Sulfonated Styrene - Maleic Anhydride Copolymer Synthesis And Its Performance

In the thesis, the synthesis and antiscale performance of SSMA are studied.Two reaction systems are used to synthesize the polymer: KPS system and H₂O₂ system. Comparing with the systems, the H₂O₂ system are adopted.The water soluble polymers are prepared by solution polymerization techniques with water as solvent, H₂O₂ as initiator, FeNH₄(SO₄)₂ as catalyst. The monomers are maleic anhydride (MA), sodium p-styrene sulfonate (SS) and crylic acid acrylate (HPA). Then such two inhibitors are obtained as SSMA and SSMA-HPA. The effects of the monomer ratio, initiator amount, catalyst dosage, reaction temperature and reaction time on the synthesis are investigated. The optimum synthesis conditions are built by the orthogonal method. The macromleculars are characterized by TR spectra and TG..The results of static scale control experiment show that the performance of SSMA and SSMA-HPA are good at inhibiting the depositionCaCO₃,CaSO₄,Zn²⁺ salt. The CaCO₃ scale inhibitory rate of the polymer SSMA and SSMA-HPA are respectively 61.53% and 69.57 %. The CaSO4 scale inhibitory rate of the polymer SSMA and SSMA-HPA are respectively 56.21% and 55.16 %. The Zn²⁺ salt scale inhibitory rate of the polymer SSMA and SSMA-HPA are respectively 52.28 %and 74.66 %.By SEM and XRD, the change of the dirty shape happens since the polymers present, and it shows that the polymer scale inhibitors have good performance, it can be used in the water treatment very well.