仿生矿化法制备磁响应自修复水凝胶及其性能研究

Preparation of magnetic response self-healing hydrogel by biomimetic mineralization process and study on its properties

针对传统水凝胶的复杂制备方法及样品综合性能不佳等问题,以纳米Fe3O4和聚丙烯酸为原料,利用仿生矿化法制备了磁响应自修复水凝胶。通过SEM、FT-IR、XRD、TG、磁性测量系统、旋转流变仪对所制备水凝胶的形貌结构及性能进行表征。结果表明,制得的水凝胶结构均匀,对磁场响应灵敏,自修复时间短且可反复自修复,水凝胶的磁性能和流变性能可通过调节纳米Fe3O4的添加量来调控。

Traditional preparation methods of hydrogel is complicated and the product samples have poor comprehensive performance.Biomimetic mineralization process is used to prepare magnetic response self-healing hydrogel from nano-Fe3O4 and polyacrylic acid.The structure and properties of the prepared hydrogel are characterized by scanning electron microscope,Fourier transform infrared spectroscopy,X-ray diffraction,magnetic property measurement system and rheometer.The results show that the as-prepared hydrogel has a uniform structure,is sensitive to external magnetic fields,and can self-heal repeatedly within a short time about 5 minutes.The magnetic property and rheology of the hydrogel can be regulated by adjusting the adding amount of nano-Fe3O4.