| polymer_type |
<app.db.schema.PolymerType object at 0x71ff90721850>
|
| morphology |
<app.db.schema.Morphology object at 0x71ff908785c0>
|
| source |
<app.db.schema.LiteratureSource object at 0x71ff908783b0>
|
| chemical_loads |
(<app.db.schema.ChemicalLoad object at 0x71ff909a6810>)
|
| matrix_entries |
(<app.db.schema.MatrixComposition object at 0x71ff907cde50>)
(<app.db.schema.MatrixComposition object at 0x71ff909840b0>)
|
| id |
14 |
| polymer_type_id |
2 |
| size_major_axis_nm |
150.0 |
| size_minor_axis_nm |
20.0 |
| morphology_id |
2 |
| crystallinity_pct |
45.0 |
| surface_area_m2_per_g |
40.0 |
| zeta_potential_mv |
-20.0 |
| hydrophobicity_log_d |
3.5 |
| surface_functionalization |
Slight surface cracking from UV exposure; evidence of photo-oxidation at fibre ends. |
| protein_corona_potential |
|
| origin |
Secondary |
| weathering_state |
2 |
| degradability_notes |
PP is highly persistent; nanofibre fragmentation continues under mechanical stress and UV exposure. |
| density_g_per_cm3 |
0.91 |
| reference_material_id |
|
| detection_method |
AFM-IR / Raman |
| refractive_index |
1.49 |
| reliability_rating |
reliable |
| detection_method_notes |
PP is reliably detected even at nanoscale by AFM-IR. Characteristic CH₃/CH₂ stretching modes are distinctive. |
| source_id |
4 |
| notes |
PP nanofibre from carpet and upholstery degradation; common in indoor dust nano-fraction. |
| created_at |
2026-05-16 05:30:24.903696 |
| updated_at |
2026-05-16 05:30:24.903696 |