碳酸钙基聚合物的制备及其对铜离子的吸附性能  

Preparation of Calcium Carbonate-based Polymer and its Adsorption Properties of Copper Ions

作　　者：林妹 谢微[4] 梁明华 汤泉[1,2,5] 谢泉文 董文霞 无 LIN Mei;XIE Wei;LIANG Minghua;TANG Quan;XIE Quanwen;DONG Wenxia;无(College of Material and Chemical Engineering,Hezhou University,Hezhou 542899,China;Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization,Hezhou 542899,China;Citic Environment Technology(Guangzhou)Co.,Ltd.,Guangzhou 510660,China;Research Institute of Food Science and Engineering Technology,Hezhou University,Hezhou 542899,China;Guangxi Heyuan Science and Technology Development Co.,Ltd.,Hezhou 542899,China)

机构地区：[1]贺州学院材料与化学工程学院,广西贺州542899 [2]广西碳酸钙资源综合利用重点实验室,广西贺州542899 [3]中信环境技术(广州)有限公司,广东广州510660 [4]贺州学院食品科学与工程技术研究院,广西贺州542899 [5]广西贺源科技发展有限责任公司,广西贺州542899

出　　处：《化工技术与开发》2024年第1期26-30,共5页Technology & Development of Chemical Industry

基　　金：贺州市科学研究与技术开发计划项目(贺科攻202219,20012);贺州学院校级科研项目(2022ZZZK01,2022ZC11)。

摘　　要：用3-(甲基丙烯酰氧)丙基三甲氧基硅烷对碳酸钙进行活化改性,将甲基丙烯酸和二甲基丙烯酸乙二醇酯在碳酸钙表面聚合,制备了碳酸钙基聚合物,考察了吸附时间、温度、初始浓度、pH对碳酸钙基聚合物吸附铜离子效果的影响,用X射线衍射仪、扫描电子显微镜和红外光谱对制备的碳酸钙基聚合物进行了表征。结果表明,碳酸钙基聚合物吸附铜离子的最优条件为:pH=7、吸附时间3h、初始浓度18mg·L-1、温度25℃。在最优条件下,碳酸钙基聚合物对铜离子的吸附率达到99.62%。红外光谱分析结果表明,碳酸钙基聚合物表面存在烷烃官能团;扫描电镜结果表明,基底碳酸钙是有规则的方解石晶型,在体型网络状聚合物的作用下紧密结合,衍射分析结果证明,碳酸钙基聚合物对铜离子有较好的吸附能力。Calcium carbonate was activated and modified with 3-(methacryloyloxy)propyltrimethoxysilane,and methacrylic acid and ethylene glycol dimethyl acrylate were polymerized on the surface of calcium carbonate to prepare a calcium carbonate-based polymer.The effects of adsorption time,temperature,initial concentration,and pH on the adsorption of copper ions with calcium carbonate based polymers were investigated.The preparation of calcium carbonate-based polymers were characterized by X-ray diffraction,scanning electron microscope and infrared spectrum.The optimal conditions for the adsorption of copper ions with calcium carbonate-based polymers were as followed:pH=7,adsorption time 3h,initial concentration 18mg/L,temperature 25℃.Under these conditions,the adsorption rate of calcium carbonate polymer to copper ion was 99.62%.The infrared spectrum analysis results indicated that there were alkane functional groups on the surface of calcium carbonate based polymers.Scanning electron microscopy results showed that the base calcium carbonate was a regular calcite crystal type and was closely bound under the action of the network-like polymer.Diffraction analysis proved that the calcium carbonate-based polymer had good adsorption capacity for copper ions.

关 键 词：碳酸钙基聚合物 铜离子 3-(甲基丙烯酰氧)丙基三甲氧基硅烷 吸附 

分 类 号：O635.1[理学—高分子化学]