首页> 外文会议>Society for Biomaterials Transaction Annual Meeting vol.29 pt.2 >Hydrogels from chemically modified PVA with chondroitine sulfate: chemical characterization and biocompatibility
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Hydrogels from chemically modified PVA with chondroitine sulfate: chemical characterization and biocompatibility

机译:化学修饰的PVA与硫酸软骨素的水凝胶:化学表征和生物相容性

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Chemically modified PVA can be obtained by insertion methacryloil groups into the side hydroxyl polymer chain in the following degree of substitution (DS): [GMA/ (-OH PVA) mol-%]: a 2.5,3.5 and 5.0. The hydrogels of PVA-Ma and PVA-Ma with SC presented good mechanical properties. The elastic modulus ranges from 5 (33 wt-% in SC and DS = 2.5%) to 48 kPa (0 wt-% in SC and DS = 5.0%). The mechanism of water uptake is anomalous and it is not influenced by the pH. The hydrogels containing SC presented less inhibition to VERO cell growth as compared to polystyrene surfaces (a negative cytotoxic control). The inhibition to cell growth is higher in hydrogels of PVA-Ma without SC. The density of cross-linking in PVA-Ma hydrogels affects slightly, and negatively, the cell compatibility.
机译:化学修饰的PVA可以通过将甲基丙烯酸油基团以下列取代度(DS)插入到羟基聚合物侧链中来获得:[GMA /(-OH PVA)mol%]:2.5、3.5和5.0。具有SC的PVA-Ma和PVA-Ma的水凝胶具有良好的机械性能。弹性模量在5(SC和DS = 2.5%的33重量%)至48kPa(SC和DS = 5.0%的SC的0重量%)的范围内。吸水机制是异常的,不受pH值的影响。与聚苯乙烯表面相比,含SC的水凝胶对VERO细胞生长的抑制作用较小(阴性的细胞毒性对照)。没有SC的PVA-Ma水凝胶对细胞生长的抑制作用更高。 PVA-Ma水凝胶中交联的密度对细胞相容性的影响很小,但有负面影响。

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