磁诱导高取向水凝胶的构筑及功能  

Construction and Functions of Magnetically Induced Highly Oriented Hydrogels

作　　者：罗涛 马爱洁[1] 白海燕[1] 程勇博 周宏伟[1] LUO Tao;MA Aijie;BAI Haiyan;CHENG Yongbo;ZHOU Hongwei(School of Materials and Chemical Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学材料与化工学院,西安710021

出　　处：《材料导报》2021年第5期5206-5213,共8页Materials Reports

基　　金：陕西省自然科学基础研究计划重大基础研究项目(2017ZDJC-22);陕西省教育厅自然科学专项项目(17JK0380)。

摘　　要：磁诱导制备高取向水凝胶可赋予其各向异性的支持、驱动、传输、结构等特殊功能,从而使得高取向水凝胶成为生物工程材料应用的理想候选者。同时,磁诱导制备方法不受限于材料尺寸且取向方向容易控制,是目前较为简单、有效的制备高取向水凝胶的方法之一。本文主要从各向异性偶极-偶极作用力和磁能角度分析了磁性纳米填料及非磁性材料在磁场作用下的取向机理;阐述了磁诱导取向水凝胶在仿生学领域的最新研究进展;最后,对磁诱导构建取向水凝胶的未来研究和发展进行了展望。Highly oriented hydrogels prepared by magnetically induced can give the gel support,drive,transmission,structure and other special anisotropic functions,thus hydrogels have long been regarded as promising candidates for bioengineering materials applications.Meanwhile,the magnetic-field-induced strategy is one of the simpler and more effective strategies for prepared oriented hydrogel because the orientation direction and shape of the hydrogel samples are not limited.In this review,we aim to summarize the orientation mechanism of magnetic nanofillers and non-magnetic materials under the magnetic field,and mainly from the perspective of anisotropic dipole-dipole force and magnetic energy.The latest research progress of magnetically induced orientation hydrogels in the field of bionics is expounded.Finally,the future research and deve-lopment of magnetically induced oriented hydrogels are prospected.

关 键 词：取向结构水凝胶 磁诱导 各向异性 偶极-偶极作用 磁能 

分 类 号：O631.2[理学—高分子化学]