| 木质素磺酸钠-壳聚糖聚电解质对铜离子的吸附性能 |
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| 引用本文： | 王春海,艾青,赵银凤,卑莹,方桂珍.木质素磺酸钠-壳聚糖聚电解质对铜离子的吸附性能[J].林产化学与工业,2012,32(1):29-34. |
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| 作者姓名： | 王春海 艾青 赵银凤 卑莹 方桂珍 |
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| 作者单位： | 东北林业大学材料科学与工程学院, 黑龙江 哈尔滨 150040 |
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| 基金项目： | 国家林业局行业公益项目(200904072);国家自然科学基金资助项目(30471363) |
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| 摘 要： | 以碱木质素和壳聚糖为原料,依据静电作用原理制备了木质素磺酸钠-壳聚糖(SLS-CS)聚电解质复合物,采用红外光谱(IR)和X射线(XRD)表征了SLS-CS聚电解质复合物的化学结构、形态特征,测定了SLS-CS聚电解质复合物对铜离子的吸附性能。研究结果表明:壳聚糖的氨基发生质子化形成NH3+,木质素磺酸钠的磺酸基阴离子和壳聚糖的NH3+基团发生中和反应形成了聚电解质复合物,经过反应后,壳聚糖的无定形峰减小,SLS-CS高分子排列更加有序化,分子间作用力增强;SLS-CS聚电解质复合物对铜离子的吸附平衡时间约为5 h,饱和吸附容量为12.5 mg/g,吸附等温线符合Freundich方程。
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| 关 键 词： | 木质素 壳聚糖 木质素磺酸盐 木质素磺酸钠-壳聚糖聚电解质 |
Adsorption of Copper Ions by Sodium Lignosulfonate-chitosan Polyelectrolyte Complex |
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| WANG Chun-hai,AI Qing,ZHAO Yin-feng,BEI Ying,FANG Gui-zhen.Adsorption of Copper Ions by Sodium Lignosulfonate-chitosan Polyelectrolyte Complex[J].Chemistry & Industry of Forest Products,2012,32(1):29-34. |
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| Authors: | WANG Chun-hai AI Qing ZHAO Yin-feng BEI Ying FANG Gui-zhen |
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| Institution: | (College of Materials Science and Engineering,Northeast Forestry University,Harbin 150040,China) |
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| Abstract: | According to the theory of static action,sodium lignosulfonate-chitosan(SLS-CS) polyelectrolyte complex was prepared from alkaline lignin and chitosan.The structure of sodium lignosulfonate-chitosan(SLS-CS) polyelectrolyte was characterized by Fourier transform infrared(FT-IR) and X-ray powder diffraction(XRD).The adsorption property for copperions by sodium lignosulfonate-chitosan polyelectrolyte was also evaluated.The results indicated that NH+3 was formed by the protonated amino groups of chitosan which formed sodium lignosulfonate-chitosan(SLS-CS) polyelectrolyte complex by reacting with —SO3Na of sodium lignosulfonate through electrostatic adsorption.Compared with the sodium lignosulfonate and chitosan,the amorphous peak of chifosan tends to decrease,the arrangement of sodium lignosulfonate-chitosan(SLS-CS) polymer appears more ordered,intermolecular force is enhanced,the adsorption equilibrium time for copper ions is about 5 h,and the saturated adsorption capacity is 12.5 mg/g.The adsorption isotherm curve fits well with Freundich equation. |
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| Keywords: | lignin chitosan lignosulfonate sodium lignosulfonate-chitosan polyelectrolyte complex |
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