Document Detail

Cationic comb polymer superdispersants for colloidal silica suspensions.
MedLine Citation:
PMID:  19400573     Owner:  NLM     Status:  MEDLINE    
We investigate the ability of a cationic comb polymer composed of a poly(trimethylammonium iodide ethyl methacrylate) (PTMAM) backbone and uncharged poly(ethylene glycol) (PEG) teeth to stabilize aqueous silica suspensions of varying ionic strength and pH. Both PTMAM-g-PEG and its homopolymer backbone, PTMAM, are synthesized via reversible addition-fragmentation chain transfer followed by quaternization of the pendant amine groups with methyl iodide. Through a combination of polymer adsorption, zeta potential, and sedimentation measurements as well as confocal imaging of sediment structures, we find that PTMAM-g-PEG imparts stability over a broad range of solution conditions, where pure PTMAM fails.
Summer K Rhodes; Robert H Lambeth; Jaime Gonzales; Jeffrey S Moore; Jennifer A Lewis
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  25     ISSN:  0743-7463     ISO Abbreviation:  Langmuir     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-09     Completed Date:  2009-08-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6787-92     Citation Subset:  IM    
Materials Science and Engineering Department, Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA.
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MeSH Terms
Polymers / chemistry*
Silicon Dioxide / chemistry*
Reg. No./Substance:
0/Cations; 0/Colloids; 0/Polymers; 7631-86-9/Silicon Dioxide

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