Cerberus乳液的结构调控及模板法合成各向异性粒子

发布时间：2018-03-22 12:03

本文选题：Cerberus乳液　切入点：拓扑结构　出处：《扬州大学》2017年硕士论文　论文类型：学位论文

【摘要】：各向异性乳液越来越引起广大科研工作者的研究兴趣,主要是因为其特殊的各向异性结构赋予了其独特的性能及应用价值。Cerberus乳液是一种新型的各向异性乳液。其内相液滴具有三个组成各异、彼此独立的微相区,从而使得液滴的拓扑结构具有各向异性,极大地拓展了乳液在相关领域的应用。本论文以一步混合法制备Cerberus乳液,通过相关因素的调节制备具有不同形貌的Cerberus乳液并以Cerberus乳液为模板制备结构可控的各向异性粒子。本论文还通过Fe203的选择性掺杂制备了磁性Cerberus乳液,使得Cerberus液滴具备了磁响应性。在磁场作用下,Cerberus液滴进行可控转动,平动和定向排列。此外,初步探讨了 Fe203的浓度和乳液的组分配比对磁性乳液的影响。本论文的主要研究内容如下:1.以三种互不相溶的油为分散相,表面活性剂水溶液为连续相,利用一步混合法制备VO(植物油)/PFOEMA(2-(全氟辛基)乙基甲基丙烯酸酯)/DMS/0.4%F127_(aq)的Cerberus乳液。通过对温度、组份配比的改变实现了对Cerberus乳液拓扑结构的可控调节,其中包括液滴中各室的相对位置,各室之间的界面曲率,各室空间大小。此外,研究了不同温度下体系的部分相图,确定了不同温度下的三相区域,在三相区域内考察组份配比对Cerberus乳液拓扑结构的影响。2.以可聚合单体、与之不互溶的油为分散相,表面活性剂水溶液为连续相,利用一步混合法制备ETPTA(乙氧基三羟甲基丙烷三丙烯酸酯)/FC-770(全氟醚)/DMS(双-3-甲基丙烯基氧丙基化四甲基二硅氧烷)/0.4%F127_(aq)(聚氧丙烯聚氧乙烯共聚物三嵌段共聚物)的Cerberus乳液。通过对表面活性剂的浓度、组份配比、温度、乳化强度的改变实现了对Cerberus乳液拓扑结构的可控调节。组份配比的改变实现了对Cerberus液滴中油相体积比的调控,乳化强度的变化使得具有相同结构的Cerberus乳液粒径大小在微/纳米尺度内的连续可控调节。通过光引发聚合制备得到各向异性粒子,其形貌与母体液滴一致。在各向异性粒子的制备过程中,利用组份配比、乳化强度以及乳化方式的变化成功地实现了各向异性粒子形貌的规律性调控。研究结果表明:利用组份配比的变化制得了多种不同形貌的各向异性粒子;乳化强度的改变实现了各向异性粒子粒径大小在微米尺度范围内的规律性调控。该方法可以拓展到多种可聚合单体体系,可以制备多种组成各异,形貌多样的各向异性聚合物微球。因此,以Cerberus乳液模板法制备各向异性粒子具备形貌、组成多样,粒径范围宽,批量生产的优势,有望拓展各向异性粒子在各领域的应用。3.将磁性Fe_2O_3粒子选择性增溶在ETPTA/HFE 7200(乙基全氟丁基醚)/SO(硅油)/0.4%F127_(aq)体系的Cerberus液滴中,使得Cerberus乳液具备磁响应。调控磁性粒子的浓度,研究磁性粒子对乳液稳定性和形貌的影响;通过改变Cerberus乳液液滴中各相的组份配比,研究磁性Cerberus乳液的形貌和磁响应性。使用振动样品磁强计研究磁性乳液的磁响应性质以及磁场对磁性乳液的影响。研究结果表明,掺有磁性粒子的Cerberus具有较高的动力学稳定性,Fe203粒子在ETPTA中的选择性增溶不影响Cerberus液滴的形貌。在磁场诱导下可以实现Cerberus乳液的定向移动。此外,各向异性Cerberus液滴在磁场下可以实现转动及定向排列。
[Abstract]:The anisotropic emulsion has attracted more and more research interest for researchers, mainly because of its special anisotropic structure endowed with its unique performance and application value of.Cerberus emulsion is a new type of anisotropy. The emulsion droplets with three different composition, micro phase independent of each other, which makes the topology the droplet is anisotropic, greatly expand the application of emulsion in the related fields. In this paper, a mixed preparation of Cerberus emulsion, Cerberus emulsion prepared by adjusting the related factors with different morphologies and using Cerberus emulsion as template to prepare anisotropic particles with controllable structure. This paper synthesized magnetic Cerberus emulsion through the selective doping of Fe203, making the Cerberus droplet with magnetic response. Under the action of magnetic field, Cerberus drops of controllable rotation, translation and orientation. In addition, we discuss the effect of emulsion compositions on magnetic Fe203 and the concentration of emulsion. The main research contents of this thesis are as follows: 1. to three immiscible oil as the dispersed phase, surfactant solution as continuous phase, one step prepared by mixing with VO (vegetable oil) / PFOEMA (2- (perfluorooctyl) ethyl methacrylate) /DMS/0.4%F127_ (AQ) Cerberus emulsion. The temperature and composition change control of Cerberus emulsion topology adjustment, including the relative position of each chamber of the liquid drop in circles, the curvature of each chamber between the size of the room space. In