Back to Search
Start Over
Synthesis of high molecular weight poly (β-pinene).
- Source :
- Macromolecules: Synthesis, Order & Advanced Properties; 1992, p1-9, 9p
- Publication Year :
- 1992
-
Abstract
- In the course of attempts to develop conditions for the living polymerization of β-pinene (β-PIN) we discovered that the conventional “H2O”/EtAlCl2 system produces poly(β-PIN)s of heretofore unattained high molecular weights (at least up to ∼40,000) and that the molecular weight can be controlled by the polymerization temperature in the −23 to −100°C range. The log $$\bar Mn$$ versus 1/T plot is linear and yields ΔHDP=−0.83 kcal/mol. The repeat unit of the high molecular weight polymer is which reflects isomerization polymerization. The Tg of poly(β-PIN) is 65°C by DSC. Melt drawn fibers are amorphous by X-ray analysis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISBNs :
- 9783540544906
- Database :
- Supplemental Index
- Journal :
- Macromolecules: Synthesis, Order & Advanced Properties
- Publication Type :
- Book
- Accession number :
- 32688583
- Full Text :
- https://doi.org/10.1007/BFb0051633