改性生化黄腐酸引发M-BFA/PASP水凝胶的制备及其性能探究
Preparation and Properties of M-BFA/PASP Hydrogel Initiated by Modified Biochemical Fulvic Acid
时春辉 1陆淑芬 2张涛铸 1胡立兵1
作者信息
- 1. 塔里木大学化学化工学院,新疆 阿拉尔 843300
- 2. 新疆兵团第一师环境监测站,新疆 阿拉尔 843300
- 折叠
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.
Abstract
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.
关键词
改性生化黄腐酸/聚天冬氨酸/溶胀比/缓释性能Key words
Modified biochemical fulvic acid/Polyaspartic acid/Swelling ratio/Slow release performance引用本文复制引用
基金项目
塔里木大学校长基金(TDZKSS202126)
新疆"天池英才"计划项目()
出版年
2024
国家科技期刊平台
NSTL
万方数据