| 光聚合壳聚糖基絮凝剂及其絮凝性能 |
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| 引用本文： | 孙永军,任梦娇,徐炎华,马江雅,张鹏,朱国成,肖雪峰,吴慧芳,尤朝阳,朱成雨.光聚合壳聚糖基絮凝剂及其絮凝性能[J].保鲜与加工,2016(3):58-64. |
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| 作者姓名： | 孙永军 任梦娇 徐炎华 马江雅 张鹏 朱国成 肖雪峰 吴慧芳 尤朝阳 朱成雨 |
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| 作者单位： | 南京工业大学 城市建设学院, 南京 211800;南京工业大学 环境科学与工程学院 江苏省工业节水减排重点实验室, 南京 211800,南京工业大学 城市建设学院, 南京 211800,南京工业大学 环境科学与工程学院 江苏省工业节水减排重点实验室, 南京 211800,安徽工业大学 建筑工程学院 生物膜法水质净化与利用技术教育部工程研究中心, 安徽 马鞍山 243002,湖南科技大学 土木工程学院, 湖南 湘潭411201,湖南科技大学 土木工程学院, 湖南 湘潭411201,南京工业大学 城市建设学院, 南京 211800,南京工业大学 城市建设学院, 南京 211800,南京工业大学 城市建设学院, 南京 211800,南京工业大学 城市建设学院, 南京 211800 |
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| 基金项目： | 国家自然科学基金 (51508268、51408215、51408004、41502331);住建部科学技术计划项目(2014-K7-010);江苏省自然科学基金(BK20150951);中国博士后科学基金(2016M591835) |
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| 摘 要： | 壳聚糖是一种天然碱性氨基多糖物质,其分子上分布着许多功能性的氨基和羟基,使其能成为潜在的高效絮凝剂。采用紫外光引发壳聚糖(CS)与丙烯酰胺(AM)、丙烯酰氧乙基三甲基氯化铵(DAC)接枝共聚制备P(CS-AD)絮凝剂,探讨了单体浓度、壳聚糖百分比、阳离子度、光引发剂浓度、光照时间对P(CS-AD)的特性粘度的影响,确定了合成的优化条件:单体浓度为30%~40%、壳聚糖百分比为10%~20%、阳离子度为30%~40%、光引发剂浓度为0.3%~0.5%、光照时间为120 min,优化后的制备的P(CS-AD)的特性粘度最高可达1865 mg/L。同时,采用红外光谱、扫描电镜(SEM)、差热热重分析(TG-DTA)对其进行表征。采用模拟硅藻土水样验证其絮凝性能,试验结果表明:P(CS-AD)的絮凝性能显著优于市售聚丙烯酰胺(PAM)。
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| 关 键 词： | 壳聚糖 絮凝剂 紫外光 接枝共聚 絮凝 |
| 收稿时间： | 2016/1/22 0:00:00 |
UV induced synthesis of chitosan flocculants and its flocculation performance |
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| Sun Yongjun,Ren Mengjiao,Xu Yanhu,Ma Jiangy,Zhang Peng,Zhu Guocheng,Xiao Xuefeng,Wu Huifang,You Chaoyang and Zhu Chengyu.UV induced synthesis of chitosan flocculants and its flocculation performance[J].Storage & Process,2016(3):58-64. |
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| Authors: | Sun Yongjun Ren Mengjiao Xu Yanhu Ma Jiangy Zhang Peng Zhu Guocheng Xiao Xuefeng Wu Huifang You Chaoyang and Zhu Chengyu |
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| Institution: | College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China;Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211800, P. R. China,College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China,Jiangsu Key Laboratory of Industrial Water-Conservation & Emission Reduction, College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211800, P. R. China,Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243002, Anhui, P. R. China,College of Civil Engineering, Hunan University of Science & Technology, Xiangtan 411201, Hunan, P. R. China,College of Civil Engineering, Hunan University of Science & Technology, Xiangtan 411201, Hunan, P. R. China,College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China,College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China,College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China and College of Urban Construction, Nanjing Tech University, Nanjing 211800, P. R. China |
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| Abstract: | Chitosan is a natural basic amino polysaccharide substance with many functional amino and hydroxyl groups on the molecular chain. So that it can become a potential flocculant. P(CS-AD) flocculant is graft copolymerized by chitosan (CS) and acrylamide (AM), acryloyloxyethyl trimethyl ammonium chloride (DAC) with UV irradiation. The effects of key factors on the intrinsic viscosity such as monomer concentration, chitosan percentage, cationic degree, photoinitiator concentration, and illumination time are discussed. The optimal synthesis conditions are determined:monomer concentration 30% to 40%, the percentage of chitosan 10%~20%, cationic degree 30%~40%, photoinitiator concentration 0.3%~0.5%, illumination time 120 min. The maximum intrinsic viscosity is 1865 mg/L after optimization. Infrared spectroscopy, scanning electron microscopy (SEM), and differential thermal analysis (TG-DTA) are used to characterize the graft copolymer. Diatomite water samples are used to verify its flocculation performance, and flocculation test results show that P (CS-AD) flocculation performance is significantly better than the commercially available polyacrylamide (PAM). |
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| Keywords: | chitosan flocculant ultraviolet light graft copolymerization flocculation |
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