ZIF-8@PDMAPMA复合材料的构筑及其性能研究

李禹红; 乔瑶雨; 李超; 何乃普; 闻静; 赵晓竹; 张学辉; 黎白钰

doi:10.11777/j.issn1000-3304.2021.21041

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ZIF-8@PDMAPMA复合材料的构筑及其性能研究

研究论文 | 更新时间：2023-05-22

- ZIF-8@PDMAPMA复合材料的构筑及其性能研究
- Fabrication and Properties of ZIF-8@PDMAPMA Composite Materials
- 高分子学报 2021年52卷第9期页码：1174-1183
- 作者机构：
  
  1.兰州交通大学，研究院，兰州 730070
  2.兰州交通大学，化学与生物工程学院，兰州 730070
- 作者简介：
  
  E-mail: henaipu@mail.lzjtu.cn
- 基金信息：
  
  甘肃省科技计划(20YF8GA032);国家自然科学基金(基金号 51963014)
- DOI：10.11777/j.issn1000-3304.2021.21041
  中图分类号：
- 纸质出版日期：2021-09-20，
  
  网络出版日期：2021-08-20，
  
  收稿日期：2021-02-02，
  
  修回日期：2021-02-21，
扫描看全文
李禹红,乔瑶雨,李超等.ZIF-8@PDMAPMA复合材料的构筑及其性能研究[J].高分子学报,2021,52(09):1174-1183.

Li Yu-hong,Qiao Yao-yu,Li Chao,et al.Fabrication and Properties of ZIF-8@PDMAPMA Composite Materials[J].ACTA POLYMERICA SINICA,2021,52(09):1174-1183.
李禹红,乔瑶雨,李超等.ZIF-8@PDMAPMA复合材料的构筑及其性能研究[J].高分子学报,2021,52(09):1174-1183. DOI： 10.11777/j.issn1000-3304.2021.21041.

Li Yu-hong,Qiao Yao-yu,Li Chao,et al.Fabrication and Properties of ZIF-8@PDMAPMA Composite Materials[J].ACTA POLYMERICA SINICA,2021,52(09):1174-1183. DOI： 10.11777/j.issn1000-3304.2021.21041.

摘要

采用分步法(路线I)和一步法(路线II和路线III)分别合成了金属有机框架(MOFs)/高分子复合材料(ZIF-8@PDMAPMA)，并采用粉末X射线衍射(PXRD)、傅里叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和热重分析(TGA)等对其进行了表征. ZIF-8@PDMAPMA复合材料由高分子柔性链包覆ZIF-8晶体颗粒形成核壳纳米颗粒，探讨了不同合成方法对其形貌的影响. ZIF-8@PDMAPMA纳米颗粒呈球状或类似ZIF-8晶体形状轮廓. 反应体系中单体、有机配体以及反应过程中形成的高分子链均具有乳化作用，实现了对复合纳米材料粒径及其分布的有效控制，粒径仅50 nm，且分布均一. 高分子柔性链对MOFs晶体颗粒的有效包裹导致ZIF-8@PDMAPMA对N

吸附能力减弱. ZIF-8@PDMAPMA亲水性明显增强，从而使其在水中的分散性和稳定性得到明显改善，且粒径分布均一. 同时，实现了ZIF-8@PDMAPMA对苯扎氯铵的有效负载和可控释放，最大负载量达到0.05 g/g，且释放率达到82% . 动力学模拟结果显示，复合材料内部的ZIF-8的孔隙和表面的高分子柔性链对苯扎氯铵具有多层吸附行为. 高分子柔性链与刚性MOFs晶体有效结合，极大地改善了MOFs在水相中的稳定性，并将进一步拓宽其应用范围和领域.

Abstract

MOFs/polymers composite materials (ZIF-8@PDMAPMA) were fabricated by step method (Route I) or one pot method (Route Ⅱ and Route Ⅲ)

and characterized by PXRD

FTIR

SEM

TEM and TGA. ZIF-8@PDMAPMA composite materials were core-shell nanoparticles in which ZIF-8 crystal particles were coated by flexible polymer chains. The effects of synthesis methods on the morphology of ZIF-8@PDMAPMA nanoparticles were explored. The shape of nanoparticles was spherical or similar to ZIF-8 crystal profile. The size and distribution of the nanoparticles were controlled by emulsification of monomers

organic ligands and polymer chains in the process of nanoparticles formation

and its size was 50 nm with regular distribution. Additionally

the effective encapsulation of MOFs crystal particles by polymer flexible chains led to the decrease of N

adsorption capacity of ZIF-8@PDMAPMA nanoparticles. However

the hydrophilicity of ZIF-8@PDMAPMA nanoparticles was remarkably enhanced

and it had good dispersibility and excellent stability with uniform size distribution of particles in water. Moreover

benzalkonium chloride was loaded and then controlled release by ZIF-8@PDMAPMA nanoparticles in the aqueous with the maximum loading of 0.05 g/g and the release rate of 82%. The results of adsorption kinetic models showed that the multilayer adsorption behavior of the nanoparticles for benzalkonium chloride had occurred in the pores of ZIF-8 in the internal and the flexible polymer chains on the surface of the nanoparticles presented. Finally

it can be expected that the combination of flexible polymer chains and rigid MOFs crystals will greatly improve the stability of MOFs in aqueous phase

and broaden its applications.

关键词

金属有机框架高分子复合物核壳纳米颗粒浸润性能药物缓释

Keywords

MOFsPolymer compositeNanoparticles with core-shell structureWettabilityControlled release

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