核-壳结构分子印迹材料用于定向脱苦的研究

doi:10.11949/0438-1157.20200210

Abstract

Abstract:

SiO₂ as the support material, methacrylic acid (MAA) as the functional monomer, azodiisobutyronitrile (AIBN) as the initiator, ethylene glycol dimethacrylate (EGDMA) as the cross-linking agent, a surface molecularly imprinted polymer (SMIPs) material which can selectively absorb bitter substances in lemon juice was prepared. Transmission electron microscopy and infrared absorption spectroscopy were used to characterize the SMIPs, followed by adsorption capacity and selectivity studies. The results showed that SMIPs had core-shell structure, good adsorption performance (27.72 mg/g) and fast adsorption capacity (60 min). The adsorption was in accordance with the second-order kinetic model, and the adsorption process was in accordance with the Langmuir monolith adsorption model. Finally, SMIPs were used to remove the bitter substance evodine in lemon juice, and the result showed that SMIPs had good desiccation ability.

Key words: core-shell material, nanomaterials, silica, surface molecular imprinting, sorbents, bitter substances, take off the bitter

CLC Number:

R 917

Zhuangfei JIANG, Jiayuan HE, Rongrong MA, Qingyao LI, Lili YANG, Ling TAN, Qihui ZHANG. Molecularly imprinted materials with core-shell structure for directed desiccation[J].CIESC Journal, 2020, 71(10): 4704-4710.

Figures/Tables 7

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Molecularly imprinted materials with core-shell structure for directed desiccation

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