Abstract
Crystallization studies have been conducted on three copolymers of propylene with ethylene as a function of supercooling at atmospheric pressure. The results confirm the conclusions reached almost 30 years ago that copolymerization causes the γ-phase to be generated at atmospheric pressure for high molecular weight polymers. The greater the amount of comonomer, the greater the ease of formation of the γ-phase. The γ/α ratio is inversely proportional to supercooling, as has been found for isobaric crystallization at elevated pressures. It has been found that the equilibrium melting point decreases with ethylene content in a significant manner.
| Original language | English |
|---|---|
| Pages (from-to) | 2407-2411 |
| Number of pages | 5 |
| Journal | Polymer |
| Volume | 36 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1995 |
| Externally published | Yes |
Bibliographical note
Funding Information:This research has been supported by the Polymers Program of the National Science Foundation under grant DMR-9107675.
Keywords
- propylene-ethylene copolymers
- supercooling
- γ-phase
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry