@article {45475,
	title = {Flocculation of kaolin from aqueous suspension using low dosages of acrylamide-based cationic flocculants},
	journal = {Journal of Applied Polymer Science},
	volume = {136},
	year = {2019},
	month = {APR},
	pages = {Article Number: 47286},
	type = {Article},
	abstract = {<p>Flocculation of kaolin from aqueous streams has become very important in view of its wide range of applications. In this work, cationic flocculants based on copolymers of acrylamide (AM) and 3-acrylamidopropyltrimethylammonium chloride (APTMAC) were synthesized with two different mole ratios of monomers, 80 mol \% of AM (CP-8020) and 40 mol \% of AM (CP-4060). The chemical structures of copolymers were confirmed by H-1 and carbon-13 nuclear magnetic resonance (C-13 NMR) spectroscopy. The molecular weight (MW) and zeta potential of the copolymers were determined. High MW was obtained for copolymer with high content of AM (CP-8020) and high zeta potential was observed for copolymer with high content of APTMAC (CP-4060). Flocculation of kaolin suspension was performed using both CP-8020 and CP-4060 and the flocculation was correlated to the zeta potential and MW of the copolymers. The optimum dosages of flocculants were determined. The mechanism of flocculation was discussed in terms of charge neutralization and bridging. The flocs of kaolin were characterized in terms of moisture content and size. To the best of our knowledge, this copolymer system was used for the first time for kaolin flocculation and found out to be efficient. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47286.</p>},
	keywords = {copolymers, hydrophilic polymers, polyelectrolytes},
	issn = {0021-8995},
	doi = {10.1002/app.47286},
	author = {Suresha, P. R. and Badiger, Manohar V.}
}
@article {49864,
	title = {Insight Into the Influence of Salinity on Flow and Flocculation Behavior of Acrylamide-Based Cationic Polyelectrolyte},
	journal = {Journal of Applied Polymer Science},
	volume = {143},
	year = {2026},
	month = {MAR},
	type = {Article},
	abstract = {<p>
	The viscometric behavior of aqueous solutions of acrylamide and acrylamidopropyl trimethylammonium chloride copolymers (AM-co-APTMAC) with varying cationic content under different salinity conditions was studied. Viscometric measurements were employed to determine intrinsic viscosity and quantify the influence of electrostatic interactions on chain conformation. Rheology experiments were performed to probe dynamic flow behavior under shear to obtain insights into polyelectrolyte viscoelastic properties under conditions mimicking industrial processes. Viscometric and rheology data analysis is augmented with insights from NMR relaxation and pulsed field gradient NMR diffusion experiments. Further, flocculation of kaolin suspensions was studied using aqueous solutions of AM-co-APTMAC copolymers with different charge fractions in the presence and absence of salt. The physicochemical insights on the behavior of AM-co-APTMAC polyelectrolytes in solution from this study could be relevant in practical applications, such as plants that use seawater or in cases where the ionic strength of suspensions is high due to salinity in the medium.</p>
},
	keywords = {copolymers, polyelectrolytes, structure property relationships, theory and modeling},
	issn = {0021-8995},
	doi = {10.1002/app.70219},
	author = {Ranganath, Suresha P. and Kurian, Rachna and Torris, Arun and Khairnar, Ajay and Ravindranathan, Sapna and Rajamohanan, P. R. and Badiger, Manohar V. and Wolf, Bernhard A.}
}
