Synthesis and flocculation property in dye solutions of β-cyclodextrin–acrylic acid–[2-(Acryloyloxy)ethyl] trimethyl ammonium chloride copolymer

• Published in: Carbohydrate polymers Vol. 87; no. 3; pp. 1956 - 1962
• Main Authors: Tian, Xiuzhi, Ren, Erhui, Wang, Junhua, Zou, Jinlei, Tao, Yong, Wang, Shugen, Jiang, Xue
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 14.02.2012; Elsevier
• Subjects: acrylic acid; adsorption; Applied sciences; aqueous solutions; Cationic; composite polymers; Decolorization; esterification; Exact sciences and technology; Flocculant; flocculation; Fourier transform infrared spectroscopy; Natural polymers; nuclear magnetic resonance spectroscopy; Physicochemistry of polymers; poly (β-CD–AA–DMC); reactive dyes; scanning electron microscopy; Starch and polysaccharides; thermal stability; Decolorization; Cationic; Flocculant; poly (β-CD–AA–DMC); Acrylic acid copolymer; Organic dye; Molecular structure; Quaternary ammonium copolymer; Crosslinking; Experimental study; Thermal stability; Crosslinked copolymer; Cyclodextrin; Flocculation reagent; Ionic strength; Flocculation; Morphology; Preparation; poly (β-CD-AA-DMC); pH; Oside polymer; Acrylate copolymer; Aqueous solution
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2011.10.003

In aqueous solution a cationic copolymer, poly (β-CD–AA–DMC) was synthesized via free radical copolymerization of acrylic acid (AA) esterified β-CD (β-CD–AA), and a cationic monomer [2-(Acryloyloxy)ethyl] trimethyl ammonium chloride (DMC). The copolymer's structure, morphology and thermal stability were demonstrated by FT-IR, 1H NMR, SEM and TGA analysis. The flocculation properties of the copolymer were evaluated by the decolorization solutions of two reactive dyes using a jar test method. The decolorization efficiency is influenced by both the nature of the anionic dyes and the pH of the initial dye solution. Electrostatic adsorption played a more important role in flocculation of dyes than bridging of the polymer. Moreover, the inorganic salt decreased the efficiency of color removal.