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3.5. Pore size distribution of PLGA/PHBV scaffold Pore size distribution of the scaffolds acquired by MIP test was shown in Fig. 5. The results seemed a little out of expectation. After adding the PHBV microspheres, the pore size of the scaffold should be influenced in some extent, but the PLGA/30% PHBV scaffold showed bigger pore size than that of pure PLGA. However, the PLGA/50% PHBV exhibited reasonable pore size distribution compared with PLGA/30% PHBV scaffold. Besides, most of pore sizes of the scaffolds were located between 50 μm and 300 μm, which were suitable for cell and tissue penetration. 3.6. Compressive strength of PLGA/PHBV scaffold The compressive strength of the scaffolds was tested on a universal material testing machine and the results were shown in Fig. 6. The value of PLGA/50% PHBV scaffolds was the highest which came to (1.48232 ± 0.16643) Mpa. It was obviously higher than that of pure PLGA and PLGA/30% PHBV scaffolds. However, the strength of PLGA/30% PHBV scaffold only possessed 1.12844 ± 0.13511 Mpa, which was of no significant differentiation to that of pure PLGA scaffold (1.00937± 0.12762 Mpa). |
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Hi, my friends. Enjoy. 3.5. Pore size distribution of PLGA/PHBV scaffold Pore size distribution of the scaffolds acquired by MIP test was shown in Fig. 5. The results seemed a little out of expectation. After adding the PHBV microspheres, the pore size of the scaffold should be influenced in some extent, but the PLGA/30% PHBV scaffold showed bigger pore size than that of pure PLGA. However, the PLGA/50% PHBV exhibited reasonable pore size distribution compared with PLGA/30% PHBV scaffold. Besides, most of pore sizes of the scaffolds were located between 50 μm and 300 μm, which were suitable for cell and tissue penetration. 图5 显示了由MIP测试获取的支架的孔径分布。 结果似乎有点出乎意料。加入PHBV微球后，支架的孔径应在一定程度上受到影响，但支架PLGA/ 30％PHBV的孔径比纯PLGA的更大。然而与支架PLGA/ 30％PHBV相比，PLGA/ 50％PHBV展出合理的孔径分布。此外，大多数支架的孔径分布在50至300微米之间，适合于细胞和组织之间的穿透。 3.6. Compressive strength of PLGA/PHBV scaffold The compressive strength of the scaffolds was tested on a universal material testing machine and the results were shown in Fig. 6. The value of PLGA/50% PHBV scaffolds was the highest which came to (1.48232 ± 0.16643) Mpa. It was obviously higher than that of pure PLGA and PLGA/30% PHBV scaffolds. However, the strength of PLGA/ scaffold only possessed 1.12844 ± 0.13511 Mpa, which was of no significant differentiation to that of pure PLGA scaffold (1.00937± 0.12762 Mpa). 在万能材料实验机上测试了支架的耐压强度，其结果示于图6中. 支架PLGA/50％PHBV的强度最高，为1.48232±0.16643兆帕。明显高于纯PLGA和PLGA/30％PHBV支架的耐压强度。然而，PLGA/30% PHBV的耐压强度为1.12844±0.13511兆帕，这与纯PLGA支架的耐压强度1.00937±0.12762兆帕没有显著区别。 |
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3楼2014-11-24 09:00:28