The zeolite loading nano-CdS particles (M-CdS) were prepared by situ-reaction between CdCl

2

absorbed in zeolite and Na

2

S solutions

and then were used to modify PE in order to get functional polymer composites. The optical properties and crystallization behavior were characterized by UV-Vis

PL and DSC analyses

respectively. The results showed that PE/M-CdS composites exhibited an obviously fluorescence emission in 540~550 nm

the emission shifted to longer wavelength and the intensity improve first

and then became weak with the increase of M-CdS contents. But the absorption strength between 280 nm and 325 nm in UV-Vis spectra of PE/M-CdS composites increased with the increment of M-CdS contents

at the same time the crystallization degree and melt enthalpy decrease. M-CdS showed the heterogeneous nucleation effect on PP/M-CdS composites

which displayed a higher crystallization temperature than PP.