Preparation of porous polyamide 6(PA6)membrane with copper oxide (CuO) nanoparticles selectively localized at the wall of the pores via reactive extrusion
Preparation of porous polyamide 6(PA6)membrane with copper oxide (CuO) nanoparticles selectively localized at the wall of the pores via reactive extrusion
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DOI：
10.1016/j.nanoms.2021.09.002
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发表时间：
2021-09
影响因子：
9.9
通讯作者：
Tian Liang;Jie Liu;Zhaoyang Wei;D. Shi
中科院分区：
文献类型：
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作者：
Tian Liang;Jie Liu;Zhaoyang Wei;D. Shi
在本研究中，用不同分子量和MAH含量的苯乙烯-马来酸酐共聚物（sma）对CuO纳米颗粒进行了预改性。然后将预改性的CuO纳米颗粒（CuO- sma）添加到具有共连续形态的PA6/SEBS（苯乙烯乙烯丁烯苯乙烯共聚物）（40/60 wt/wt）共混物中。当用SMA3 （MAH = 8 wt%, Mn = 250000 g/mol）修饰CuO纳米粒子时，SMA3在CuO表面的接枝度达到2.74 wt%， 90.71%的mCuO-SMA3纳米粒子可以定位在PA6和SEBS的界面上。将SEBS相用二甲苯蚀刻后，可以得到孔壁上有CuO纳米粒子的多孔PA6膜。PA6/mCuO-SMA3多孔膜在nabh4溶液中还原对硝基苯酚的催化反应速度常数k可达1.0040 min-1。这项工作为制备多孔聚合物膜提供了一种可行和直接的方法，该方法将功能纳米颗粒置于孔壁上。
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 CuO 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%, Mn= 250000 g/mol) is used to modify CuO nanoparticles, and the grafting degree of SMA3 on the surface of CuO reaches 2.74 wt%, 90.71% of the added mCuO-SMA3 nanoparticles can be located at the interface of PA6 and SEBS. A porous PA6 membrane with CuO 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 NaBH4solutions with the PA6/mCuO-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.