The polyester (PET) fabrics' hydrophilicity can be improved by electron beam (EB) irradiation initiated grafting hydrophilic monomers.But the high regularity and crystallinity of the PET macromolecule structure results in the inferiority in the modification effect and grafting ratio compared to other common synthetic fibers.In this paper,the introduction of plasma pretreatment prior to EB irradiation has been proved to be able to greatly promote the effect of EB irradiation grafting modification according to the tests on the grafting ratio,moisture regain,contact angle,infrared spectrometer,and scanning electron microscopy (SEM) of the PET fabrics without any treatment,the EB irradiated PET fabrics without pretreatment and the EB irradiated PET fabrics with plasma pretreatment respectively.The results showed that the grafting ratio increased by 1.64 times,the moisture regain increased by 75 ％,and the contact angle decreased quickly from 87.95°to an unmeasurable small value,indicating the further improved hydrophilicity compared with the modified PET fabrics without plasma pretreatment.In addition,the influences of strength loss and the decrease of whiteness due to the plasma pretreatment on PET fabrics are almost negligible.%利用电子束辐照接枝亲水性单体可提高涤纶织物的亲水性,但涤纶大分子本身结构规整且结晶度较高,造成改性时接枝率偏低,引入预处理可以提高改性效果.先通过正交试验得到等离子体预处理的最佳方案,再分别对涤纶织物原样、无预处理接枝改性和经等离子体预处理后接枝改性的涤纶织物进行接枝率、回潮率、接触角、红外光谱(FT-IR)及扫描电子显微镜(SEM)的测试,结果表明,相比无预处理直接进行接枝改性的涤纶织物,增加等离子体预处理可以使接枝率提高1.64倍,回潮率增加75％,接触角也由87.95°急剧减小以至于无法测出具体数值,亲水性有了更为明显的改善.此外,断裂强力和白度测试结果也表明,辐照接枝前引入等离子体预处理对涤纶织物的物理性能影响较小,均在可接受范围内.
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