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  • Triblock copolymer based on poly(propylene oxide) and poly(1-[11-acryloylundecyl]-3-methyl-imidazolium bromide).

Triblock copolymer based on poly(propylene oxide) and poly(1-[11-acryloylundecyl]-3-methyl-imidazolium bromide).

Macromolecular rapid communications (2011-12-03)
John Texter, Vivek Arjunan Vasantha, Rene Crombez, Rafael Maniglia, Lisa Slater, Thomas Mourey
ABSTRACT

The controlled atom transfer radical polymerization of an ionic liquid, 1-(11-acryloylundecyl)-3-methyl imidazolium bromide (ILBr), from both ends of a telechelic poly(propylene oxide) (PPO) macroinitiator, end-functionalized with bromoisobutyryloyl is reported. The resulting highly water-soluble triblock, poly(ILBr-b-PO-b-ILBr) is multistimuli responsive. This new class of triblocks exhibits classical surface activity in lowering surface tension at the air-water interface and in modifying wetting in waterborne coatings. It also immunizes model colloids against coagulation induced by Debye-Hückel (indifferent electrolyte) electrostatic screening. Further, sol-gel thermoreversibility is unexpectedly found as an additional form of stimuli responsiveness.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Poly(propylene glycol), average Mn ~2,000
Sigma-Aldrich
Polypropylene glycol, P 1,200
Sigma-Aldrich
Polypropylene glycol, P 400
Sigma-Aldrich
Polypropylene glycol, P 2,000
Sigma-Aldrich
Poly(propylene glycol), average Mn ~4,000
Sigma-Aldrich
Poly(propylene glycol), average Mn ~425
Sigma-Aldrich
Poly(propylene glycol), average Mn ~725
Sigma-Aldrich
Poly(propylene glycol), average Mn ~2,700
Sigma-Aldrich
Poly(propylene glycol), average Mn ~1,000