Structural Regulation Of Cerberus Emulsion And Template Method For Synthesis Of Anisotropic Particles

Anisotropy emulsion has drawn increasing research interest,because of its particular anisotropic structure,which endowed with its unique performance and application value.The unique topology of Cerberus emulsion,makes it to be potential candidate in the fields,such as drug,pesticide,photosensitive materials,nutrients.Cerberus emulsion,prepared by one-step emulsification in this study,is employed as a template to prepared anisotropy particles of different morphology by adjusting the relevant factors and the structural properties.We also prepared the Cerberus emulsion with the magnetic response by doping Fe₂O₃.The Cerberus droplets can move,rotate and arrange under magnetic field.In addition,we discussed the effect of the concentration of Fe₂O₃ and oil phase ratio on the properties of magnetic emulsion.The main contents and results of this thesis are as follows:1.The stable Cerberus emulsion is prepared with the three immiscible oil as the dispersed phase,surfactant aqueous solution as continuous phase by one-step mixing,successfully obtained in the system of VO/PFOEMA/DMS/0.4%F127_aq.In this section,Cerberus emulsion with different topological structures is prepared by changing the ratio of temperature and oil phase ratio in the process of preparation.We determine the three-phase region based on the phase diagrams of different temperature.The stability of Cerberus emulsions under different temperatures are investigated.Adjustment of emulsion composition realized the change of three-phase volume regulation of Cerberus droplets.We obtaioned the particles of 45? and the anisotropy particles we prepared are in excellent agreement with the emulsion.2.The polymerizable monomers and immiscible oil are employed as the dispersed phase.Surfactant aqueous solution is used as continuous phase.The stable Cerberus emulsion in the system of ETPTA/FC-770/DMS/0.4%F127_aqis obtained.A series of different topological structure of Cerberus emulsions are prepared by changing the ratio of surfactant concentration,oil phase ratio,temperature and emulsification energy.The change of emulsion composition realize the change of volume three-phase volume of Cerberus droplets;the droplet size of Cerberus emulsion changed with emulsification energy.The anisotropy particles we prepared with topology in excellent agreement with the emulsion droplet.We obtained the anisotropy particles of different morphology by changing the oil phase ratio,emulsification energy and emulsification method.Anisotropy particles with various topology are prepared by changing the composition of initial composition;by adjusting the intensity of emulsification to prepare a series of anisotropy particles with identical shape and different particle sizes,that has achieved the particle size regulation of micro and nano-scale range.This simple approach can be extended to a huge family of polymeric anisotropic particles with different compositions and structures.In a word,the.preparation of anisotropy particles with Cerberus emulsion as template has the advantages of various compositions,wide size range and mass production,which is expected to expand the application in various fields.3.The magnetic Cerberus emulsion is prepared in the system of ETPTA/HFE 7200/SO/0.4%F127_aqby using the oil of ETPTA with Fe₂O₃ particles,immiscible oil of HFE 7200 and silicone oil as the dispersed phase,surfactant aqueous solution as continuous phase.The concentration of magnetic particles is changed to study their effects on the stability and morphology of the magnetic emulsion.Besides,the magnetic responsive of Cerberus emulsion were studied through VSM.The results show that the magnetic droplets move,rotate,and arrange under the magnetic field.