Microwave assisted synthesis of polyacrylamide grafted dextrin (Dxt-g-PAM) Development and application of a novel polymeric flocculant

被引：57
作者：
Pal, Sagar [1 ]
Nasim, T. [1 ]
Patra, A. [1 ]
Ghosh, S. [2 ]
Panda, A. B. [3 ]
机构：
[1] Indian Sch Mines, Dept Appl Chem, Polymer Chem Lab, Dhanbad 826004, Bihar, India
[2] Birla Inst Technol, Dept Appl Chem, Ranchi 835215, Jharkhand, India
[3] Cent Salt & Marine Chem Res Inst, Discipline Inorgan Mat & Catalysis, Bhavnagar 364021, Gujarat, India
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2010年 / 47卷 / 05期
关键词：
Dextrin; Flocculation; Graft copolymer; Microwave; Settling velocity; INITIATED SYNTHESIS; STARCH;
D O I：
10.1016/j.ijbiomac.2010.08.009
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
An efficient polymeric flocculant was synthesized by microwave assisted grafting of polyacrylamide to dextrin By varying the reaction conditions various grades of graft copolymers were synthesized to obtain the optimized one Viscometry elemental analysis FTIR spectroscopy C-13 NMR spectroscopy determination of molecular weight and radius of gyration using SLS analysis thermal analysis and SEM analysis were employed to confirm that polyacrylamide has been grafted onto the dextrin backbone The flocculation efficiency of the grafted products in kaolin suspension was dependent on the molecular weight radius of gyration and length of the grafted polyacrylamide chains The flocculant obtained by microwave assisted grafting method was superior to dextrin and polyacrylamide-based commercial flocculant (Rishfloc 226 LV) in flocculation tests (C) 2010 Elsevier B V All rights reserved
引用
收藏
页码：623 / 631
页数：9
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