Ethylene and linear, nonconjugated dienes were copolymerized with the catalyst system Cp 2 ZrCl 2 /methylaluminoxane (MAO). The comonomer incorporation and the relationships between structure and properties were evaluated by NMR and by thermal techniques, especially the segregation fractionation tec
Evaluation of the comonomer distribution in ethylene copolymers using DSC fractionation
✍ Scribed by M.Y. Keating; E.F. McCord
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 987 KB
- Volume
- 243
- Category
- Article
- ISSN
- 0040-6031
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📜 SIMILAR VOLUMES
The comonomer distributions of commercial linear low density polyethylenes (LLDPE) and linear very low density polyethylenes (VLDPE) produced with traditional high activity Ziegler-Natta (Z-N) catalysts were characterized by temperature rising elution fractionation (TREF). In order to develop faster
## Abstract **Summary:** Three propylene‐ethylene random copolymers, of varying ethylene content, were fractionated using preparative TREF. The TREF fractions were subsequently analysed offline by CRYSTAF, DSC, ^13^C NMR spectroscopy, HT‐GPC, and WAXD. The effect of the ethylene comonomer on the cr
## Abstract The intermolecular structural heterogeneity of a propylene‐ethylene random copolymer was studied by preparative temperature rising elution fractionation combined with GPC, ^13^C‐NMR, differential scanning calorimetry, and wide‐angle X‐ray diffraction analysis of the obtained fractions.