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Analysis and properties of ethylene–propylene copolymers

✍ Scribed by Smith, W. E. ;Stoffer, R. L. ;Hannan, R. B.

Publisher
John Wiley and Sons
Year
1962
Weight
266 KB
Volume
61
Category
Article
ISSN
0022-3832

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✦ Synopsis

Abstract

Copolymers of ethylene and C^14^‐labeled propylene were prepared with a metal‐oxide catalyst which polymerizes ethylene to a high density polymer. Methyl branches arising from the propylene were counted radiochemically and then related to the infrared absorption of films at 8.7 μ. This band was then used independently to determine methyl branching of a series of ethylene‐propylene copolymers that differed in density and stiffness. Both properties decrease in value with an increase in branching.

📜 SIMILAR VOLUMES

Properties of ethylene–propylene copolym
Properties of ethylene–propylene copolymers and of terpolymers containing unsaturation
✍ Natta, G. ;Crespi, G. 📂 Article 📅 1962 🏛 John Wiley and Sons ⚖ 644 KB

## Abstract The elastomeric properties of amorphous ethylene–α‐olefin copolymers have been described in previous papers, as well as the importance of both the homogeneity of composition of each macromolecule forming the raw polymer and the statistical distribution of the two comonomers. It has been