An insight into the sequential order in 2D correlation spectroscopy using polymer transitions: Boltzmann Sigmoid, Gaussian Cumulative, Lorentz Cumulative, and Asymmetric Sigmoid. Findings in experiments and simulations

In this paper, we found the curves of infrared spectral intensity at specific wavenumbers of several polymer transitions can be accurately fitted by one of Boltzmann Sigmoid, Gaussian Cumulative, Lorentz Cumulative, or Asymmetric Sigmoid functions. These transitions include the melting of iPP, the B...

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