高效吸水性凝胶的制备——推荐一个综合化学实验  

Synthesis of an Efficient Absorbent Gel:A Recommended Comprehensive Chemistry Experiment

作　　者：张昊翔 赵之翰 金永成 牛志强[1] 田金磊 Haoxiang Zhang;Zhihan Zhao;Yongchen Jin;Zhiqiang Niu;Jinlei Tian(College of Chemistry,Nankai University,Tianjin 300071,China.)

机构地区：[1]南开大学化学学院,天津300071

出　　处：《大学化学》2024年第11期251-258,共8页University Chemistry

基　　金：天津市普通高等学校本科教学改革与质量建设研究计划项目(B231005524)。

摘　　要：吸水性水凝胶是当今科研热点之一。水凝胶是一种高分子化合物,具有出色的吸水能力和保水能力,常用于医疗、卫生、农业、环保等领域,如制作敷料、尿不湿、保湿剂、植物栽培基质等。本实验以丙烯酸和丙烯酰胺为单体,通过光引发自由基聚合制备了一种新型高效水凝胶毛巾,其具有易折叠、可剪裁的优秀力学性质,也有传统水凝胶的高吸水性能。同时结合扫描电镜表征,可以让学生在制备实验的同时学习仪器分析相关操作,适用于本科综合化学实验。本实验同时借助染料吸附实验,制成五彩缤纷的透明水凝胶,具有极高的观赏性,生动有趣,更能激发学生对化学的兴趣与热爱。Absorbent hydrogel is currently a focal point in scientific research due to its excellent water absorption and retention properties.It is widely utilized in various fields such as medical,hygiene,agriculture,and environmental protection for applications including dressings,diapers,moisturizers,and plant cultivation substrates.This experiment employs acrylic acid and acrylamide as monomers to prepare an innovative hydrogel towel via photo-initiated free radical polymerization.The resulting hydrogel towel exhibits superior mechanical properties,including easy folding and cutting,along with traditional hydrogel's high water absorbency.Additionally,the experiment incorporates scanning electron microscopy for characterization,providing students with practical experience in instrumental analysis relevant to undergraduate comprehensive chemical laboratories.Furthermore,the creation of vibrant,colorful transparent hydrogels through dye adsorption experiments not only enhances the visual appeal of the project but also serves to ignite students'interest and passion for chemistry.

关 键 词：高效水凝胶 高分子材料 吸水性能 综合化学实验 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]