化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (3) : 157-162. DOI: 10.19817/j.cnki.issn1006-3536.2022.03.032

科学研究

Fe³⁺/N-(2-羟乙基)乙二胺阳离子复合淀粉微球的制备及工艺优化

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Preparation and process optimization of Fe³⁺/N-(2-hydroxyethyl) ethylenediamine cationic CSM

Shang Qingyang¹, Su Xiuxia¹, Zhang Jing², Yan Haining¹

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Received
2021-10-19
Issue Date	Revised Date
2022-03-29	2021-10-19

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摘要

采用反相乳液聚合法制备了Fe³⁺/N-(2-羟乙基)乙二胺阳离子复合淀粉微球(CSM),通过单因素探索实验和响应曲面设计优化,探讨了FeCl₃·6H₂O用量、N-(2-羟乙基)乙二胺(AEEA)用量、K₂S₂O₈/NaHSO₃用量、MBAA用量、复合乳化剂用量及反应温度等因素对CSM吸附Cr(Ⅵ)性能的影响。工艺最佳合成条件如下,以1.5g St为基准,AEEA为3.4665g,FeCl₃·6H₂O为5g,K₂S₂O₈/NaHSO₃用量为0.8g,MBAA 0.5g,复合乳化剂2.0g,反应温度为60℃。结果表明:CSM对水中Cr(Ⅵ)(100mg/L)的去除率可达85.74%,吸附量为17.15mg/g。通过红外光谱和扫描电镜等手段表征CSM,发现CSM形状规整,表面具有一定的粗糙度。

Abstract

Fe³⁺/N-(2-hydroxyethyl) ethylenediamine cationic starch microspheres (CSM) were prepared by reversed-phase emulsion polymerization.The effects of dosages of FeCl₃·6H₂O,N-(2-hydroxyethyl) ethylenediamine (AEEA),initiator,crosslinking agent and reaction temperature on the adsorption performance of Cr(Ⅵ) by CSM were investigated.The best technological conditions were:based on St with a mass of 1.5g,AEEA was 3.4665g,FeCl₃·6H₂O was 5g,K₂S₂O₈/NaHSO₃ was 0.8g,MBAA was 0.5g,composite emulsifier was 2.0g,and the reaction temperature was 60℃.The results shown that the removal rate of Cr(Ⅵ)(100mg/L) by CSM can reach 85.74%,and the adsorption capacity was 17.15mg/g.Through the determination and characterization of CSM by FT-IR and SEM,it was concluded that the shape of CSM was regular and the surface had a certain roughness.

关键词

阳离子复合淀粉微球 / 反相乳液聚合 / 吸附材料 / 吸附性能

Key words

cationic starch microsphere / inverse emulsion polymerization / adsorption material / adsorption performance

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Fe³⁺/N-(2-羟乙基)乙二胺阳离子复合淀粉微球的制备及工艺优化[J]. 化工新型材料, 2022, 50(3): 157-162 DOI:10.19817/j.cnki.issn1006-3536.2022.03.032

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基金资助

陕西省教育厅项目(21JK0971)

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