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Crystallization and melting behavior of trans ‐1,2‐syndiotactic polypentadiene
Author(s) -
Bertini Fabio,
Canetti Maurizio,
Ricci Giovanni
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22022
Subject(s) - tacticity , polybutadiene , differential scanning calorimetry , materials science , crystallization , thermogravimetry , avrami equation , crystallinity , polymer chemistry , kinetics , polymer , fourier transform infrared spectroscopy , isothermal process , melting point , polymerization , crystallization of polymers , copolymer , thermodynamics , chemical engineering , composite material , physics , quantum mechanics , engineering
(E)‐1,3‐pentadiene was polymerized at −30°C by using the catalyst system CoCl 2 (P i PrPh 2 ) 2 –MAO. A trans ‐1,2‐syndiotactic structure was attributed to the semicrystalline polymer obtained on the basis of the characterization carried out by FTIR, NMR, and WAXD techniques. The thermal behavior of the polypentadiene was investigated by thermogravimetry and differential scanning calorimetry. Isothermal melt crystallization kinetics were analyzed according to the Avrami equation. Nonisothermal crystallization kinetics were elaborated by using Ziabicki and Avrami methods modified by Jeziorny. The equilibrium melting temperature was calculated. The thermal behavior of trans ‐1,2‐syndiotactic polypentadiene was compared with that of 1,2‐syndiotactic polybutadiene. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1970–1976, 2005