| POLYMER CLASS | Polymethacrylate |
| COMMON NAMES | Poly(methacrylic acid) |
| STRUCTURE BASED NAME | Poly(2-methyl-2-propenoic acid) |
| ACRONYMS | PMAA |
| CAS # | 54193-36-1 |
| CurlySMILES | C{-}C{n+}(C)(C(=O)O) |
| CAS # | 201-204-4 |
| COMMON NAMES | Methacrylic acid |
| SMILES | CC(=C)C(=O)O |
| Std. InChI | InChI=1S/C4H6O2/c1-3(2)4(5)6/h1H2,2H3,(H,5,6) |
| Std. InChIKey | CERQOIWHTDAKMF-UHFFFAOYSA-N |
| STRUCTURE |
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| PROPERTY | UNIT | VALUE / RANGE | PREFERRED |
| Molar Volume Vm | mL mol-1 | 67 | |
| Density ρ | g mL-1 | 1.29 | |
| Solubility Parameter δ | MPa1/2 |
22 - 30 26 - 30 (strong H-bonding) ≈ 20 (moderate H-bonding) | 26.7 20 |
| Molar Cohesive Energy Ecoh | J mol-1 | ||
| Glass Transition Temperature Tg | K | 501 | |
| Molar Heat Capacity Cp | J (mol K)-1 | 111.8 - 112.5 | 112.1 |
| 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 | 46.5 | |
| Molar Volume Vm | mL mol-1 | 63.9 - 66.8 | 65.3 |
| Density ρ | g mL-1 | 1.29 - 1.35 | 1.32 |
| Solubility Parameter δ | MPa1/2 | 18.0 - 20.7 | 19.6 |
| Molar Cohesive Energy Ecoh | J mol-1 | ||
| Glass Transition Temperature Tg | K | 511 | |
| Molar Heat Capacity Cp | J (mol K)-1 | 110.6 - 116.4 | 112.8 |
| Entanglement Molecular Weight Me | g mol-1 | 7300 - 7800 | 7550 |
| Index of Refraction n | none | 1.51 - 1.54 | 1.52 |
Last updated: December 3, 2015