6533b7d1fe1ef96bd125c0e2

RESEARCH PRODUCT

Molecular Parameters of Hyperbranched Copolymers Obtained by Self-Condensing Vinyl Copolymerization, 2. Non-Equal Rate Constants

Galina I. LitvinenkoAxel H. E. MüllerPeter F. W. Simon

subject

chemistry.chemical_classificationPolymers and PlasticsOrganic ChemistryRadical polymerizationKineticsPolymerBranching (polymer chemistry)Inorganic Chemistrychemistry.chemical_compoundReaction rate constantMonomerchemistryPolymer chemistryMaterials ChemistryCopolymerMolar mass distribution

description

The kinetics, molecular weight averages, and the average degree of branching, DB, are calculated for the self-condensing vinyl copolymerization (SCVCP) of a vinyl monomer M with an "inimer" AB* in the case of different reactivities of active species. Emphasis is given to two limiting cases: formation of "macroinimers" occurs if the monomer M is more reactive than the vinyl groups of inimers or polymer, and "hyperstars" are formed in the opposite case. It is shown that the kinetics, the molecular weight averages, and the average degree of branching strongly depend on the relative reactivities of monomer and inimer. Comparison with experimental data shows that consistent fits of the reactivity ratios can be obtained.

yearjournalcountryeditionlanguage
2001-03-17Macromolecules
https://doi.org/10.1021/ma000641e