Chemometrics was employed to study the effect of various reaction conditions on the graft copolymerization of acrylamide (AM) and diallyl dimethylammonium chloride (DADMAC) onto guar gum using the cerous sulfate and potassium persulfate complex initiation system. A two level full factorial design was used to study the effect of reaction parameters on percentage grafting (%G) and monomer conversion (%MC). Synthesized polymers were characterized using Fourier transform infrared spectroscopy (FTIR), ¹H-NMR (nuclear magnetic resonance spectroscopy), and ¹³C-NMR and also were analyzed for differences in intrinsic viscosity and charge incurred with changing reaction conditions. The concentration of AM was observed to have the greater effect on %grafting. Interaction effects between the reaction temperature and concentration of AM were also found to be important. Under the reaction condition studied, the highest grafting (%G) was obtained for polymer 1 (0.7M AM concentration, 60°C reaction temperature, and 1M acid concentration).

Item Type:	Refereed Article
Keywords:	guar gum, graft copolymers, chemometrics, main effects and interactions effects, radical polymerization, NMR
Research Division:	Chemical Sciences
Research Group:	Physical chemistry
Research Field:	Colloid and surface chemistry
Objective Division:	Manufacturing
Objective Group:	Wood, wood products and paper
Objective Field:	Paper products and pulp
UTAS Author:	Agarwal, V (Mr Vipul Agarwal)
UTAS Author:	McLean, D (Mr Douglas McLean)
UTAS Author:	Horne, J (Mr John Horne)
UTAS Author:	Stack, K (Dr Karen Stack)
ID Code:	81751
Year Published:	2013
Web of Science® Times Cited:	9
Deposited By:	Chemistry
Deposited On:	2013-01-07
Last Modified:	2017-10-24
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