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3.4. Porosity of PLGA/PHBV scaffold Some parameters related to the scaffolds such as porosity,average volume, pore volume per gram and density were exhibited in Fig. 4. The porosities of three kinds of scaffold were slightly below the pre-set value. The porosity of pure PLGA scaffolds reached to 81.830±1.723%, which was close to that of PLGA/30% PHBV scaffolds (81.273±2.192%). When the PHBV microspheres content came to 50%, the porosity of the scaffolds still showed no statistical significant when compared with that of pure PLGA scaffolds. The result demonstrated that the PHBV microspheres had little influence on the porosity of PLGA scaffold. With the increase of PHBV microspheres, the density of scaffolds increased accordingly (from 0.17290±0.00461 of pure PLGA to 0.25160±0.03828 of PLGA/50% PHBV). At the same time, the pore volume per gram decreased with the increase of PHBV microspheres. The above two graphs coincided well with each other. Because of the augment of density, the volume of every gram of the scaffolds should have reduced. |
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木虫之王 (文学泰斗)
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雪嫣2: 金币+45, 翻译EPI+1, ★★★★★最佳答案, 非常感谢你的回复,我很满意，很棒！谢谢你哈！ 2014-12-14 18:15:13
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3.4. PLGA/PHBV 支架材料的孔隙率 图4展示了与支架材料相关的一些参数，如孔隙率、平均体积、克孔体积以及密度等。三种支架材料的孔隙率均略低于预设值。纯PLGA支架材料的孔隙率达到81.830±1.723%，非常接近PLGA/30% PHBV支架材料的孔隙率（81.273±2.192%）。当PHBV微球含量达到50%时，支架材料的孔隙率与纯PLGA支架材料的孔隙率相比仍然没有显著的统计学差异（这里，原文掉了一个词difference，考虑上下文酌情翻译出）。这一结果表明PHBV微球对PLGA支架材料孔隙率的影响甚微。随着PHBV微球含量的增加，支架材料的密度相应增大（从纯PLGA支架材料的0.17290±0.00461增大到PLGA/50% PHBV支架材料的0.25160±0.03828）。同时，克孔体积随着PHBV微球含量的增加而降低。以上两图相互吻合得十分好。由于密度的增大，支架材料的克体积应该有所降低。 |
2楼2014-12-14 17:52:50
