6533b824fe1ef96bd127fe1e
RESEARCH PRODUCT
ABC triblock polyampholytes containing a neutral hydrophobic block, a polyacid and a polybase
Reimund StadlerEllen Giebelersubject
Polymers and PlasticsOrganic ChemistryPotentiometric titrationCondensed Matter PhysicsMethacrylatechemistry.chemical_compoundchemistryMethacrylic acidPolymer chemistryMaterials ChemistryCopolymerMolar mass distributionTitrationPhysical and Theoretical ChemistryTetrahydrofuranLiving anionic polymerizationdescription
Well defined ABC triblock copolymers of polystyrene-block-poly(2-vinylpyridine)-block-poly(tert-butyl methacrylate) and polystyrene-block-poly(4-vinylpyridine)-block-poly(tert-butyl methacrylate) were synthesized by sequential living anionic polymerization in tetrahydrofuran. Triblock copolymers with narrow molecular weight distribution were obtained. Hydrolysis of the poly(tert-butyl methacrylate) block yields polystyrene-block-polyvinylpyridine-block-poly(methacrylic acid) which demonstrates pH-dependent solution properties. Interpolymer complexation of the polyvinylpyridine and poly(methacrylic acid) blocks in the micellar solution is studied in dependence of the pH in solution by potentiometric, conductometric and turbidimetric titration, and in bulk by FTIR spectroscopy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-12-01 | Macromolecular Chemistry and Physics |