Identification of LDPE Grades Focusing on Specific CH₂ Raman Vibration Modes

Figure 2

(a) Fitting of the LDPE CH₂ spectrum at room temperature with three Lorentzian functions (corresponding to the crystalline phase) and a Gaussian function (corresponding to the amorphous phase); (b) representation of the LDPE lamellar semicrystalline structure.

(a)

(b)