CIESC Journal ›› 2020, Vol. 71 ›› Issue (10): 4704-4710.DOI: 10.11949/0438-1157.20200210

• Separation engineering • Previous Articles     Next Articles

Molecularly imprinted materials with core-shell structure for directed desiccation

Zhuangfei JIANG1,Jiayuan HE1,Rongrong MA1,Qingyao LI1,Lili YANG1,Ling TAN2,Qihui ZHANG1()   

  1. 1.School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
    2.School of Pharmacy, Chongqing University, Chongqing 400044, China
  • Received:2020-03-02 Revised:2020-04-14 Online:2020-10-05 Published:2020-10-05
  • Contact: Qihui ZHANG

核-壳结构分子印迹材料用于定向脱苦的研究

蒋壮飞1,何家垣1,马蓉蓉1,李清瑶1,杨莉莉1,谭玲2,张起辉1()   

  1. 1.重庆大学化学化工学院,重庆 400044
    2.重庆大学药学院,重庆 400044
  • 通讯作者: 张起辉
  • 作者简介:蒋壮飞(1995—),男,硕士研究生,1044579823 @qq.com
  • 基金资助:
    国家自然科学基金项目(81973451);医工联合项目(2019CDYGYB027);2019技术预见与制度创新项目(cstc2019jsyj-yzysbAX0020);重庆市科委项目(cstc2018jcyjAX0661);重庆市教育委员会科学技术研究项目(KJZD-K201800103);重庆市研究生创新基金项目(CYS18033);中央高校基本科研业务费(2019CDXYHG0013)

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

摘要:

以SiO2为支撑材料、甲基丙烯酸(MAA)为功能单体、偶氮二异丁腈(AIBN)为引发剂、乙二醇二甲基丙烯酸酯(EGDMA)为交联剂,制备了可选择性吸附柠檬汁中苦味物质的表面分子印迹聚合物(SMIPs)材料。利用透射电镜和红外吸收光谱等手段对SMIPs进行表征,随后进行吸附能力和选择性研究。结果表明,SMIPs具有核-壳结构,且有着良好的吸附性能(27.72 mg/g)和快速吸附能力(60 min),吸附符合二级动力学模型,吸附过程符合Langmuir单层吸附模型。最后,将SMIPs用于柠檬汁中苦味物质吴茱萸内酯的去除,结果显示SMIPs具有良好的脱苦性能。

关键词: 核-壳材料, 纳米材料, 二氧化硅, 表面分子印迹, 吸附剂, 苦味物质, 脱苦

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