A method for comparing the nucleation ability of PTFE, iPP and sPP on PE

Heterogeneous nucleation is not only a commonly encountered phenomenon of p olymer crystallization, but also a fundamentally important research topic f or understanding polymer crystallization. Both, polymer epitaxy and transcr ystallization are well known mechanisms for surface induced oriented nuclea tion, but they only have been studied separately with respect to the nuclea tion abilities of one polymer to another. A new experimental procedure is e stablished to combine transcrystallization and heteroepitaxy of one polymer on two different polymeric substrates. This provides a new way for compari ng the relative nucleation onset of one polymer nucleated simultaneously on to two different substrates.