【摘要】 复杂流体在新型材料合成、机械、智能控制、催化、医药、生物、环境等诸多领域有着非常重要的应用前景。目前,复杂流体中微观结构随外场的演化及复杂流体中个体间的复杂耦合作用尚不清楚,这严重制约着复杂流体的开发和应用。复杂流体中组元间的耦合作用、微观结构随外场的演化规律以及结构与性能的内在联系是复杂流体科学面临的关键科学问题,其研究亟需原位实验技术予以支撑。该研究拟建立基于同步辐射光源的X射线吸收(XAFS)/X射线衍射(XRD)联用技术、小角X射线散射(SAXS)/广角X射线散射(WAXS)/XAFS联用技术、SAXS/WAXS/拉曼光谱(Raman)联用技术、SAXS/WAXS/红外光谱(IR)联用技术、掠入射小角X射线散射(GISAXS)/紫外可见吸收光谱(UV-Vis)联用技术,开发适用以上联用技术的复杂流体原位研究样品环境(包括温度、压力、电场、剪切力场、混流、浓度等),用于跟踪复杂流体中原子、分子、纳米尺度结构基团等随外场的变化,揭示复杂流体中结构演化机制,并最终通过控制结构,达到改善和调控复杂流体性质的目的。更多还原

【Abstract】 Complex fluid has very important application prospects in new material synthesis, machinery, intelligent control, catalysis, medicine, biology, environtology,and so on. Because of the particularity and structural complexity of complex fluid, a small disturbance of the applied field to complex fluid could cause a big response. At present, how the microstructure of complex fluid evolves with the applied fields and what is the coupling interaction between individuals in complex fluid are still unclear, which not only restrict seriously the development and application of complex fluid, but also become the key scientific issues and frontier researches in complex fluid. To reveal the coupling interaction between molecules, the microstructure evolution with applied fields, and the inner link between structure and property, in-situ combining techniques are desired for studying complex fluid. This project intends to set up SAXS/WAXS/XAFS, XAFS/XRD, SAXS/WAXS/Raman, SAXS/WAXS/IR, and GISAXS/UV-Vis combining techniques on synchrotron radiation facilities. For tracking the structure evolution of complex fluid with the applied fields in atomic-scale,molecular scale, and nanoscale, the sample cells in real conditions will be developed, which involve the controllable temperature, pressure, electric field,shearing field, mixed-flow rate, concentration,respectively. We hope that this study could realize the support conditions for revealing the structure evolution mechanism of complex fluid and further improving the property of complex fluid.更多还原