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首页> 外文期刊>Journal of Applied Polymer Science >Chitin-halloysite nanoclay hydrogel composite adsorbent to aqueous heavy metal ions
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Chitin-halloysite nanoclay hydrogel composite adsorbent to aqueous heavy metal ions

机译：用丁香 - 霍罗伊钛矿纳米铅水凝胶复合吸附剂在重质金属离子水溶液中

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摘要

Halloysite nanoclay (HNC) was mixed with Chitin hydrogel film by phase inversion in water vapor atmosphere at room temperature. In the preparation, Chitin was dissolved in N,N-dimethyl acetamine/lithium chloride (DMAc/LiCl) and different amounts of HCN was dispersed well for the gelation process. The resultant Chitin-Halloysite nanoclay (CTH) hydrogel films containing HCN at 0, 0.1, 0.5, 1, and 4 wt % were used for the adsorbents of heavy metal ions. As the results, the tensile strength of the hydrogel composite was enhanced from 0.34 to 0.71 N/mm(2) while the elongation decreased from 66.43% to 49.93% with the increment of HNC concentration from 0 to 4 wt %. A reduction in the water content and the increment in the modulus confirmed the formation of highly dispersed nano-composites with improved interfacial interactions between nano-fillers and matrix. In the adsorption experiments of the ternary ion of Pb2+, Cu2+, and Cd2+, the removal capacity of Pb(II) was highly retained by the CTH hydrogel film relative to Cd(II) and Cu(II), shown Langmuir model with the maximum binding amount on the hydrogel composites were followed as order Pb (8.2 mg/g), Cu (4.2 mg/g), and Cd (2.1 mg/g). (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47207.
机译：通过在室温下通过水蒸气气氛中的相倒体混合Halloysite NaNoClay（HNC）。在制剂中，将几丁酸溶解在N，N-二甲基乙酰胺/氯化锂（DMAC / LICL）和不同量的HCN进行孔，以良好地分散凝胶化方法。将含有HCN为0,0.1,0.5,1和4wt％含有HCN的所得丁蛋白 - 霍氏石英纳米粘土（CTH）水凝胶膜用于重金属离子的吸附剂。结果，水凝胶复合物的拉伸强度从0.34-0.71N / mm（2）增强，而伸长率从66.43％降低至49.93％，随着0至4wt％的增量。水含量的降低和模量中的增量证实了高度分散的纳米复合材料的形成，具有改善纳米填料和基质之间的界面相互作用。在PB2 +，Cu2 +和CD2 +的三元离子的吸附试验中，CTH水凝胶膜相对于CD（II）和Cu（II）的高度保留Pb（II）的去除能力，显示Langmuir模型，最大遵循水凝胶复合材料上的结合量，为订单Pb（8.2mg / g），Cu（4.2mg / g）和Cd（2.1mg / g）。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47207。

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