6533b7d7fe1ef96bd1268347
RESEARCH PRODUCT
Functional Group Distribution and Gradient Structure Resulting from the Living Anionic Copolymerization of Styrene and para-But-3-enyl Styrene
Arda AlkanArda AlkanAdrian NatalelloFrederik R. WurmHolger FreyPhilipp Von Tiedemannsubject
chemistry.chemical_classificationMaterials sciencePolymers and PlasticsCyclohexaneComonomerOrganic ChemistrySize-exclusion chromatographyPolymerStyreneInorganic Chemistrychemistry.chemical_compoundMonomerDifferential scanning calorimetrychemistryPolymer chemistryMaterials ChemistryCopolymerdescription
The functional group distribution along the polymer backbone resulting from the living anionic copolymerization of styrene (S) and para-but-3-enyl styrene (pBuS) was investigated in cyclohexane at room temperature. A variety of copolymers with different comonomer contents x(S) = 0–0.84 have been synthesized with molecular weight dispersities Mw/Mn ≤1.12. All polymers have been characterized in detail by 1H NMR spectroscopy, size exclusion chromatography (SEC), and differential scanning calorimetry (DSC). A detailed understanding of the monomer sequence distribution during the copolymerization was achieved by real-time 1H NMR spectroscopy. This technique permits us to determine the changing monomer concentration of each monomer in stock throughout the reaction. Consequently, monomer incorporation and thus the probability of incorporation can be determined at any time of the copolymerization, and a precise determination of the functional group density along the polymer chain is possible. To demonstrate acce...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-05-30 | ACS Macro Letters |