Abu-Sharkh, Basel

Ali, S. A.

Alnaizy, R. S.

Sayem, M. M.

Umar, Yunusa

King Fahd University of Petroleum and Minerals

Influence of hydrophobe content and salt concentration on dilute solution behaviour of 
hydrophobically modified ionic polymers from diallylammonium salts/sulfur dioxide 
cyclocopolymerization: Light scattering and fluorescence spectroscopy.       
 
Mozumder, M. Sayem; Alnaizy, R. S.; Umar, Yunusa; Ali, Sk. Asrof; Abu-Sharkh, B. F.    
 
Department of Chemical Engineering,  King Fahd University of Petroleum & Minerals,  Dhahran,  
Saudi Arabia.     
 
European Polymer Journal  (2005),  41(10),  2224-2231.   
 
 
Abstract 
 
Novel hydrophobically modified polyelectrolytes were synthesized using the cyclocopolymn. of 
sulfur dioxide, N,N-diallyl-N-carboethoxymethylammonium chloride and the hydrophobic 
monomer N,N-diallyl-N-octadecylammonium chloride.  Aggregation of these polymers in aq. 
solns. was characterized in the dil. regime by static light scattering and fluorescence 
spectroscopy as a function of hydrophobe content and NaCl concn.  Copolymers were obsd. to 
assoc. at very low concns. (0.005 wt%).  The copolymer is capable of assocg. at this very low 
polymer concn. because of the extended length of the hydrophobic monomer (C18) that can 
reach far enough from the backbone to avoid electrostatic repulsion.  Aggregation of the polymers 
increased with increasing hydrophobe content.  Upon addn. of salt, the apparent mol. wt. of 
polymer aggregates decreased as a result of neutralization of the charges.  At high salt concns., 
the size of the polymer aggregates was obsd. to increase again as a result of increased polarity 
of the solvent that resulted in more hydrophobic assocn. 
 


Influence of hydrophobe content and salt concentration on dilute solution behaviour of hydrophobically modified ionic polymers from diallylammonium salts/sulfur dioxide cyclocopolymerization: Light scattering and fluorescence spectroscopy

https://eprints.kfupm.edu.sa/id/eprint/9246/1/Influence_of_hydrophobe_content_and_salt_concentration_on_dilute_solution_behaviour_of_hydrophobically_modified_ionic_polymers.pdf

Influence of hydrophobe content and salt concentration on dilute solution behaviour of hydrophobically modified ionic polymers from diallylammonium salts/sulfur dioxide cyclocopolymerization: Light scattering and fluorescence spectroscopy

Abstract

Similar works

Full text

Available Versions

King Fahd University of Petroleum and Minerals