| Sample | HDPE-YL-003 |
| Plastic Type | High-density Polyethylene (HDPE) |
| Molecular Formula | (C2H4)n |
| Color | Yellow |
| Common use | Beverage bottle cap |
| Degradation details | Exposure to indoor conditions for 4 years; no exposure to aggresive environmental factors + the sample was introduced in liquid nitrogen for 10-15 minutes and then crushed into pieces with a hammer |
| Time of degradation | 4 years of indoor degradation + 15 minutes of accelerated degradation conditions in the laboratory |
| Sample description | Rigid cap. After the liquid nitrogen treatment, the sample was visible degraded. The small plastic piecies resulted were cracked, thiner, and had irregularly forms. |
| Microscopic image(s) |  |
| Macroscopic image(s) |  |
| Spectral Data type | Raman |
| Raman spectrum acquisition parameters | Laser wavelength: 785 nm Laser Power: 15 mW (5 % of the laser power) Exposure time: 1 s Objective magnification: 20X (NA 0.35) Spectrum range: 765-1600 cm-1 |
