Synthesis and adsorption properties of composite microsphere with dual-magnetic responses

CAI Lifeng; WANG Chunli; LIN Wang; WU Dingcai

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Synthesis and adsorption properties of composite microsphere with dual-magnetic responses

更新时间：2023-12-11

- Synthesis and adsorption properties of composite microsphere with dual-magnetic responses
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 55, Issue 4, Pages: 75-80(2016)
- 作者机构：
  
  1. 莆田学院环境与生物工程学院∥福建省新型污染物生态毒理效应与控制重点实验室,福建,莆田,351100
  2. 中山大学化学与化学工程学院∥材料科学研究所∥聚合物复合材料及功能材料教育部重点实验室,广东,广州,510275
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016，
  
  Published Online：25 July 2016，
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CAI Lifeng, WANG Chunli, LIN Wang, et al. Synthesis and adsorption properties of composite microsphere with dual-magnetic responses. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 55(4):75-80(2016)
DOI：

CAI Lifeng, WANG Chunli, LIN Wang, et al. Synthesis and adsorption properties of composite microsphere with dual-magnetic responses. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 55(4):75-80(2016) DOI：

摘要

采用种子乳液聚合法制备了

)温敏复合微球。利用透射电镜、红外光谱仪、Zeta粒度分析仪、热重分析仪和振动样品磁力计对微球结构进行了表征，通过紫外-可见光分光光度法研究了微球对模型有机物罗丹明B(RhB)的吸附和磁感应脱附再生行为。结果表明，复合微球呈现多核壳结构，增加聚合体系疏水单体苯乙烯(St)用量，微球中Fe

Abstract

Seed emulsion polymerization was carried out to fabricate a novel class of thermo-sensitive

) composite microspheres (

) )The structures of the as-prepared composite microspheres were characterized by TEM

FTIR

DLS

TGA and VSM. UV-Vis was employed to investigate the adsorption and magnetic-induced desorption behaviors using Rhodamine B (RhB) as a model molecule. The results indicated that the composite microspheres possessed a unique multi-core-shell structure. The magnetic nanoparticle content and saturation magnetic induction intensity of microspheres decreased with an increase of the St content during polymerization. RhB adsorption performance was improved when a proper amount of hydrophobic St comonomer was introduced into microspheres. The composite microspheres showed a high RhB adsorption capacity of up to 13.31 mg/g under an acid condition. As compared with the free desorption under room temperature

much more RhB on the composite microspheres could be desorbed under alternating magnetic field. The adsorption capacity of composite microsphere still achieved 8.82 mg/g after five adsorption/desorption cycles

indicating good dual-magnetic responses (magnetic separation and magnetic-induced desorption).

关键词

复合微球温敏双重磁响应吸附再生

Keywords

composite microspherethermo-sensitivedual-magnetic responsesadsorptionregeneration

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