Design of functionalized polypropylene non-woven fabric with high β-CD grafting degree for bisphenol a removal: Adsorption performance and resistance.

[Display omitted] • β-CD was modified with maleic anhydride to reduce its grafting hindrance. • The mass transfer resistence of BPA adsorption on PP-g-MAH-β-CD was explored. • A theoretical maximum saturated adsorption capacity of 169.06 mg/g was obtained. • PP-g-MAH-β-CD showed nearly unchanged BPA adsorption capacity in 15 cycles. A large amount of soluble beta-cyclodextrin (β-CD) was immobilized on polypropylene non-woven fabric (PP) by radiation and chemical grafting to obtain PP-g-MAH-β-CD, which can effectively adsorb bisphenol A (BPA) in water. A longer chemical chain was grafted by β-CD through the pre-modification, which effectively reduced the steric hindrance of further grafting reaction and made the grafting degree of β-CD on PP fabric higher. In addition, the adsorption mass transfer resistance of fabrics with different grafting degrees was calculated according to non-equilibrium thermodynamics to explore the effect of grafting degree on adsorption. The characterization results confirmed the successful preparation of PP-g-MAH-β-CD. The theoretical maximum saturated adsorption capacity of PP-g-MAH-β-CD was 146.55 mg/g. PP-g-MAH-β-CD was easy to recycle, and the adsorption capacity did not decrease significantly after 15 cycles of adsorption and desorption experiments. [ABSTRACT FROM AUTHOR]