Fractionation of ethylene–propylene copolymers
✍ Scribed by Toshio Ogawa; Shoichi Tanaka; Tadami Inaba
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 578 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0021-8995
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📜 SIMILAR VOLUMES
Crystalline structure were studied on both block and random propyleneethylene copolymer fractions, which were obtained by temperature rising elution fractionation. The peak characteristic of a-polypropylene (PP) was observed for all fractions, except the fraction eluted at room temperature. A charac
## 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.
## Abstract An ethylene–propylene copolymer synthesized with a Ziegler–Natta catalyst was fractionated by a combination of dissolution/precipitation and temperature‐gradient extraction fractionation. The fractions were characterized with ^13^C‐NMR, differential scanning calorimetry, and wide‐angle