addition, the partial phase diagram under different temperature system research, determine the three-phase region under different temperature, in the three-phase region investigation composition effect on the topology of.2. Cerberus emulsion by copolymerization of monomer, immiscible with the oil as the dispersed phase, surfactant and water The solution for the continuous phase, one step prepared by mixing with ETPTA (ethoxylated trimethylolpropane acrylate three three (/FC-770) Perfluoroethers) /DMS (double -3- methyl allyl propyl methyl siloxane oxygen four /0.4%F127_ two) (AQ) (polyoxyethylene polyoxypropylene copolymer three block copolymer emulsion) Cerberus. Through the concentration of the surfactant, composition, temperature, emulsifying strength change control of Cerberus emulsion topology adjustment. Composition change of the realization of Cerberus drops of oil phase volume ratio control, change the emulsifying strength with the same structure of Cerberus particle size in micro emulsion / continuous and controllable nano scale regulation. Through the photopolymerization preparation of anisotropic particles, the morphology and maternal droplet. In an anisotropic particle preparation process, composition using emulsion and emulsion side strength The change successfully realized the regularity of regulation anisotropic particle morphology. The results show that the anisotropy of the particle composition changes with different morphology were prepared; emulsifying strength to achieve change regularity of regulation at the micron scale within the range of the anisotropy of the particle size. This method can be extended to a variety of the polymerizable monomer system, can be prepared a variety of different composition, anisotropic polymer microspheres morphology varied. Therefore, using Cerberus emulsion template preparation of anisotropic particles with morphology, diversity, wide range of particle size, mass production advantage, is expected to expand the application of.3. anisotropic particles in various fields of magnetic Fe_2O_3 particles selectively solubilization in ETPTA/HFE 7200 (Perfluorobutane ethyl ether) /SO (silicone oil) /0.4%F127_ (AQ) Cerberus droplet system, the Cerberus emulsion has magnetic control of magnetic response. The particle concentration, influence of magnetic particles on the stability of emulsion and morphology; by changing the Cerberus emulsion droplets in the phase composition, morphology and magnetic properties of Cerberus emulsion magnetic response. Using a vibrating sample magnetometer on magnetic properties and magnetic response of the emulsion magnetic emulsion. The results show that the doped dynamic stability of magnetic particles has higher Cerberus, selective solubilization of Fe203 particles in ETPTA does not affect the morphology of Cerberus droplet. In the magnetic field induced can achieve directional movement of Cerberus emulsion. In addition, the anisotropy of Cerberus droplets in the magnetic field can be achieved under rotation and orientation.

【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O648.23

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