International Scholarly Research Notices / 2011 / Article / Fig 3

Review Article

Degradable PHBHHx Modified by the Silk Fibroin for the Applications of Cardiovascular Tissue Engineering

Figure 3

Diffusion curve of water in PHBHHx (HHx = 12 mol%) matrix with crystalline degree of 1 6 . 2 ± 0 . 3 %. The hollow square and solid triangle points represent experimental data of Sample I and II, respectively, and the solid lines represent fitted curves based on Fickian Model. The thickness of the polymer film 𝐿 = 9 7 ± 1 μm. (a) represents 𝑣 (OH) stretching band at 3700~3000 cm−1  versus diffusion time; (b) represents 𝛿 (OH) bending band at 1700~1550 cm−1  versus diffusion time. The diffusion coefficient 𝐷 𝑣 derived from 𝑣 (OH) stretching band is 8 . 7 × 1 0 8  cm2 s−1 (Sample I, 𝑅 2 𝑣 = 0 . 9 9 9 4 ) and 7 . 5 × 1 0 8  cm2 s−1 (Sample II, 𝑅 2 𝑣 = 0 . 9 9 9 0 ) and 𝐷 𝛿 derived from 𝛿 (OH) bending band is 8 . 1 × 1 0 8  cm2 s−1 (Sample I, 𝑅 2 𝛿 = 0 . 9 9 9 0 ) and 7 . 0 × 1 0 8  cm2 s−1 (Sample II, 𝑅 2 𝛿 = 0 . 9 9 9 2 ) at 293 K. The average water diffusion coefficient 𝐷 and standard deviation of 7 . 8 ± 0 . 7 × 1 0 8  cm2 s−1 was determined by two pairs of 𝐷 𝑣 and 𝐷 𝛿 [22].
389872.fig.003a
(a)
389872.fig.003b
(b)

Article of the Year Award: Outstanding research contributions of 2020, as selected by our Chief Editors. Read the winning articles.