6533b855fe1ef96bd12b10b6
RESEARCH PRODUCT
Solution behavior of 4-arm poly(tert-butyl acrylate) star polymers
Andrzej DworakAndrzej DworakBarbara MendrekBarbara MendrekWojciech WałachBarbara Trzebickasubject
Hydrodynamic radiusMolar massPolymers and PlasticsChemistryIntrinsic viscosityButyl acrylateOrganic ChemistryGeneral Physics and AstronomyGel permeation chromatographychemistry.chemical_compoundVirial coefficientPolymer chemistryMaterials ChemistryRadius of gyrationPhysical chemistryStatic light scatteringdescription
Abstract This paper reports the synthesis of 4-arm poly( tert -butyl acrylate) stars of different molar masses up to 10 6 g/mol by the “core-first” method using ATRP. All obtained stars have a monomodal and narrow molar-mass distribution ( The dilute-solution properties of these star polymers were investigated in good solvents (tetrahydrofuran and acetone). Gel permeation chromatography and dynamic and static light scattering were used to measure the hydrodynamic properties including intrinsic viscosity [ η ], radius of gyration R g , hydrodynamic radius R h , second virial coefficient A 2 and diffusion coefficient D 0 . These data were used to establish relationships between these parameters and the molar mass of 4-arm poly( tert -butyl acrylate) stars. The branching parameters g and g ′ and the shape factor ρ were calculated for all obtained star polymers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-12-01 | European Polymer Journal |