Table 1.
Main characteristics and typical low-density polyethylene (LDPE) film usage.
Fig 1.
Scheme of the sample treatment and analyses.
Table 2.
Carbonyl, hydroxyl, reference band range, and wavenumber peak used to calculate the carbonyl and hydroxyl indices.
Fig 2.
Δ spectra between 80 days UV-exposed and pristine samples. The different colours indicate the mean Δ spectra of the different samples tested in this study. Where a) represents the samples treated only with UV, and b) represents the samples treated with UV and abrasion. For an overview of the abbreviation, please see Table 1.
Fig 3.
Carbonyl index ofa) MS1, b) MS2, c) ML1B, d) ML2B, e) ML1W, f) ML2W, g) GL1, and h) GL2. *p < 0.05. For abbreviations, see Table 1.
Fig 4.
Wettability of a) MS1, b) MS2, c) ML1B, d) ML2B, e) ML1W, f) ML2W, g) GL1, and h) GL2.*p < 0.05. For abbreviations, see Table 1.
Fig 5.
Surface roughness of a) MS1, b) MS2, c) ML1B, d) ML2B, e) ML1W, f) ML2W, g) GL1, and h) GL2.*p < 0.05. The samples GL1 and GL2 are presented in different scales for better visualisation. For abbreviations, see Table 1.
Fig 6.
Young’s modulus (E) of UV-treated samples.
For abbreviations of the tested films, see Table 1.