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Melting behavior of cis ‐polybutadiene crystallized under stress
Author(s) -
De Candia F.,
Romano G.
Publication year - 1989
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.1989.070380205
Subject(s) - polybutadiene , crystallization , degree (music) , melting temperature , materials science , thermodynamics , melting point , function (biology) , folding (dsp implementation) , composite material , polymer , copolymer , physics , evolutionary biology , biology , acoustics , electrical engineering , engineering
Samples of crosslinked cis ‐polybutadiene were crystallized at different temperature and drawing degree. The melting behavior of the crystallized samples was analyzed detecting the retractive stress as a function of temperature. The experimental melting data were extrapolated to the equilibrium conditions to obtain the thermodynamic melting temperature as a function of the drawing degree. The extrapolated data were analyzed with different theoretical approaches. Results agree with a model in which chain‐folding and extended‐chain crystallization can coexist, depending on crystallization temperature and drawing degree.