Chain microstructure of homogeneous ethylene‐1‐alkene copolymers and characteristics of single site catalysts using a direct 13C NMR peak method I. Theory and models
作者： F. G. Karssenberg , V. B. F. Mathot , T. J. G. Zwartkruis
DOI: 10.1002/POLB.20583
关键词:
摘要: To describe the detailed microstructure of homogeneous ethylene-1-alkene copolymer chains and to study characteristics single site catalysts, Markov statistics are used fit peak intensities all relevant 13 C NMR signals series copolymers. In case occurrence inverted comonomer units, a first-order terpolymer is applied, otherwise second-order model. Chain propagation probabilities obtained via modeling entire spectrum. This procedure results in an accurate reproduction chain microstructure, including ethylene, 1-alkene, methylene sequence length distributions. If experimental (co)monomer feeds known, reactivity ratios theoretical also found providing information about copolymerization kinetics catalyst.
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