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RESEARCH PRODUCT
Rapid Synthesis and MALDI-ToF Characterization of Poly(ethylene oxide) Multiarm Star Polymers
Holger FreyFrederik R. WurmMaria DoychevaElena Berger-nicolettisubject
chemistry.chemical_classificationPolymers and PlasticsMolecular massChemistryOrganic ChemistryOxidePolymerCondensed Matter PhysicsRing-opening polymerizationchemistry.chemical_compoundAnionic addition polymerizationDeprotonationPolyolDendrimerPolymer chemistryMaterials ChemistryPhysical and Theoretical Chemistrydescription
Multiarm PEO star polymers with a purely aliphatic polyether structure have been synthesized using hyperbranched polyglycerol (PG) with different molecular weights as a multifunctional initiator. Different degrees of deprotonation of the initiator were studied with respect to molecular weight control. The results show that the degree of deprotonation is a crucial parameter for the synthesis of well-defined polymers with controlled molecular weights. Partial deprotonation of the PG hydroxyl groups (5-8%) was proven to represent an optimum for the synthesis of star polymers with molecular masses close to the theoretical values. Molecular weights of the stars ranged between 9 000 and 30000g · mol -1 . MALDI-ToF spectra confirmed that the PEO arms in the star polymers possess homogeneous lengths.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-11-24 | Macromolecular Chemistry and Physics |