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Synergistic effect of graphene oxide and sodium carboxymethylcellulose on the properties of poly(vinyl alcohol) hydrogels

机译:石墨烯和羧甲基纤维素对聚(乙烯醇)水凝胶性能的协同作用

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摘要

Hydrogels are a promising candidate for applications in biomedicine and bioengineering, but their mechanical properties often restrict their applications. To improve the mechanical performance of poly(vinyl alcohol) (PVA) hydrogels, we introduced sodium carboxymethylcellulose (CMC), and graphene oxide (GO) into them. We prepared a series of composite hydrogels composed of PVA, CMC, and GO with epichlorohydrin as a chemical crosslinker. We used Fourier transform infrared spectroscopy and X-ray diffraction to characterize the chemical structures of GO and the hydrogel. The dynamic mechanical analysis results show the synergistic enhancement effects of CMC and GO on the PVA hydrogel. The swelling process of the hydrogels also fit well with the second-order kinetic equation. Scanning electron microscopy results suggest that the neat mesh structure facilitated superior mechanical properties in the hydrogels. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47644.
机译:水凝胶是生物医学和生物工程中应用的有希望的候选者,但它们的机械性能通常会限制其应用。 为了改善聚(乙烯醇)(PVA)水凝胶的机械性能,我们将羧甲基纤维素(CMC)和石墨烯(GO)引入它们中。 我们制备了一系列由PVA,CMC组成的复合水凝胶,并用异氯醇作为化学交联剂。 我们使用傅里叶变换红外光谱和X射线衍射来表征Go和水凝胶的化学结构。 动态力学分析结果表明了CMC的协同增强效果,并进行PVA水凝胶。 水凝胶的溶胀过程也适合二阶动力学方程。 扫描电子显微镜结果表明,整齐的网状结构促进了水凝胶中的优异机械性能。 (c)2019 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2019,136,47644。

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