Preparation And Application Of Fluorinated Functional Emulsion

Using methyl acrylate(MA) homopolymer as core layer, trifluoroethyl methacrylate(TFEMA) homopolymer prepared for the shell of the core-shell emulsion, the Tg of theShell layer is higher, however, the nucleation layer is lower. Then the best ingredients andthe best reaction time of the experiment was researched by experimenting, Scanningelectron microscopy(SEM), dynamic light scattering(LPS), transmission electronmicroscopy(TEM) and differential scanning calorimetry(DSC), the main analytical tools tocharacterize polymer emulsion. This experimentally determined surface morphology andstructure of the latex particles, provide theoretical and practical guidance for the core-shellpolymerization for the future.In this paper, using homopolymer of methyl methacrylate(MMA) as a nucleation layer,TFEMA and butyl acrylate(BA) copolymer for the shell was prepared a core-shell emulsion,the Tg of the Shell layer is lower, however, the nucleation layer is higher. And it is preparedby adjusting the amount of the BA makes the emulsion can be filmed forming at roomtemperature, and the contact angles of the formed film was significantly greater than theangle of the ordinary emulsion film, the ordinary emulsion obtained by the same ingredientsystem. TEM, DLS, SEM, DSC and other testing methods to determine the preparedemulsion obvious core-shell structure. As the particle design and introduction of apolymerizable emulsifier (Allyloxy nonylphenol alcohol polyoxyethylene (10) ether sulfate(DNS-86)) in the test, so that the film and the coating prepared by this emulsion showsgood hydrophobicity.In this article we prepare a chain transfer agent dithioesters eumyl dithiobenzoatein(CDB) according to a certain synthetic process. Its purity is characterized by highperformance liquid chromatography, using NMR and FT-IR to sure its structuralcharacterization. Determine the reagent is prepared, a chain transfer agent, and its puritycan be used a chain transfer agent to control reversible addition-fragmentation chaintransfer polymerization(RAFT).Using the Synthesized reagent as a chain transfer agent, RAFT polymerization iscarried out by miniemulsion method, then using DLS, DSC, TEM, SEM and other testing methods to sure the obtained latex particles emulsion have core-shell structure. And thesurface morphology of the prepared particles were characterized. The molecular weight ofthe obtained polymer is determined by GPC to determine this experiment successed insynthesizing of a block polymer. And we study the self-assembled behavior of the blockpolymer.