Construction Of Superhydrophobic Interfaces Of Amphiphilic Copolymer By Electrospinning And Principal Component Analysis Of Polymer Materials

Superhydrophobicity of a material is mainly dependent on the synergistic interplay of the hydrophobic property of a matter surface and its surface morphology.Since fluoropolymer has excellent hydrophobic properties,the key to obtain a superhydrophobic material is to design and synthesize new fluorine-containing polymer,and combining with the technology of building micro-structure of the surface.Based on the requirements of the composition and the morphology of superhydrophobic film materials,this thesis is focused on the design and synthesis of amphiphilic polymer compounds containing perfluoroalkyl hydrophobic monomers and polyoxyethylene ether hydrophilic monomers,and the use of the electrospinning technique to build the coatings with different interfacial microstructures.This thesis also studied the relationship between the polymer composition and the surface structure with surface hydrophobic properties.On the other hand,fluorine-containing polymers are widely used in daily life and industry,and the fluorine-containing components have been the major concern with respect to their environmental and ecological issues.Setup of principal component analysis has the important implications in the application of the fluorine-containing polymers.The main contents of this thesis are as follows:1.The thesis firstly presents an overview on the general mechanism of hydrophobicity of fluorinated polymers and the basic prerequisites of superhydrophobicity of a surface,indicates the develois also introduced.The significance of principal component analysis has been briefly pment state and trend of the hydrophobic materials.The electrospinning technique summarized.2.Five monomers,poly(ethylene glycol)methacrylate(DG),dodecafluoroheptyl(DF)or hexafluoropropylene trimer methacrylate(TF),methyl methacrylate(MA),and hydroxyethyl methacrylate(MG),were combined to synthesize three categories of fluorinated amphiphilic polymers via the free radical solution polymerization reaction:DG-co-DF-co-MA,DG-co-TF-co-MA,and MG-co-TF-co-MA.Copolymers.These amphiphilic copolymers were characterized by 1H NNMR,FTIR and simultaneous thermal analysis.These The electrospinning technique was used for the construction of the surface architecture of the polymer coatings.Under optimized conditions,the three sets of copolymers were electrospun on glass slides and eleven surfaces with different topographies were constructed.The hydrophobicity?morphology and surface composition of the films were characterized with video contact angle(CA)?scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).We obtan the best hydrophobic polymer film.The anti-protein fouling performances of these film surfaces were also qualitatively and quantitativly characterized to determine the best effect.3.The principal component analysis of a fluoropolymer emulsion used as the textile finishing agent was conducted.The analytic method contained the chemical reactions and extraction and fraction,in combination with the instrumental analysis techniques such as infrared spectroscopy(FTIR),nuclear magnetic resonance spectroscopy(1H NMR),mass spectrometry(GC-MS and LC-MS),etc.The principal components and adjuvents were obtained.