Kwon Seung Hyuk, Sim Hyung Hoon, Choi Hyoung Jin
Department of Polymer Science and Engineering, Inha University, Incheon 22212, Korea.
J Nanosci Nanotechnol. 2019 Jul 1;19(7):3905-3910. doi: 10.1166/jnn.2019.16265.
Biopolymeric Arabic gum (AG) coated carbonyl iron (CI) particles were synthesized using a solvent casting process, and then their coating was confirmed using scanning electron microscopy analysis. Thermal property and chemical structure of the produced AG coated CI particles were investigated by thermalgravimetric analysis and Fourier transform infrared spectroscopy. In addition, from the measurement using vibration sample magnetometer, magnetic properties including saturation magnetization were also observed. The magnetorheological (MR) fluid was prepared by dispersing CI/AG particles in silicone oil and then its typical MR behaviors of shear stress and shear viscosity were compared to those of the pure CI suspension. Sedimentation stability of the CI/AG based MR suspension was observed to be improved compared to that of the pure CI suspension according to the Turbiscan test.
采用溶剂浇铸法合成了生物聚合物阿拉伯胶（AG）包覆的羰基铁（CI）颗粒，然后通过扫描电子显微镜分析确认了其包覆情况。利用热重分析和傅里叶变换红外光谱对制备的AG包覆CI颗粒的热性能和化学结构进行了研究。此外，通过振动样品磁强计测量，还观察到了包括饱和磁化强度在内的磁性。通过将CI/AG颗粒分散在硅油中制备了磁流变（MR）流体，并将其典型的剪切应力和剪切粘度MR行为与纯CI悬浮液的行为进行了比较。根据Turbiscan测试，观察到基于CI/AG的MR悬浮液的沉降稳定性比纯CI悬浮液有所提高。
