Synthesis, Characteristics And Adsorption Properties Of Polyphenylene Sulfide Based Strong Acid Ion Exchange Fiber

As a novel adsorption and separation material, the ion exchange fiber (IEF)possesses excellent adsorption-desorption velocity, osmotic stability and varioustexture forms, which has played an important role in the industrial waste watertreatment, gas cleaning, purification products, etc. Of these IEF materials, strongacid IEF are conventionally obtained via complicated radiation process from60Cogamma rays or other high-energy electron irradiation facility, which has seriouslylimited its large-scale industrial production.A novel strong acid IEF (HO3S-BC-XDC-PPS) was prepared via crosslinkingand grafting copolymerization of1,4-bischloromenthyl benzene (XDC), benzylchloride (BC) on commercialized polyphenylene sulfide (PPS) matrix, as well asfollowing sulfonation reaction. The effects of reaction temperature and time,sulfonation reagent and the volume of solvent were investigated. The experimentresults showed that the volume of solvent had great influence on grafting ratio ofPPS fiber, the exchange capacity of sulfonated fiber increased with the increase ofgrafting ratio, the max exchange capacity of sulfonated fiber was3.71mmol/g. Thephysical-chemical structure and property of fibers were characterized and measuredwith FT-IR, SEM, TG-DTG, element analysis and chemical titration, respectively.The adsorption performance of HO3S-BC-XDC-PPS fiber on Cu2+and anilinewere investigated. The adsorption process for Cu2+is spontaneous and endothermic.The adsorption capacity increases with increasing pH, while the pH vary during2~5.The adsorption equilibrium could be obtained in40min. The models fitting showedthat liquid film diffusion was the rate controlling step. The maximum adsorptioncapacity of the fiber for aniline was up to375mg/g, when the initial concentrationwas700mg/L and the adsorption temperature was40℃. The adsorption equilibriumcould be obtained in15min. The exchange capacity and desorption rate were notdecreased after five adsorption-desorption cycles.