Preparation of porous polyamide 6(PA6)membrane with copper oxide(CuO) nanoparticles selectively localized at the wall of the pores via reactive extrusionOA附视频

In this study, CuO nanoparticles are pre-modified with styrene-maleic anhydride copolymers（SMAs） of different molecular weights and MAH contents. Then the pre-modified Cu O nanoparticles（CuO-SMAs） are added to the PA6/SEBS（Styrene Ethylene Butylene Styrene copolymer）(40/60 wt/wt) polymer blends with a co-continuous morphology. When SMA3（MAH = 8 wt%, M_n= 250000 g/mol） is used to modify Cu O nanoparticles, and the grafting degree of SMA3 on the surface of Cu O reaches 2.74 wt%, 90.71% of the added m Cu O-SMA3 nanoparticles can be located at the interface of PA6 and SEBS. A porous PA6 membrane with Cu O nanoparticles located at the pore walls can be obtained after the SEBS phase is etched with xylene. The catalytic reaction velocity constant（k） for the reduction of p-nitrophenol in Na BH4 solutions with the PA6/m Cu O-SMA3 porous membrane can reach 1.0040 min-1. This work provides a feasible and straightforward method for the preparation of porous polymer membranes with functional nanoparticles located at the wall of the pores.