羊毛织物类芬顿氧化防毡缩整理OA

Wool fabric is prone to felting under hot and humid conditions due to the scale layer structure,impairing its appearance and durability.A novel Fenton-like oxidation system for anti-felting treatment of wool fabric was proposed in this study.The composite catalyst,prepared by loading Fe3O4 onto chitosan(CS)and hydroxyapatite(HA),denoted as CS/HA/Fe3O4,was used to catalyze H2O2 to generate free radicals,thereby reducing felting shrinkage by destroying the scale structure of wool fibers.The optimal reaction conditions were determined as CS/HA/Fe3O4 4.5％on mass of fabric(omf),H2O2 30.0％omf,1-hydroxyethylidene-1,1-diphosphonic acid(HEDP)18.0％omf,and Na2CO3 5.0％omf.Fourier transform infrared(FTIR),scanning electron microscopy(SEM),and water contact angle(WCA)characterizations confirmed that the Fenton-like treatment effectively cleaved wool disulfide bonds,stripped surface scales,and reduced hydrophobicity.Preliminary reusability tests of the CS/HA/Fe3O4 composite catalyst showed that after three cycles,the felting shrinkage rate of wool fabric slightly increased from 4.0％to 4.7％,which still met the international standard(≤5.0％).