Preparation and adsorption properties of rosin-based bisphenol A molecularly imprinted microspheres

编号 020025701

推送时间 20200921

研究领域 林产化工 

年份 2020 

类型 期刊 

语种 英语

标题 Preparation and adsorption properties of rosin-based bisphenol A molecularly imprinted microspheres

来源期刊 Materials Today Communications

期 第257期

发表时间 20200319

关键词 Rosin;  Polyurethane;  Molecular imprinting microspheres;  Bisphenol A;  Adsorption properties; 

摘要 Rosin-based bisphenol A (BPA) molecular imprinted polymer (P-MIP) microspheres were prepared by suspension polymerization using rosin-based isophorone diisocyanate polyurethane as the primary monomer, methacrylic acid as the functional monomer, and BPA as the template molecule. The structure, morphology, particle size and adsorption properties of the microspheres were characterized and analyzed by means of infrared spectroscopy, scanning electron microscopy, laser particle size analysis and ultraviolet-visible spectrophotometry. The results showed that the imprinted microspheres exhibited a spherical shape with an average particle size of 123 μm. The adsorption behavior of BPA on the P-MIP microspheres followed a pseudo-first-order kinetic model, corresponding to physical adsorption. The isothermal adsorption model conformed to the Freundlich model, indicating that the binding sites were non-uniform. The imprinting factors (σ) of the P-MIP microspheres for BPA, para-tert-butyl phenol, hydroquinone and phenol were 2.69, 1.53, 1.26 and 1.10, respectively, indicating that the P-MIP microspheres had specific adsorption properties for BPA. After the imprinted microspheres were repeatedly used for five times, the adsorption rate was 96 %, indicating good repeatability.

服务人员 尚玮姣

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