含胍抗菌聚酯纤维的制备及其性能

Preparation and properties of guanidine-containing antibacterial polyester fibers

为使聚酯纤维获得较持久的抗菌性,以三氟甲磺酸锌为催化剂,三乙胺为碱剂,四氢呋喃为溶剂,在90℃将不同种类的天然氨基酸乙酯盐酸盐分别与碳二亚胺化合物进行反应,得到系列环状胍衍生物2-胺基咪唑酮,然后将其与聚酯切片进行共混纺丝得到各种不同胍含量的抗菌聚酯纤维,并对抗菌剂的结构以及抗菌聚酯纤维的性能进行分析。结果表明:所制得的抗菌聚酯纤维对大肠杆菌、金黄色葡萄球菌和白色念珠菌等微生物具有很好的抑制和抵抗效果,且抗菌效果随抗菌聚酯纤维中抗菌剂胍的质量分数的增加而增大,当胍单体质量分数达到1. 5%时,抗菌效果基本达到最好;抗菌剂在纤维中分布均匀,添加适量的胍单体对聚酯纤维的力学性能及后续染整加工影响不大。

In order to endue polyester fibers with more durable antibacterial properties,using zinc trifluoromethanesulfonate as the catalyst,Et 3N as the alkali agent and tetrahydrofuran as the solvent,a series of 2-amidazolidone compounds were synthesized by reacting natural amino acid ethyl ester hydrochlorides with different carbodiimides at 90 ℃.Blended antibacterial polyster fibers were prepared by melt spinning,the structure of 2-amidazolidone compounds and bacteria polyster fibers were characterized,and the properties were analyzed.The results show that the antibacterial fibers have good antibacterial activity against Escherichia coli,Staphylococcus aureus and Candida albicans, and the antibacterial effect increases with the increase of the content of guanidine in antibacterial fibers.When the mass fraction of guanidine monomer reaches 1.5%,the greatest antibacterial effect is achieved.At the same time,the distribution of antibacterial agents in the fibers is even,and the added guanidine monomer of proper amount has little effect on the mechanical properties and dyeing and finishing of the fibers.