Manufacture and properties of chitosan/N,O‐carboxymethylated chitosan/viscose rayon antibacterial fibers
Manufacture and properties of chitosan/N,O‐carboxymethylated chitosan/viscose rayon antibacterial fibers
复制标题
DOI：
10.1002/app.10501
复制
发表时间：
2002-06
影响因子：
3
通讯作者：
Zhi Li;Xiaofei Liu;Xupin Zhuang;Y. Guan;K. Yao
中科院分区：
文献类型：
--
作者：
Zhi Li;Xiaofei Liu;Xupin Zhuang;Y. Guan;K. Yao
将壳聚糖乳液、N，O-羧甲基壳聚糖(N，O-CMC)和粘胶纤维共混纺丝，制备了壳聚糖/N，O-羧甲基壳聚糖/粘胶粘胶抗菌纤维(CNVF)。用透射电子显微镜(TEM)、差示扫描量热仪(DSC)和热重分析(TGA)对纤维进行了表征。透射电子显微镜显示，壳聚糖微粒沿纤维取向分布均匀，平均尺寸为0.1~0.5μm。差示扫描量热分析表明，在粘胶粘胶纤维中加入壳聚糖和N，O-羧甲基纤维素对纤维的热性能无明显影响。热重分析表明，壳聚糖和N，O-CMC的加入不影响其良好的保湿性能。DSC和TGA均表明，250℃以上粘胶纤维的分解趋势似乎被壳聚糖削弱。测定了纤维的力学性能和对大肠埃希菌、金黄色葡萄球菌、白色念珠菌的抑菌活性。虽然壳聚糖的加入略微降低了纤维的力学性能，但抗菌纤维的性能得到了改善，达到了商业要求。CNVF对大肠杆菌、金黄色葡萄球菌和白色念珠菌表现出良好的抗菌活性。抗菌活性随壳聚糖浓度的增加而增加，在水中洗涤15次对其影响不大。用扫描电子显微镜观察与抗菌纤维或参比纤维共同孵育的细菌细胞的形态。扫描电子显微镜照片显示，抗菌纤维比参比纤维能吸附更多的细菌；这些细菌被压倒性地摧毁和杀死。2002年威利期刊集团《应用理工学院学报》84：2049-2059,2002年；DOI 10.1002/App.10501
Chitosan/N,O-carboxymethylated chitosan/viscose rayon antibacterial fibers (CNVFs) were prepared by blending chitosan emulsion, N,O-carboxymethylated chitosan (N,O-CMC), and viscose rayon together for spinning. The fibers were characterized by transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA). TEM micrographs showed that chitosan microparticles dispersed uniformly along the oriented direction with the mean size ranging from 0.1 to 0.5 μm. DSC spectra of these fibers showed that no significant change in thermal property was caused by adding chitosan and N,O-CMC into the viscose rayon. TGA spectra showed that the good moisture retentivity was not affected by the addition of chitosan and N,O-CMC. Both DSC and TGA suggested that the decomposing tendency of the viscose rayon above 250°C seemed to be weakened by the chitosan. The fibers' mechanical properties and antibacterial activities against Escherchia coli,Staphylococcus aureus, and Candida albicans were measured. Although the addition of chitosan slightly reduced the mechanical properties, the antibacterial fibers' properties were obtained and were found to meet commercial requirements. CNVF exhibited excellent antibacterial activity against E. coli,S. aureus, and C. albicans. The antibacterial activity increased along with the chitosan concentration and was not greatly affected by 15 washings in water. Scanning electron microscopy (SEM) was used to observe the morphology of bacteria cells incubated together with the antibacterial or reference fibers. SEM micrographs demonstrated that greater amounts of bacteria could be adsorbed by the antibacterial fiber than by the reference fiber; these bacteria were overwhelmingly destroyed and killed. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 84: 2049–2059, 2002; DOI 10.1002/app.10501