季铵盐改性偕胺肟基羊毛纤维的制备及抗菌性表征

Modification of Amidoxime Functionalized Wool Fibers with Quaternary Ammonium Salt

采用过氧化氢—抗坏血酸氧化还原体系引发丙烯腈和甲基丙烯酰氧乙基三甲基氯化铵在羊毛纤维上进行接枝共聚,考察了各因素对接枝率的影响。对接枝改性羊毛进行了傅里叶变换红外光谱(FTIR)、X射线光电子能谱(XPS)和扫描电镜(SEM)考察。结果显示,两种单体均成功被接枝到羊毛纤维上。反应在pH5,氧化剂和还原剂的质量分数分别为0.30%,0.42%,单体用量15%,温度50℃时反应2 h,接枝率可达70%。季铵盐的引入可以提高羊毛纤维的抗菌性。

Acrylonitrile and methacryloyloxyethyl trimethyl ammonium chloride were grafted on wool fibers by a redox initiation system of H_2O_2 and L-ascorbic acid. The parameters affecting on the grafting yield were investigated. The structure and morphology of the samples were analyzed by Fourier Transform Infrared Spectrometer（FT-IR）, X-ray photoelectron spectroscopy（XPS）, and scanning electron microscope（SEM）. The results showed that the two monomers were grafted on wool fibers successfully. The optimal graft reaction were carried out by adding 15% of monomers with the initiation of redox system H_2O_2 and L-ascorbic acid（0.30% and 0.42%） at 50 ℃ for 2 h. The grafting yield could get to 70%. The addition of quaternary ammonium salt could impart the wool fibers with good antibacterial property.