| POLYMER CLASS | Polystyrenes |
| COMMON NAMES | Poly(α-methylstyrene) |
| STRUCTURE BASED NAME | Poly[1-(α-methylphenyl)ethane-1,2-diyl], Poly(α-methylphenylethylene) |
| ACRONYMS | PAMS, PαMS |
| CAS # | 25014-31-7 |
| CurlySMILES | C{-}C{n+}(C)(c1ccccc1) |
| CAS # | 25014-31-7 |
| COMMON NAMES | α-Methylstyrene |
| SMILES | CC(=C)c1ccccc1 |
| Std. InChI | 1S/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H3 |
| Std. InChIKey | XYLMUPLGERFSHI-UHFFFAOYSA-N |
| STRUCTURE |
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| PROPERTY | UNIT | VALUE / RANGE | PREFERRED |
| Molar Volume Vm | mL mol-1 | 109.9 - 111.0 | 110.4 |
| Density ρ | g mL-1 | 1.06 - 1.08 | 1.07 |
| Solubility Parameter δ | MPa1/2 | 17.6 - 19.3 | 18.4 |
| Molar Cohesive Energy Ecoh | J mol-1 | 35400 - 42600 | 37200 |
| Glass Transition Temperature Tg | K | 435 - 455 | 445 |
| Molar Heat Capacity Cp | J (mol K)-1 | 150 | |
| Entanglement Molecular Weight Me | g mol-1 | 13000 - 23000 | 16000 |
| Index of Refraction n | none | 1.59 |
| PROPERTY | UNIT | VALUE / RANGE | PREFERRED |
| Molecular Weight of Repeat unit | g mol-1 | 118.18 | |
| Van-der-Waals Volume VvW | mL mol-1 | 76.56 | |
| Molar Volume Vm | mL mol-1 | 113.8 - 115.2 | 114.4 |
| Density ρ | g mL-1 | 1.03 - 1.04 | 1.04 |
| Solubility Parameter δ | MPa1/2 | 17.7 - 18.8 | 18.5 |
| Molar Cohesive Energy Ecoh | J mol-1 | 36100 - 40300 | 39100 |
| Glass Transition Temperature Tg | K | 401 - 469 | 435 |
| Molar Heat Capacity Cp | J (mol K)-1 | 146 - 158 | 152 |
| Entanglement Molecular Weight Me | g mol-1 | 15900 - 22500 | 16700 |
| Index of Refraction n | none | 1.59 - 1.62 | 1.60 |