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首页> 外文期刊>Journal of Polymers and the Environment >Chemical Modification of Nano Polyacrylonitrile Prepared by Emulsion Polymerization Induced by Gamma Radiation and Their Use for Removal of Some Metal Ions
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Chemical Modification of Nano Polyacrylonitrile Prepared by Emulsion Polymerization Induced by Gamma Radiation and Their Use for Removal of Some Metal Ions

机译：γ射线乳液聚合法制备的纳米聚丙烯腈的化学改性及其在去除金属离子中的应用。

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Emulsion polymerization of acrylonitrile (AN) was carried out using gamma irradiation at a dose of 20 kGy. Tween 80 (poly oxy ethylene sorbitan monooleate) and (sodium dodecylsulfate) SDS were used as emulsifiers. The chemical modification of nano PAN was carried out to convert the nitrile group into the carboxylic acid group by refluxed nano PAN with sodium hydroxide. The chemical modified nano PAN was characterized by Fourier transform infrared spectroscopy The Transmission electron microscopy has been used to assess the average particle diameter of the chemically modified nano PAN, the results indicates that the diameter of chemically modified nano PAN particle is ranged from 5 to 15 nm. The ability of modified nano PAN attachment with carboxylic acid groups have been applied effectively for adsorption of various metal ions such as (Pb2+, Cu2+ and Cd2+). The capability and efficiency of the modified nano PAN for the removal of Pb2+, Cu2+ and Cd2+ was detected by atomic absorption spectroscopy. A solution containing about 10 mg L-1 of three metal ions of (Pb2+, Cu2+ and Cd2+) was treated with 0.01 g of modified nano PAN at a temperature of 40 degrees C. The metal ion removal capacity of modified nano PAN was found to follow the order: Cd2+ > Cu2+ > Pb2+. The highest removal efficiency of the modified nano PAN was for Cd2+, in which the highest amount of Cd2+ removal was 4.951 mg g(-1) dry of modified nano PAN.
机译：使用γ射线以20kGy的剂量进行丙烯腈（AN）的乳液聚合。吐温80（聚氧乙烯脱水山梨糖醇单油酸酯）和（十二烷基硫酸钠）SDS用作乳化剂。通过用氢氧化钠使纳米PAN回流，进行了纳米PAN的化学修饰，将腈基转化为羧酸基。用傅立叶变换红外光谱对化学修饰的纳米PAN进行表征。利用透射电子显微镜对化学修饰的纳米PAN的平均粒径进行了评价，结果表明化学修饰的纳米PAN的粒径为5〜15。纳米具有羧酸基团的改性纳米PAN连接的能力已有效地应用于各种金属离子的吸附，例如（Pb2 +，Cu2 +和Cd2 +）。通过原子吸收光谱法检测了改性纳米PAN去除Pb2 +，Cu2 +和Cd2 +的能力和效率。在40摄氏度的温度下，用0.01 g改性纳米PAN处理包含约10 mg L-1的三种金属离子（Pb2 +，Cu2 +和Cd2 +）的溶液。发现改性纳米PAN的金属离子去除能力为请按照以下顺序：Cd2 +> Cu2 +> Pb2 +。改性纳米PAN的最高去除效率是Cd2 +，其中Cd2 +去除的最高量为干燥的改性纳米PAN 4.951 mg g（-1）。

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