Construction of Collagen Methacrylamide Microspheres to Modify Nonwoven Polyamide Fibers Based on Click Chemistry

Using waste leather collagen, collagen microspheres with “–CH═CH2” (CMAs) were prepared using the emulsification cross-linking method and then incorporated into a nonwoven polyamide fiber material with the “thiol–ene” click chemistry method to obtain modified nonwoven polyamide fibers (PA-CMAs). Experiments showed that for a CMA concentration of 6 wt %, initiator concentration of 0.008 wt %, and irradiation time of 5 h, the grafting rate can reach 25.83%. Scanning electron microscope (SEM) and X-ray photoelectron spectrometer (XPS) are used to confirm the successful grafting of CMAs onto nonwoven PA materials. The stability and fastness test was used to show that PA-CMAs have good stability with acid, alkali, organic solvent resistance, and rubbing resistance. The contrast test indicated that the moisture absorption and permeability of PA-CMAs were better than those of nonwoven polyamide/polyurethane (PA/PU), which is a synthetic leather-based material considered as one of the mainstream products. In addition, PA-CMAs maintained the original softness and elastoplasticity of PA.