Thermoplastic comparison
PHB (polyhydroxybutyrate, a PHA) vs PTFE (Teflon)
Every value below is a typical room-temperature figure with its source, test method and conditions — the same dataset that drives the calculators.
| Property | PHB (polyhydroxybutyrate, a PHA) | PTFE (Teflon) | Difference |
|---|---|---|---|
| Density | 1.25 g/cm³ | 2.17 g/cm³ | PTFE (Teflon) — 74% higher |
| Young's modulus E | 3.5 GPa | 0.5 GPa | PHB (polyhydroxybutyrate, a PHA) — 7.0× higher |
| Tensile strength | 40 MPa | 24 MPa | PHB (polyhydroxybutyrate, a PHA) — 67% higher |
| Melting point Tm | 177 °C | 327 °C | PTFE (Teflon) — 150 °C higher |
Where these numbers come from
- Sudesh, Abe & Doi, Prog. Polym. Sci. 25 (2000) 1503–1555 — PHA structure & properties review
- Callister & Rethwisch, Materials Science and Engineering, 10th ed.
Typical room-temperature values for learning and preliminary design; grades vary widely and a supplier datasheet always overrides a textbook figure. Confirm against the datasheet before design work.