Lactic acid ''O''-carboxyanhydride
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| Names | |
|---|---|
| IUPAC name
5-Methyl-1,3-dioxolane-2,4-dione | |
| Identifiers | |
| 3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.116.276 |
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| Properties | |
| C4H4O4 | |
| Molar mass | 116.07 g·mol−1 |
| Melting point | 28 °C (82 °F; 301 K) |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Lactic acid O-carboxyanhydride (lac-OCA) is an organic compound. It is used as a monomer equivalent to lactic acid or lactide in the preparation of poly(lactic acid). When this monomer undergoes ring-opening polymerization, one equivalent of carbon dioxide gas is released for every lactic acid unit incorporated into the polymer:[1]
This compound is prepared by treatment of lactic acid or its salts with phosgene or one of its equivalents, e.g. diphosgene.[1]
References
- 1 2 Kricheldorf, Hans R.; Jonté, J. Michael (1983). "New polymer syntheses". Polymer Bulletin. 9 (6–7): 276–283. doi:10.1007/BF00262719.
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