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Abstract

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, 60C reaction temperature, and 1M acid concentration).

Item Type:	Article
Authors/Creators:	Agarwal, V and McLean, DS and Horne, J and Richardson, DE
Keywords:	guar gum; graft copolymers; chemometrics, main effects and interactions effects; radical polymerization; NMR
Journal or Publication Title:	Journal of Applied Polymer Science
DOI / ID Number:	https://doi.org/10.1002/app.37716
Item Statistics:	View statistics for this item

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