【摘要】 以纤维素为原料，甲基丙烯酸缩水甘油酯（GMA）为单体，过氧化苯甲酰为引发剂，通过水溶液聚合法制备纤维素接枝GMA共聚物（Cell-PGMA），并用聚乙烯亚胺（PEI）进行改性，得到产物Cell-PGMA-PEI，采用FT-IR、元素分析等方法对其进行结构表征。在静态条件下，研究吸附剂用量、吸附时间、溶液初始pH值、温度等因素对Cell-PGMA-PEI吸附Pb²⁺的影响。Langmuir和伪二阶动力学模型能够更好地拟合Cell-PGMA-PEI对Pb²⁺的吸附过程，表明其对金属离子的吸附主要是单分子层化学吸附。更多还原

【Abstract】 Using cellulose as raw material,glycidyl methacrylate（GMA）as monomer,benzoyl peroxide as initiator,cellulose grafted GMA（Cell-PGMA） copolymer was prepared by aqueous solution polymerization,and was modified by polyethyleneimine （PEI）,Cell-PGMA-PEI was obtained,and its structure was characterized by FT-IR and elemental analysis.Under static condition,the effects of the dosage of adsorbent,adsorption time,initial pH and temperature on the adsorption of Pb²⁺by Cell-PGMA-PEI were studied.Langmuir and pseudo second-order kinetic model can better fit the adsorption process of cell PGMA PEI for pb²⁺,indicating that the adsorption of metal ion is mainly monolayer chemisorption.更多还原