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核壳结构金属有机框架@聚苯胺纳米复合材料的制备及其电流变性能

Preparation of core-shell structured metal-organic framework@PANI nanocomposite and its electrorheological properties.

作者信息

Wen Qingkun, Ma Lili, Wang Chengwei, Wang Baoxiang, Han Rongjiang, Hao Chuncheng, Chen Kezheng

机构信息

College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao 266042 PR China

State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University Chongqing 400044 PR China.

出版信息

RSC Adv. 2019 May 9;9(25):14520-14530. doi: 10.1039/c9ra02268f. eCollection 2019 May 7.

DOI:10.1039/c9ra02268f
PMID:35519353
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9064143/
Abstract

A novel core-shell-type electrorheological (ER) composite material was fabricated using polyaniline as an insulating layer to the outer surface of the core conductive metal-organic framework (MIL-125) with controlled size and morphology. MIL-125 was firstly synthesized by a solvothermal method, and then polyaniline was synthesized in a polar solvent and a tight coating was successfully achieved to form a MIL-125@PANI core-shell nanocomposite. This core-shell structure greatly enhances the polarization ability of dispersed particles, thereby improving their rheological properties. The morphology of pure MIL-125 and MIL-125@PANI has been characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Their structure was characterized by X-ray powder diffraction. Moreover, the ER activity of MIL-125-based and MIL-125@PANI-based ER fluids by dispersing the particles into silicone oil was studied using a rotational rheometer. The results show that the MIL-125@PANI composite particles have higher ER properties.

摘要

一种新型的核壳型电流变（ER）复合材料被制备出来，该材料使用聚苯胺作为绝缘层涂覆在具有可控尺寸和形态的核导电金属有机框架（MIL-125）的外表面。首先通过溶剂热法合成MIL-125，然后在极性溶剂中合成聚苯胺，并成功实现紧密包覆，从而形成MIL-125@PANI核壳纳米复合材料。这种核壳结构极大地增强了分散颗粒的极化能力，进而改善了它们的流变性能。通过透射电子显微镜（TEM）和扫描电子显微镜（SEM）对纯MIL-125和MIL-125@PANI的形态进行了表征。通过X射线粉末衍射对它们的结构进行了表征。此外，使用旋转流变仪研究了将MIL-125基和MIL-125@PANI基电流变液中的颗粒分散到硅油中的电流变活性。结果表明，MIL-125@PANI复合颗粒具有更高的电流变性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/828eeb5b5668/c9ra02268f-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/815e44619713/c9ra02268f-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/e2a187a775b0/c9ra02268f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/0015b60695ae/c9ra02268f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/19eeb34b46fb/c9ra02268f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/a9aca78f79a4/c9ra02268f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/ccd3111cb79e/c9ra02268f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/b5bbacf8af0d/c9ra02268f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/6f65d564a147/c9ra02268f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/828eeb5b5668/c9ra02268f-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/815e44619713/c9ra02268f-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/e2a187a775b0/c9ra02268f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/0015b60695ae/c9ra02268f-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/19eeb34b46fb/c9ra02268f-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/a9aca78f79a4/c9ra02268f-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/ccd3111cb79e/c9ra02268f-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/b5bbacf8af0d/c9ra02268f-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/6f65d564a147/c9ra02268f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06e4/9064143/828eeb5b5668/c9ra02268f-f8.jpg

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