Table 2.
Physical and chemical properties of PU and starch.
| Property | PU | Starch |
|---|---|---|
| Chemical Formula | C27H36N2O10 | (C6H10O5)n |
| Chemical Structure |  |
 |
| Molar Mass (g/mol) | 548.589 | Variable |
| Appearance | Yellow | White |
| Density (g/cm3) | 1.2 | 1.5 |
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