Cotton gauze fabrics with improved absorbency through yarn twist optimization and antimicrobial property using nanosilver have been prepared. The absorbency, mass loss (%), dehydration rate, wicking rate, surface morphology, surface chemical nature and antibacterial activity of cotton gauze fabrics have been evaluated. The gauze fabric with low twisted yarn shows better absorbency and vertical wicking rate as compared to that with higher twisted yarn. The cotton gauze fabric with optimized twist multiplier (3.0 TM) is then treated with silver nitrate precursor to form in-situ nanosilver on the surface of cotton by applying elevated pressure and temperature. The surface morphology has been studied by SEM and chemical nature by FTIR. The in-situ technique produces an average nanosilver particle size of 120 ± 48 nm and shows 100% reduction for Klebsiella pneumoniae (Gram-negative bacterium) and 99.99% for Staphylococcus aureus (Gram-positive bacterium).

中文翻译：

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具有高吸收性和抗菌活性的棉基生物活性伤口敷料

已经制备了通过纱捻优化而具有改善的吸收性和使用纳米银的抗菌性能的棉纱织物。对棉纱布的吸收率，质量损失（％），脱水率，芯吸率，表面形态，表面化学性质和抗菌活性进行了评估。与高捻纱相比，低捻纱的纱布具有更好的吸收性和垂直芯吸率。然后用硝酸银前体处理具有最佳捻倍数（3.0 TM）的棉纱织物，通过施加高压和高温，在棉表面上形成原位纳米银。通过SEM研究了表面形态，并且通过FTIR研究了化学性质。在原位该技术产生的平均纳米银粒径为120±48 nm，显示肺炎克雷伯菌（革兰氏阴性菌）减少100 ％，金黄色葡萄球菌（革兰氏阳性菌）减少99.99％。