2.595 1,在碱性条件下其溶胀比则下降到3.218 7。当温度由30℃升至60℃时,其溶胀比由原来的3.046 1下降到1.573 9。此外,在90 min内复合水凝胶M-BFA/PASP内的尿素释放完全。因此,复合水凝胶M-BFA/PASP对pH值及温度具有较强的敏感性且具有很好的缓释效果。研究为黄腐酸的应用提供了一个新的思路。
Biochemical fulvic acid(M-BFA) was modified by 3-aminopropyltriethoxysilane(KH-550),and the composite hydrogel(M-BFA/PASP) was successfully prepared by the reaction of the modified biochemical fulvic acid(M-BFA) with polyaspartic acid(PASP) under the action of the initiator polysuccinimide(PSI).The swelling properties of M-BFA/PASP hydrogels at different pH values and temperatures and the slow release properties at different time were investigated.The results showed that the swelling ratio of M-BFA/PASP hydrogel decreased from 4.604 6 to 2.595 1 under acidic condition and to 3.218 7 under alkaline condition.When the temperature rises from 30 ℃ to 60 ℃,the swelling ratio decreases from 3.046 1 to 1.573 9.In addition,urea was released completely in the composite hydrogel M-BFA/PASP within 90 min.Therefore,the composite hydrogel M-BFA/PASP has a strong sensitivity to pH values and temperature,and it has a good slow release effect.The study provides a new idea for the application of fulvic acid.
作者
时春辉
陆淑芬
张涛铸
胡立兵
SHI Chun-hui;LU Shu-fen;ZHANG Tao-zhu;HU Li-bing(School of Chemistry and Chemical Engineering,Tarim University,Alar 843300,China;Environmental Monitoring Station of the First Division of Xinjiang Production and Construction Corps,Alar 843300,China)
出处
《塑料科技》
CAS
北大核心
2024年第1期84-88,共5页
Plastics Science and Technology
基金
塔里木大学校长基金项目(TDZKSS202126)
新疆“天池英才”计划项目。
关键词
改性生化黄腐酸
聚天冬氨酸
溶胀比
缓释性能
Modified biochemical fulvic acid
Polyaspartic acid
Swelling ratio
Slow release performance
