Department of Applied Chemistry, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India.
Int J Biol Macromol. 2011 Nov 1;49(4):591-8. doi: 10.1016/j.ijbiomac.2011.06.015. Epub 2011 Jun 24.
Grafting of polyacrylamide (PAM) chains was performed onto the backbone of Agar by microwave assisted method, using microwave radiation in synergism with ceric ammonium nitrate (CAN) as the chemical free radical initiator. The intended grafting of the PAM chains were confirmed through intrinsic viscosity study, FTIR spectroscopy and elemental analysis (C, H, N, O & S). Further characterization of the grafted product was done in form of SEM morphology and TGA study. Flocculation efficacy of the synthesized graft copolymers was studied in kaolin suspension, through 'Jar test' procedure. Further, flocculation efficacy of the 'best grade' (as determined by 'jar test' in kaolin suspension) in wastewater was studied for possible application in reduction of pollutant load of wastewater.
采用微波辅助法，通过微波辐射与硝酸铈铵（CAN）协同作用，将聚丙烯酰胺（PAM）链接枝到琼脂主链上，作为无化学自由基引发剂。通过特性粘度研究、傅里叶变换红外光谱和元素分析（C、H、N、O 和 S）证实了 PAM 链的接枝。通过扫描电子显微镜形貌和热重分析进一步对接枝产物进行了表征。通过“搅拌试验”程序，在高岭土悬浮液中研究了合成接枝共聚物的絮凝效果。此外，还研究了“最佳等级”（通过高岭土悬浮液中的“搅拌试验”确定）在废水中的絮凝效果，以期应用于降低废水中的污染物负荷。
