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Characterization and antibacterial activity of chitosan-based composites with polyester

机译：壳聚糖与聚酯复合材料的表征和抗菌活性

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摘要

The effects of replacing poly(butylene succinate adipate) (PBSA) with acrylic acid-grafted PBSA (PBSA-g-AA) on the structure and the properties of a PBSA/chitosan composite were investigated. The properties of both PBSA-g-AA/ chitosan and PBSA/chitosan were compared using Fourier transform infrared (FTIR), ~(13)C nuclear magnetic resonance (NMR), X-ray diffraction (XRD), and an antibacterial activity test. With PBSA-g-AA in the composite, the compatibility with chitosan and, consequently, the properties of the composite became greatly improved due to the formation of ester and imide groups that conferred better dispersion and homogeneity of chitosan in the matrix. Composites containing PBSA-g-AA/chitosan exhibited superior mechanical properties due to greater compatibility between the two components. Moreover, chitosan enhanced the antibacterial activity of the composites. Composites of PBSA-g-AA or PBSA that contain chitosan have better antibacterial activity. The functionalized PBSA-g-AA/chitosan composites showed markedly enhanced antibacterial properties due to the carboxyl groups of acrylic acid, which acted as coordination sites for the chitosan phase, allowing the formation of stronger chemical bonds.
机译：研究了用丙烯酸接枝的PBSA（PBSA-g-AA）代替聚丁二酸丁二酸丁二酯（PBSA）对PBSA /壳聚糖复合材料的结构和性能的影响。使用傅立叶变换红外（FTIR），〜（13）C核磁共振（NMR），X射线衍射（XRD）和抗菌活性测试比较了PBSA-g-AA /壳聚糖和PBSA /壳聚糖的性能。在复合物中使用PBSA-g-AA时，由于形成了酯和酰亚胺基团，使壳聚糖在基质中具有更好的分散性和均一性，因此与壳聚糖的相容性以及复合物的性能得到了极大的改善。包含PBSA-g-AA /壳聚糖的复合材料由于两种组分之间的相容性更好，因此具有优异的机械性能。此外，壳聚糖增强了复合材料的抗菌活性。含有壳聚糖的PBSA-g-AA或PBSA的复合物具有更好的抗菌活性。官能化的PBSA-g-AA /壳聚糖复合材料显示出显着增强的抗菌性能，这是由于丙烯酸的羧基充当了壳聚糖相的配位点，从而形成了更强的化学键。

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