期刊
CARBOHYDRATE POLYMERS
卷 127, 期 -, 页码 275-281出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.03.044
关键词
Amylopectin; Amphoteric polymers; Cationic polymers; Polymer beads; Flocculation; Dye removal
资金
- UGC
- DST, New Delhi, Government of India [DST/TM/WTI/2K11/274 (G)]
The synthesis of novel cationic flocculants based on amylopectin (AP), acrylamide (AM) and (3-acrylamidopropyl) trimethylammonium chloride (ATMAC) were done by free radical polymerization using ammonium persulphate (APS) as an initiator. Three different grades of novel cationic flocculants (AP-g-C 1 to AP-g-C 3) were synthesized by varying the proportion of acrylamide and (3-acrylamidopropyl) trimethylammonium chloride monomers. Through the hydrolysis of these flocculants, in presence of NaOH, three different grades of amphoteric polymers (AP-AT-C 1 to AP-AT-C 3) were synthesized. The synthesized polymers were characterized by various methods, namely, infrared spectroscopy, NMR spectroscopy, thermal analysis, viscosity measurement, scanning electron microscopy and X-ray diffractometry. The flocculation performance of AP-g-C and AP-AT-C were studied in kaolin suspension using jar test and settling test methods at neutral pH. Dye (Methylene blue) removal tests were performed using polymer beads and analysed by UV-vis spectroscopy. (C) 2015 Elsevier Ltd. All rights reserved.
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