Adsorption Performance of Human-Like Collagen by Alkali-Modified Kapok Fiber: A Kinetic, Equilibrium, and Mechanistic Investigation

This study investigated the adsorption performance of alkali-modified Kapok fiber for human-like collagen, aiming to improve collagen-based dressings. The modification process involved alkali treatment, which altered the fiber's surface to become rough and hydrophilic, significantly increasing its adsorption capacity from 0.6 g/g to 12.6 g/g. The adsorption process followed both physisorption and chemisorption kinetics, and a three-step diffusion model was identified. These findings suggested that alkali-modified Kapok fiber could be a promising material for collagen-based dressings due to its enhanced adsorption properties.