Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 16, 2011
Previous Article Next Article

Tailoring the morphology of branched poly(N-isopropylacrylamide)via self-condensing atom-transfer radical copolymerization and its unique self-assembly behavior in alcohol

Author affiliations

Abstract

Highly branched poly(N-isopropylacrylamide) (PNIPAM) was first synthesized by self-condensing atom transfer radical copolymerization (SCATRCP) catalyzed by CuBr/tris[2-(dimethylamino)ethyl]amine (Me6TREN) complex in isopropanol at room temperature. This method showed good control over chain morphology and lower critical solution temperature (LCST) type phase transition behavior of PNIPAM by varying reaction time and monomer/inimer feed ratios. On the basis of GPC, FTIR, 1HNMR and DSC results, four stages were discerned during the polymerization procedure, at which chain architectures experienced “linear – comblike – slightly branched – highly branched” transformations. Additionally, the synthesized highly branched PNIPAM chains were found to be able to self-assemble into hollow spheres in alcohols such as methanol and ethanol, which arise from the presence of large amounts of hydrophobic branched points inside polymer chains.

Graphical abstract: Tailoring the morphology of branched poly(N-isopropylacrylamide)via self-condensing atom-transfer radical copolymerization and its unique self-assembly behavior in alcohol

Back to tab navigation

Article information


Submitted
16 Mar 2011
Accepted
02 Jun 2011
First published
07 Jul 2011

Soft Matter, 2011,7, 7526-7531
Article type
Paper

Tailoring the morphology of branched poly(N-isopropylacrylamide)via self-condensing atom-transfer radical copolymerization and its unique self-assembly behavior in alcohol

S. Sun and P. Wu, Soft Matter, 2011, 7, 7526
DOI: 10.1039/C1SM05459G

Social activity

Search articles by author

Spotlight

Advertisements