邻苯二甲酸酯核-壳结构型分子印迹微球的制备及分子识别性能

发布时间：2018-01-15 05:28

本文关键词：邻苯二甲酸酯核-壳结构型分子印迹微球的制备及分子识别性能　出处：《高分子材料科学与工程》2016年10期 　论文类型：期刊论文

【摘要】：以交联的壳聚糖微球为载体,4-氨基邻苯二甲酸二丁酯为模板分子,以α-甲基丙烯酸为功能单体,二乙醇二甲基丙烯酸酯为交联剂,合成了对邻苯二甲酸酯(PAEs)具有特异性识别和吸附功能的新型分子印迹聚合物。通过红外光谱、核磁共振、扫描电镜表征其分子结构,利用紫外光谱测定该分子印迹微球对邻苯二甲酸二丁酯(DBP)的选择识别性能,并构建了理论识别模型方程。结果表明,成功合成了PAEs新型核-壳结构型分子印迹微球,其对DBP表现出优异的选择吸附性能,印迹因子α=3.17,选择因子β=2.17。构建的理论方程定量解析出该分子印迹聚合物微球识别模板分子符合Scatchard模型与Langmuir模型,并显示出优异的动态吸附特性。有关结果为PAEs污染物的去除与分离提供了有益参考。
[Abstract]:Using cross-linked chitosan microspheres as carrier, dibutyl 4-amino-phthalate as template molecule, 伪 -methacrylic acid as functional monomer and diethyldimethacrylate as crosslinking agent. A novel molecularly imprinted polymer with specific recognition and adsorption functions was synthesized. Its molecular structure was characterized by IR, NMR and SEM. The selective recognition performance of the molecularly imprinted microspheres for dibutyl phthalate (DBP) was determined by UV spectroscopy, and the theoretical identification model equation was established. A novel core-shell molecularly imprinted microsphere (PAEs) was successfully synthesized. The molecular imprinted microspheres exhibited excellent selective adsorption properties for DBP, and the imprinting factor 伪 ~ (3. 17) was obtained. The selected factor 尾 _ (2.17.) the theoretical equation was constructed to quantitatively analyze the molecular imprinted polymer microsphere recognition template molecule in accordance with the Scatchard model and the Langmuir model. The results provide a useful reference for the removal and separation of PAEs pollutants.
【作者单位】：浙江农林大学化学系;浙江农林大学工程学院;浙江农林大学环资学院;
【基金】：浙江省自然科学基金资助项目(LY14E030016) 浙江省科技厅重大科技专项(2010C33070)
【分类号】：O631.3
【正文快照】： 分子印迹技术(MIT)是近几年发展起来的模拟分子特异识别作用的新技术,其利用交联反应将目标分子(模板分子)和功能单体通过相互作用生成稳定的聚合物,洗除目标分子后生成分子印迹聚合物(MIP)[1]。MIP上留有与目标分子结构、官能团互补的空穴,它对目标分子以及与目标分子相似的

【相似文献】