| With the development of the times, people are increasingly demandinghigh-performance materials, the ordinary common plastics can not meet theapplication of high-end products. Thus, special engineering plastics are widelyresearch and development by scientists, after years of efforts,develop into a series ofexcellent structure, strong heat-resistant engineering plastics, the one is PES.PES is known as the first comprehensive performance of a variety of excellentquality and has been one of the few specialty plastics applications. It has heatresistance, hydrolysis resistance, impact resistance, creep resistance, non-toxic, andchemical resistance, and many excellent properties, Especially noteworthy,it has theadcantanges that can have continuous use at high temperatures and rapid temperaturechanges in the environment can still maintain performance. PES has been widely usedin a number of thin wall injections molding of complex materials and highly filledcomposite materials. In the electronic, electrical, aerospace, aviation, medical,machinery has been a lot of use. Since PES has properties that strong adhesion withiron, aluminum and other metals and high hardness of the coating，So PES can beused as coatings applied to chemical corrosion resistance, non-stick coatingequipment and other fields.Polyphosphazenes are a versatile class of hybrid organic-inorganic materials withremarkable properties and multiple applications. More significantly, the surface of thispolymer can be modified by interfacial reactions to link functional groups and biologically active molecules to the interface, this is especially in the biomedical fieldowing to their biodegradability and biocompatibility. Previously, ionicallycross-linked polyphosphazene hydrogel micro-nano spheres were prepared via ioniccomplexation for protein encapsulation. It has been reported that the preparation ofpolymorphic poly[cyclotriphosphazene-co-(4,4’-sulfonyldiphenol)] nanotubes via anin situ template approach and silver nanocables wrapped with hybridpoly[cyclotriphosphazene-co-(4,4’-sulfonyldiphenol)] via a hard-template approachhave been accomplished. All these results indicated that polyphosphazene possessesspecial potential in the fabrication of molecular-level inorganic-organic hybrid micro-and nanoscaled materials. Therefore, the study on the functionalization of hybridinorganic-organic materials appears to be extremely necessary and may offer newopportunities for their further applications. However, the functionalizations of thosematerials have not been extensively studied.Polyphosphazene is a new class of inorganic-organic hybrid polymer with themain chain of alternating phosphorus and nitrogen atoms and the side chains for thedifferent substituents of these polymers. It will be inorganic, organic moleculesclosely combining the main chain. As a very good supple and molecular design, it’sone of the better materials for the preparation of superhydrophobic surfaces. Singh etal. using electrospinning method, by changing the spinning solvent polaritypreparation diameter from80nm to1.4μm poly(bis-2,2,2-trifluoroethoxyphosphazene)nanofibers spin-coated with the polymer membrane. Non-woven fiber membranesystem, electro spinning has an excellent super-hydrophobicity, increasing the watercontact angle55o, and wihe the big influence of fiber diameter to the contact angle,135o-159owithin fluctuations, studies have shown that super-hydrophobic non-wovenfiber membrane is the result of the cooperation of the fluorinated surface andnano-fiber structure. Electro spinning method is only suitable for high molecularweight linear polyphosphazene, however, the complicated preparation process.Hexachlorocyclohexane (HCCP) as one of the ring phosphazene is replaced by thethree-P=N-unit and six chlorine base consisting of cyclic inorganic compounds, thehigh activity of these chlorine substituent for building with different functionalpolymers offers the possibility, with the structural conditions of the preparation ofsuper hydrophobic materials and potential price advantage.The content of this thesis is to use precipitation polymerization one-step synthesisof new fluorinated poly polyphosphazene micro-nano sphere, studing reaction conditions the impact of the law of polyphosphazenes micro-nano sphere morphologyand particle size; by the micro-nano ball and polyether sulfone blending, studingsurface morphology and properties, the discussion microsphere content ofpolyphosphazenes infulenceing on the material properties of polyethersulfone.The paper is divided into two parts, one is synthesis and characterization of amonomer and novel fluorinated poly polyphosphazene micro-nano6FPZF sphere; theother one is preparation and characterization of6FPZF/polyether sulfone composites.Part I: first with the easy-to-buy ammonium chloride and phosphorus pentachloridereaction, synthesis of cyclic six chlorine trimeric phosphazene (HCCP), werecharacterized by infrared and DSC testing its structure. After proving its structure, it isprepared by hexafluoro bisphenol A and advance the good of this group-specific (3,5-bis (trifluoromethyl) phenyl) hydroquinone (6F-PH), precipitation polymerization,triethylamine (TEA) as acid binding agent, acetonitrile as solvent, without externalreaction stabilizer and surfactant conditions, the successful preparation of fluorinatedfull cross-linking of polyphosphazenes-aromatic ethers and micro-nano speres. FTIR,DSC and transmission electron microscopy to determine their structure andmorphology, and in-depth study of the impact of microspheres morphology, the sizeof the main factors, such as acid binding agent concentration, monomer concentrationand molar ratio of monomer. The results show that: to reduce the acid bindingcapacity of the acid binding agent, can effectively reduce the polymerization rate, sothat the polymerization process, the relatively small number of initial nucleation,growth time is longer, thus forming a larger particle size products; the concentrationof the monomer helps to increase the diameter of the microspheres; to improve theratio of the two functional groups of monomers, the morphology of the obtainedpolymer microspheres is uniform.Part II: the PEES oligomers were preparation with diclofenac and p-methoxyphenol,the structure of PEES oligomers were characterized by IR and NMR. Theprecipitation polymerization was use PEES oligomers and HCCP to preparation PEESpolyphosphazene microspheres. The structure and morphology of PEESpolyphosphazene microspheres were characterized by FTIR, SEM and TGA. Theresults show that the PEES of polyphosphazenes microspheres with smooth surfaceand uniform particle size, average particle size is0.5μm; it has good thermal stability,5%weight loss temperature of434℃. Part III: using a solution blending with polyethersulfone and polyphosphazenemicrosphere which content was3%,5%,7%and10%of the polyphosphazenemicrospheres/PES composite. On the morphology of the blends, tensile properties,thermal properties, and hydrophobic properties were tested. Polyphosphazenes/PEScomposite morphology were characterized by SEM of polyphosphazenes microspherethe polyethersulfone system compatibility is not good, and the microspheres on themembrane surface enrichment; tensile strength and elongation at break rate due to thejoin of the polyphosphazene insoluble microspheres decreases; Tg ofpolyphosphazenes microspheres increase the tendency to increase the amount ofweight loss temperature is gradually reduced; polyphosphazene microspheres of lowsurface energy to join can improve the hydrophobic properties of the material, but toomuch of polyphosphazene microspheres will be reunited in the surface, so that thehydrophobic performance. The PEES polyphosphazenes microspheres in the PEScomposite have good dispersion, when the PEES polyphosphazenes microspherescontent10%, the system remains transparent. This phenomenon is due to the similarstructure of two chains. With the increasing content of PEES polyphosphazenesmicrosphere, the increasing reunion in the PEES polyphosphazenes microspheres/PES composite membrane was emergeing. |
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