Natural Biopolymer-hydrogels Nanofibers for Antibacterial Applications

IF 1.5 4区 材料科学 Q3 ENGINEERING, MECHANICAL Journal of Engineering Materials and Technology-transactions of The Asme Pub Date : 2023-08-31 DOI:10.1115/1.4063329
S. Habeeb, Mushreq Kareem Abdulkadhim
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Abstract

This study used a suitable solvent such as deionized water and aqueous acetic acid to dissolve completely polymer blends such as gelatin: chitosan: pullulan (G: CS: PUL) with mixing ratios of 80:10:10, 60:20:20, 40:30:30, 20:40:40 respectively. The properties of natural polymer mixtures, viscosity, surface tension, and electrical conductivity were examined, and the fiber diameter and nanofiber diameters distribution were measured. Increasing the gelatin content from 20% to 80% in the G: CS: PUL increases the properties of biopolymer solutions, such as viscosity, surface tension, and electrical conductivity 157%, 14%, and 37%, respectively. In addition, increasing the gelatin content reduces the contact angle by 55%. In other words, the average diameter of the nanofibers increased from 91.177 ± 27.162 to 212.46 ± 67.91 nm with the increase of the gelatin content by 40 % - 100% in the blends and obtaining uniform fibers without beads, which enhanced the ability of nanofibers for releasing into the aqueous media and enhancing their use in packaging food such as (80:10:10 and 60:20:20). Moreover the blend ratio 60:30:30 (G:CS: PUL) had better resistance to bacterial growth, the inhibition zone diameters were 26 and 23 mm for E. coli and S. aureus and had better average crystalline size and crystallinity.
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抗菌应用的天然生物聚合物水凝胶纳米纤维
本研究采用去离子水和醋酸等合适的溶剂,分别以80:10:10、60:20:20、40:30:30、20:40:40的混合比例,将明胶、壳聚糖、普鲁兰(G: CS: PUL)等聚合物共混物完全溶解。测试了天然聚合物混合物的性能、粘度、表面张力和电导率,并测量了纤维直径和纳米纤维直径分布。将G: CS: PUL中明胶的含量从20%增加到80%,生物聚合物溶液的粘度、表面张力和导电性等性能分别提高了157%、14%和37%。此外,增加明胶含量可使接触角降低55%。也就是说,当明胶含量增加40% ~ 100%时,纳米纤维的平均直径从91.177±27.162 nm增加到212.46±67.91 nm,且纤维均匀无珠,这增强了纳米纤维向水介质释放的能力,提高了纳米纤维在(80:10:10和60:20:20)等食品包装中的应用。混合比60:30:30 (G:CS: PUL)对细菌生长的抑制效果较好,对大肠杆菌和金黄色葡萄球菌的抑制区直径分别为26和23 mm,平均晶粒尺寸和结晶度较好。
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来源期刊
CiteScore
3.00
自引率
0.00%
发文量
30
审稿时长
4.5 months
期刊介绍: Multiscale characterization, modeling, and experiments; High-temperature creep, fatigue, and fracture; Elastic-plastic behavior; Environmental effects on material response, constitutive relations, materials processing, and microstructure mechanical property relationships
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