| POLYMER CLASS | Polyesters |
| COMMON NAMES | Poly(4-hydroxybutyrate), poly(γ-butyrolactone) |
| STRUCTURE BASED NAME | Poly(4-hydroxybutyric acid) |
| ACRONYMS | P4HB |
| CAS # | |
| CurlySMILES | O{-}CCC{n+}(=O) |
| CAS # | 96-48-0 |
| COMMON NAMES | γ-butyrolactone, 1-Oxacyclopentane-2-one |
| SMILES | O= C1CCCO1 |
| Std. InChI | 1S/C4H6O2/c5-4-2-1-3-6-4/h1-3H2 |
| Std. InChIKey | YEJRWHAVMIAJKC-UHFFFAOYSA-N |
| STRUCTURE |
|
| PROPERTY | UNIT | VALUE / RANGE | PREFERRED |
| Molar Volume Vm | mL mol-1 | 70.61 | |
| Density ρ | g mL-1 | 1.221 | |
| Solubility Parameter δ | MPa1/2 | ||
| Molar Cohesive Energy Ecoh | J mol-1 | ||
| Glass Transition Temperature Tg | K | 214 - 222 | 221 |
| Molar Heat Capacity Cp | J (mol K)-1 | ||
| Entanglement Molecular Weight Me | g mol-1 | ||
| Index of Refraction n | none |
| PROPERTY | UNIT | VALUE / RANGE | PREFERRED |
| Molecular Weight of Repeat unit | g mol-1 | 86.09 | |
| Van-der-Waals Volume VvW | mL mol-1 | 45.9 | |
| Molar Volume Vm | mL mol-1 | 67.4 - 70.4 | 69.1 |
| Density ρ | g mL-1 | 1.22 - 1.28 | 1.25 |
| Solubility Parameter δ | MPa1/2 | 19.6 - 21.0 | 20.4 |
| Molar Cohesive Energy Ecoh | J mol-1 | 25900 - 30900 | 28600 |
| Glass Transition Temperature Tg | K | 189 - 255 | 227 |
| Molar Heat Capacity Cp | J (mol K)-1 | 156 - 161 | 158.5 |
| Entanglement Molecular Weight Me | g mol-1 | 2000 - 2700 | 2450 |
| Index of Refraction n | none | 1.48 - 1.49 | 1.49 |
Last updated: October 7, 2017