Melting behavior ofcis‐polybutadiene crystallized under stress

摘要

AbstractSamples of crosslinkedcis‐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 d