Читать книгу Poly(lactic acid) - Группа авторов - Страница 56

Holten [28] fitted density data from Troupe et al. [32] using a third‐order polynomial with each wt% fitted separately. The individual fits represent the experimental data within 0.2%. To provide practitioners a more rapid calculation, we have refitted the data of Troupe et al. using Equation 2.26 where coefficients A and B are linear functions of the apparent wt% lactic acid, w. The calculated densities, ρ , match experimental data within 0.3% as shown in Figure 2.8.

(2.26)

(2.27)

(2.28)