| polymer_type |
<app.db.schema.PolymerType object at 0x71ff90707050>
|
| morphology |
<app.db.schema.Morphology object at 0x71ff90704dd0>
|
| source |
<app.db.schema.LiteratureSource object at 0x71ff90704620>
|
| chemical_loads |
(<app.db.schema.ChemicalLoad object at 0x71ff90704fb0>)
(<app.db.schema.ChemicalLoad object at 0x71ff90706720>)
|
| matrix_entries |
(<app.db.schema.MatrixComposition object at 0x71ff90706c30>)
(<app.db.schema.MatrixComposition object at 0x71ff907068d0>)
|
| id |
4 |
| polymer_type_id |
4 |
| size_major_axis_nm |
80000.0 |
| size_minor_axis_nm |
45000.0 |
| morphology_id |
1 |
| crystallinity_pct |
10.0 |
| surface_area_m2_per_g |
0.6 |
| zeta_potential_mv |
-8.0 |
| hydrophobicity_log_d |
4.1 |
| surface_functionalization |
Chalky surface from UV degradation; residual PVC oligomers. |
| protein_corona_potential |
|
| origin |
Secondary |
| weathering_state |
4 |
| degradability_notes |
PVC is highly persistent; additives may leach under acidic conditions (e.g. stomach). |
| density_g_per_cm3 |
1.4 |
| reference_material_id |
|
| detection_method |
µRaman spectroscopy |
| refractive_index |
1.54 |
| reliability_rating |
conditional |
| detection_method_notes |
PVC is challenging for Py-GC/MS due to HCl degradation product. FTIR or µRaman may detect higher abundance. PVC is ubiquitous in home environments regardless of analytical detection limits. May be underrepresented in Py-GC/MS datasets. |
| source_id |
3 |
| notes |
Weathered PVC construction material fragment. Contains phthalate plasticisers. |
| created_at |
2026-05-16 05:30:24.903691 |
| updated_at |
2026-05-16 05:30:24.903691 |