Institute for Materials Research and Innovation, University of Bolton, Deane Road, Bolton BL3 5AB, UK.
Institute for Materials Research and Innovation, University of Bolton, Deane Road, Bolton BL3 5AB, UK.
Carbohydr Polym. 2014 Feb 15;102:920-7. doi: 10.1016/j.carbpol.2013.10.053. Epub 2013 Nov 6.
Fibres have been used extensively in wound dressing applications as they provide a high surface area for absorption, ease of fabrication and softness. It is common practice for commercial wound dressings to be produced from natural materials, such a marine polysaccharides, as they are predominantly biocompatible, non-toxic, and often display bioactive properties, such as inherent antimicrobial activity. In this study hydrolysed chitosans were utilised as a sole coagulant for the production of alginate-chitosan fibres via a one-step, direct wet-spinning extrusion process. The levels of chitosan incorporated into the fibres were analysed quantitatively via elemental analysis and qualitatively by staining using Amido Black 10B. It was estimated that the fibres contained between 4.50 and 5.10% (wt.%) chitosan. The presence of chitosan improved tensile properties such as elongation and tenacity of the base alginate fibres. The increased incorporation of chitosan into the fibres also improved the absorption of the fibres in both saline and distilled water; reaching maximum of >30 g/g and >50 g/g, respectively. This work suggests that the observed hydrolysed chitosan content within the fibre may be optimal for the preparation of a novel fibre for wound care application.
纤维在伤口敷料应用中得到了广泛的应用,因为它们提供了高的表面积吸收,易于制造和柔软。商业伤口敷料通常由天然材料制成,如海洋多糖,因为它们主要具有生物相容性、无毒,并且通常具有生物活性特性,如固有抗菌活性。在这项研究中,水解壳聚糖被用作海藻酸钠-壳聚糖纤维的唯一凝固剂,通过一步法、直接湿法纺丝挤出工艺生产。通过元素分析对纤维中壳聚糖的含量进行定量分析,通过使用 Amido Black 10B 染色进行定性分析。据估计,纤维中含有 4.50%至 5.10%(wt.%)的壳聚糖。壳聚糖的存在改善了纤维的拉伸性能,如海藻酸盐纤维的伸长率和韧性。壳聚糖在纤维中的加入量增加也提高了纤维在盐水中和蒸馏水中的吸收能力;分别达到>30 g/g 和>50 g/g 的最大值。这项工作表明,纤维中观察到的水解壳聚糖含量可能是制备新型伤口护理应用纤维的最佳选择。