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首页> 外文期刊>Journal of Applied Polymer Science >Surface Modification of Electrospun Chitosan Nanofibrous Mats for Antibacterial Activity
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Surface Modification of Electrospun Chitosan Nanofibrous Mats for Antibacterial Activity

机译：静电纺丝壳聚糖纳米纤维垫的表面修饰

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摘要

Chitosan (CS) blended with poly(ethylene oxide) (PEO) was electrospun into nanofibrous mats. The spinning solution of 6.7:0.3 (% w/v) of CS:PEO was dissolved in a 70:30 (v/v) trifluoroacetic acid/dichloromethane solution. The obtained fibers were smooth without beads on their surfaces and average diameter of the fiber was 272±56 nm. N-(2-hydroxyl) propyl-3-trimethyl ammonium chitosan chloride (HTACC) and N-benzyl-N,N-dimethyl chitosan iodide (QBzCS) were each prepared from the CS/PEO mats. They were identified by Fourier-transform infrared and X-ray photoelectron spectroscopy and degree of swelling in water. Both quaternized electrospun chitosan mats exhibited superior antibacterial activity to the unmodified electrospun CS/PEO against Staphylococcus aureus and Escherichia coli at short contact times. After 4 h of contact, the reduction of both bacterial strains by CS/PEO, HTACC, and QBzCS was equal at about 99-100%. VC 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40981.
机译：将与聚环氧乙烷（PEO）混合的壳聚糖（CS）电纺成纳米纤维毡。将6.7：0.3（％w / v）的CS：PEO纺丝溶液溶解在70:30（v / v）的三氟乙酸/二氯甲烷溶液中。所获得的纤维是光滑的，在其表面上没有珠子，并且纤维的平均直径为272±56nm。 N-（2-羟基）丙基-3-三甲基壳聚糖氯化铵（HTACC）和N-苄基-N，N-二甲基壳聚糖碘化物（QBzCS）分别由CS / PEO垫制成。它们通过傅立叶变换红外和X射线光电子能谱以及在水中的溶胀度来鉴定。两种季铵化的静电纺丝壳聚糖垫在较短的接触时间内均表现出优于未修饰的静电纺丝CS / PEO的抗金黄色葡萄球菌和大肠杆菌的抗菌活性。接触4小时后，CS / PEO，HTACC和QBzCS对两种细菌菌株的减少程度均相等，约为99-100％。 VC 2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2014，131，40981。

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