Preparation And Properties Of Polyphenylene Sulfide Based Multifunctional Composites

As a part of the natural world,bacteria influence every aspect of the geosphere.These microorganisms not only play an irreplaceable role in the health of human life,but also play a vital role in maintaining the entire ecological cycle system.However,while bacteria co-exist with other organisms,they also pose a number of challenges for us.The fight against microbial contamination has been one of the hot topics in the scientific community,and antimicrobial materials have been developed rapidly and are widely used as a result.Polyphenylene sulfide（PPS）is an excellent polymeric material that is chemically stable,does not change significantly when compounded with other materials,and has shown an increasing trend in manufacturing applications.Therefore,in order to explore the value of its application and expand the field of application,the subject of PPS as a research material,the addition of antibacterial materials and its phase composite successfully prepared PPS multifunctional composites,the main content of the paper is as follows:1.Spherical silver phosphate（Ag₃PO₄）nanoparticles were synthesized from silver nitrate（Ag NO₃）as raw material,and the composite filler was prepared by physical mixing of Ag₃PO₄ and silica（SiO₂）.PPS composite coating with hydrophobic and antibacterial properties was prepared by spraying calcination with PPS and composite filler.The hydrophobic Angle of the composite coating can reach 139.7°,which has good self-cleaning performance.In the electrochemical test,the corrosion current of the coating was reduced by four orders of magnitude compared with the base material,and the simulated static erosion test with salt spray chamber also showed that the material could effectively inhibit the corrosion of iron flakes and its durability was significantly improved.The composite coating was effective in inhibiting bacterial colonisation in E.coli and S.aureus plate tests with long term properties2.SiO₂ is not only a good filler,but also as an antibacterial carrier.Imidazole derivatives were combined with SiO₂ particles to obtain inorganic filler antibacterial agent,which was mixed with PPS to prepare antibacterial composite coating by spraying,and solidified on the substrate surface in the form of high-temperature calcination.After testing and research,the antimicrobial coating had good antimicrobial and wear resistance properties,and adhesion tests also showed that the coating would not come off easily.And the plate experiment fully showed that the reproduction process of active bacteria was inhibited.Moreover,the proportionally optimized material had a high impedance and avoids serious corrosion of the substrate.After hydrophobic modification of PDMS,the WCA of composite coating could reach more than 130°.3.Polyvinyl alcohol（PVA）and chitosan quaternary ammonium salt（HACC）were combined with PPS,and the antibacterial composite gel with tensile properties was prepared by physical blending.The physical cross-linking of PVA and HACC was used to build the basic skeleton structure,while PPS could fill the large pore structure.It was shown that when a certain amount of PPS is added,the antimicrobial gel not only had the ability to resist deformation,but also was able to lift a 1.8 kg reactor,and PVA and HACC gave PPS elasticity and tensile properties and improved mechanical properties.Swelling test and thermogravimetric test showed that the antibacterial gel had good swelling performance and thermal stability.The antimicrobial ability was tested using E.coli and Staphylococcus aureus,and the material was able to destroy bacteria by destroying cell membranes by contact sterilization,avoiding environmental pollution from the release of antimicrobial agents.