疏水缔合型阳离子聚丙烯酰胺的合成及絮凝性能

doi:10.13218/j.cnki.csdc.2017.07.004

Abstract

Abstract: With trifluoroethyl methacrylate (TFEMA) as the hydrophobic monomer,acrylamide (AM) as main monomer,methacryloxyethyltrimethylammonium chloride (DMC) as cationic monomer,ammonium persulfate and sodium bisulfite as composite initiator,the product copolymer P(AM-DMC-TFEMA) was synthesized using free radical micellar copolymerization method.Effects of reaction temperature,initiator dosage,mass fraction of total monomers and reaction time on the yield and level of cationization of P(AM-DMC-TFEMA) were examined.Better process conditions are suggested as following:reaction temperature,65 ℃;dosage of initiator,2% of total mass of the monomers;mass fraction of total monomers,26%;reaction time,3 h.The structure of the product was characterized by infrared spectroscopy (FT-IR),¹H nuclear magnetic resonance (¹H NMR) and environmental scanning electron microscopy (ESEM).Meanwhile,the flocculation effect of the product P(AM-DMC-TFEMA) on diatomaceous earth suspension was also examined.Results show that P(AM-DMC-TFEMA) displays good flocculation effect on diatomaceous earth,the flocculation time is only 20 s,and the ratio of the clear copolymer product liquid achieves 97.31%.

Key words: cationic polyacrylamide, hydrophobic modification, free radical micellar copolymerization, flocculation

CLC Number:

TQ314.253

GUO Rui, WANG Ying-yue, GUO Yu. Synthesis and flocculation performance of hydrophobically associating cationic polyacrylamide[J].China Surfactant Detergent & Cosmetics, 2017, 47(7): 374-378.

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Synthesis and flocculation performance of hydrophobically associating cationic polyacrylamide

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