Abstract: PVA/PA6 composite nanofibers were formed by electrospinning and the reacted with Cd²⁺ solution to prepare Cd²⁺ -PVA/PA6 metal chelated nanofibers. The metal ions (Cd²⁺) concentration was determined by atomic absorption spectrophotometer (AAS); the morphologies were characterized by scanning electronic microscopy (SEM); and the major absorption peaks were assigned by means of Fourier transform infrared (FT-IR) spectrography. The result shows that PVA/PA6 composite nanofibers have excellent adsorption capacity for metals ions such as Cd²⁺ and good shape stability.  The absorption  process and kinetics parameters of metal ions were also studied in this work. The saturated amounts of coordinated Cd²⁺ (Qm) was 4.4643 mmol/g (dry fiber),  the adsorption constant (K_l) was 0.0257 L/mmol ,and the correlation coefficient R²=0.997. The process of reaction was corresponding with Langmuir model.

Key words: PVA, PA6, nanodiber, metal chelated, kinetics