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Cellulose acetate electrospun nanofibrous membrane: fabrication, characterization, drug loading and antibacterial properties

机译:醋酸纤维素电纺纳米纤维膜:制备,表征,载药量和抗菌性能

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摘要

Cellulose-based materials are one of the most commonly used materials for biomedical applications, which normally applied as carriers for pharmaceuticals and drug-releasing scaffolds. In this study, cellulose acetate (CA) was used to fabricate the nanofibrous membrane using the electrospinning technique. CA solutions at different concentrations were prepared by dissolving the polymer in a mixture of acetic acid/acetone solvents with the ratio of 3: 1. The field emission scanning electron microscope results showed that electrospinning of 10% (w/v) CA produced nanofibres with many beads. When the CA concentration was increased to 14% (w/v), bead-free nanofibres were produced. The contact angle measurement results confirmed the hydrophilic properties of nanofibres. In order to prevent common bacterial infections, a model drug, Tetracycline • HCL was incorporated into the CA nanofibres. The drug-loaded CA nanofibres showed antibacterial activity against Gram-positive and Gram-negative bacteria. CA nanofibres had high water uptake properties. The CA nanofibrous membrane was non-toxic to human skin fibroblast cells. Thus the CA nanofibres with 14% (w/v) concentration exerted suitable properties for wound healing application.
机译:纤维素基材料是生物医学应用中最常用的材料之一,通常用作药物和药物释放支架的载体。在这项研究中,醋酸纤维素(CA)用于通过静电纺丝技术制造纳米纤维膜。通过将聚合物以3:1的比例溶于乙酸/丙酮溶剂的混合物中来制备不同浓度的CA溶液。场发射扫描电子显微镜结果表明,电纺10%(w / v)的CA会产生纳米纤维。很多珠子。当CA浓度增加到14%(w / v)时,产生了无珠的纳米纤维。接触角测量结果证实了纳米纤维的亲水性。为了防止常见细菌感染,将模型药物四环素•HCL掺入了CA纳米纤维中。载有药物的CA纳米纤维对革兰氏阳性和革兰氏阴性细菌表现出抗菌活性。 CA纳米纤维具有高吸水性能。 CA纳米纤维膜对人皮肤成纤维细胞无毒。因此,浓度为14%(w / v)的CA纳米纤维具有适合伤口愈合的特性。

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