铁/蛋白质复合微粒的结构及其磁流变性能

STRUCTURE OF IRON/PROTEIN COMPLEX PARTICLE AND ITS MR PROPERTIES

磁流变液由于其具有较强的剪切应力而受到广泛重视。磁流变液最突出的问题之一是重力作用下的沉降。本文作者报道蛋白铁磁流变液的制备及蛋白铁表面结构的 XRD,TEM,IR检测和磁流变性能、温度效应、沉降稳定性。结果表明 ,蛋白铁实为晶体态 α- Fe和非晶质蛋白质的复合物。蛋白铁磁流变液具有良好的磁流变效应 。

Magnetorheological fluid (MRF) has drawn much attention due to its powerful shearing stress. The yield stress of MRF is about ten times greater than that of electrorheological fluid (ERF). But a projecting question is the subsidence of particles as a result of gravity for magnetorheological fluid. Fe particles have been prepared with microemulsion, and being coated by protein, polymeric protein Fe particles have been obtained. The preparation of MRF, and XRD,TEM,IR analysis of surface structure for protein Fe have been reported in the paper. The magnetorheological, temperature effects and subsidence stability have been investigated also on MRF of protein Fe. The results show that the protein Fe is a complex particle composition from crystal α Fe and non crystal protein. The magnetorheological fluid has good magnetorheological effect, and its subsidence stability is excellent compared with the single carbonyl iron.