壳聚糖 - g - N - 甲基哌嗪氯化铵的合成与表征：一种复合絮凝剂
Synthesis and characterization of chitosan-g-N-methyl piperazinium chloride: A hybrid flocculant.
作者信息
Dharani Muthumanickam, Balasubramanian Sengottuvelan
机构信息
Department of Inorganic Chemistry, Guindy Campus, University of Madras, Chennai 600 025, India.
Department of Inorganic Chemistry, Guindy Campus, University of Madras, Chennai 600 025, India.
出版信息
Int J Biol Macromol. 2015 Nov;81:778-84. doi: 10.1016/j.ijbiomac.2015.09.019. Epub 2015 Sep 11.
Flocculation is one of the most widely applied techniques for water treatment. Flocculants based on natural polymer has received more attention due to their eco-friendliness in recent years. New water soluble N-methyl piperazinium chloride grafted chitosan flocculant (chitosan-g-N-MPC) was successfully synthesized and thoroughly characterized using FTIR, NMR and powder X-ray diffraction analytical techniques. Incorporation of N-MPC enhanced the ionic character of the chitosan backbone and improved its water solubility. The flocculation performance of chitosan-g-N-MPC was tested against bentonite suspension. The flocculation performance of chitosan-g-N-MPC was investigated under various pH conditions. Turbidity and zeta potential measurements were employed to investigate the flocculation behavior of the chitosan-g-N-MPC. The characteristics of the industrial wastewater before and after flocculation were analyzed. The morphology of the polymer and flocs were studied by TEM analysis.
絮凝是水处理中应用最广泛的技术之一。近年来，基于天然聚合物的絮凝剂因其生态友好性而受到更多关注。成功合成了新型水溶性N-甲基哌嗪氯化铵接枝壳聚糖絮凝剂（壳聚糖-g-N-MPC），并使用傅里叶变换红外光谱（FTIR）、核磁共振（NMR）和粉末X射线衍射分析技术对其进行了全面表征。引入N-MPC增强了壳聚糖主链的离子特性并提高了其水溶性。针对膨润土悬浮液测试了壳聚糖-g-N-MPC的絮凝性能。在各种pH条件下研究了壳聚糖-g-N-MPC的絮凝性能。采用浊度和zeta电位测量来研究壳聚糖-g-N-MPC的絮凝行为。分析了絮凝前后工业废水的特性。通过透射电子显微镜（TEM）分析研究了聚合物和絮凝物的形态。
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