Surfactant properties of poly(dimethylsiloxane)-containing block copolymers from living radical polymerization
UNSPECIFIED (2003) Surfactant properties of poly(dimethylsiloxane)-containing block copolymers from living radical polymerization. In: Symposium on Synthesis and Properties of Silicones and Silicone-Modified Materials held at the 221st National Meeting of the American-Chemical-Society, SAN DIEGO, CALIFORNIA, APR 01-05, 2001. Published in: SYNTHESIS AND PROPERTIES OF SILICONES AND SILICONE-MODIFIED MATERIALS, 838 pp. 260-272.Full text not available from this repository.
Transition metal mediated living radical polymerization has been utilized to prepare amphiphilic PDMS containing block copolymers. The PDMS based macroinitiator has been synthesized for allow the polymerization of 2-dimethylaminoethyl methacrylate (DMAEMA) monomers with Cu(I)Br/npropyl-2-pyridinalmethanimine complex. Well-defined block copolymers have been prepared with different molecular weights of DMAEMA block. Dynamic surface tension of aqueous solutions of poly(DMAEMA-DMSDMAEMA) were investigated at different pH. These block copolymers were found to be highly surface active in aqueous media, particularly in basic pH where the charge density (degree of protonation) of the DMAEMA is low. An improvement in aggregation formation is established by the addition of salt (NaCl) in the aqueous solution. Aggregates formed with these polymers have a large hydrodynamic diameter.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||Q Science > QD Chemistry|
|Series Name:||ACS SYMPOSIUM SERIES|
|Journal or Publication Title:||SYNTHESIS AND PROPERTIES OF SILICONES AND SILICONE-MODIFIED MATERIALS|
|Publisher:||AMER CHEMICAL SOC|
|Editor:||Clarson, SJ and Fitzgerald, JJ and Owen, MJ and Smith, D and VanDyke, ME|
|Number of Pages:||13|
|Page Range:||pp. 260-272|
|Title of Event:||Symposium on Synthesis and Properties of Silicones and Silicone-Modified Materials held at the 221st National Meeting of the American-Chemical-Society|
|Location of Event:||SAN DIEGO, CALIFORNIA|
|Date(s) of Event:||APR 01-05, 2001|
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