Detection of weathering effects and mineral additive content of LDPE composites using hyperspectral imaging

The use of hyperspectral imaging and multivariate analysis to detect weathering effects and mineral additive content in LDPE composites is demonstrated. Principal component analysis of hyperspectral images was used to obtain models of composite gradation by additive content and presence of weathering effects. The analysis of the factor loading matrix of spectral wavelength reflectance coefficients revealed the most significant bands contributing to the gradation of composite samples by additive content and presence of weathering effects.