消臭抗菌纤维素纤维的制备、结构和性能

采用一种制备消臭、抗菌纤维素纤维的新方法,即先将纤维素纤维用多元羧酸进行化学修饰,然后在铜氨溶液中处理,生成铜螯合纤维素纤维。用红外光谱、电子自旋波谱表征了该纤维的配位结构。消臭和抗菌实验结果显示,这种功能性纤维对硫化氢、氨气、三甲胺的消臭率分别达到100%、92.1%和80.4%。对金黄色葡萄球菌、大肠杆菌和白色念珠菌的抑菌率分别为79.14%、93.59%和82.50%。用X射线衍射、电子自旋波谱分析了该纤维吸附硫化氢、氨气、三甲胺的机理。

抗菌纤维素/纤维素纤维的研究进展

介绍了常用的无机抗菌剂和有机抗菌剂的种类及其抗菌机理,阐述了载银抗菌纤维素、纳米TiO2抗菌纤维素、季铵盐类抗菌纤维素、壳聚糖改性抗菌纤维素等抗菌纤维素及其在纺织工业、膜材料等方面的应用.指出了根据所选抗菌剂的不同,通过化学或物理方法可对纤维素和纤维素纤维进行抗菌改性.绒毛浆是一次性卫生用品吸水性垫层用绒毛化的纤维素纤维,对绒毛浆进行抗菌性改性能够提高绒毛浆的品质和功能.提出了可用于绒毛浆纤维抗菌性改性的抗菌剂和可能的方法,抗菌纤维素纤维改性在绒毛浆生产和应用中存在潜在应用前景.同时,提出了抗菌纤维素/纤维素纤维在生产和应用中存在的问题和解决办法.

“壳聚糖／纤维素抗菌纤维”研究达国际先进水平

天津大学承担的国家自然科学基金项目“壳聚糖／纤维素抗菌纤维应用基础研究”通过市科委组织的专家鉴定。鉴定委员会认为该项研究达到国际先进水平。

人造纤维

新颖抗菌纤维素纤维的生产工艺；天丝是高性能非织造物产品的关键；非织造物用吸湿性改性纤维素纤维；加工热塑性甲硅烷基纤维素生产新型纤维素纤维；对Lyocell纤维成形的观察研究；

Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles

In this work,we describe a novel facile method to prepare long one-dimensional hybrid nanofibers by using hydrated bacterial cellulose nanofibers(BCF)as a template.Silver(Ag)nanoparticles with an average diameter of 1.5 nm were well dispersed on BCF via a simple in situ chemical-reduction between AgNO3and NaBH4at a relatively low temperature.A growth mechanism is proposed that Ag nanoparticles are uniformly anchored onto BCF by coordination with BC-containing hydroxyl groups.The bare BCF and as-prepared Ag/BCF hybrid nanofibers were characterized by several techniques including transmission electron microscopy,X-ray diffraction,thermogravimetric analyses,and ultraviolet-visible(UV-Vis)absorption spectra.The antibacterial properties of Ag/BCF hybrid nanofibers against Escherichia coli(E.coli,Gram-negative)and Staphylococcu saureus(S.saureus,Gram-positive)bacteria were evaluated by using modified Kirby Bauer method and colony forming count method.The results show that Ag nanoparticles are well dispersed on BCF surface via in situ chemical-reduction.The Ag/BCF hybrid nanofiber presents strong antibacterial property and thus offers its candidature for use as functional antimicrobial agents.