亲水抗菌聚酯纤维的研究

Research of hydrophilic antibacterial polyester fiber

采用精对苯二甲酸(PTA)、乙二醇(EG)与多羟基化合物共聚,制得亲水聚酯(PET)切片,将该亲水PET与银系抗菌母粒共混纺丝,制得亲水抗菌PET纤维,并对其性能进行了研究。结果表明:加入相对PTA质量分数为0.8%的多羟基化合物,亲水PET的亲水性能较好,表面接触角为53.5°,特性黏数为0.591dL/g;亲水抗菌PET纺丝温度比常规PET切片低15～20℃;添加银系抗菌剂质量分数为10%的亲水抗菌PET纤维有较佳的抗菌性能,对金黄色葡萄球菌和大肠杆菌的抗菌率均大于99%,抗菌活性值均大于2,断裂强度为2.6 cN/dtex,回潮率约0.8%。

A hydrophilic antibacterial polyester（PET） fiber was prepared by blend spinning silver antibacterial masterhatch and hydrophilic PET chip which was prepared from purified terephthalic acid （PTA）, ethylene glycol （EG） and polyhydroxy com- pound by copolymerization reaction. The properties of the fiber were studied. The results showed that the hydrophilic PET chip had the fairly good hydrophilic property, surface contact angle of 53.5~ and intrinsic viscosity 0. 591 dL/g while adding 0.8% polyhydroxy compound based on PTA by mass fraction; the hydrophilic antibacterial PET fiber had good antibacterial property, the antibacterial rate against Escherichia coil and Staphlococcus aureus above 99% , the antibacterial activity above 2, breaking strength of 2.6 cN/dtex and moisture regain about 0.8% while adding 10% silver antibacterial agent by mass fraction and spinning at the temperature 15 -20 ℃ lower than that for traditional PET chip.