Lee Hwa Jin, Kang Sang Wook
Department of Chemistry, Sangmyung University, Seoul 03016, Korea.
Department of Chemistry and Energy Engineering, Sangmyung University, Seoul 03016, Korea.
Polymers (Basel). 2020 Jun 17;12(6):1363. doi: 10.3390/polym12061363.
Polymer composite membranes containing aniline were prepared for CO/N separation. Aniline was selected for high separation performance as an additive containing both the benzene ring to interfere with gas transport and an amino group that could induce the accelerated transport of CO molecules. As a result, when aniline having both a benzene ring and an amino group was incorporated into polymer membranes, the selectivity was largely enhanced by the role of both gas barriers and CO carriers. Selective layers coated on the polysulfone were identified by scanning electron microscopy (SEM) images and the interaction with aniline in the polymer matrix was confirmed by FT-IR spectroscopy. The binding energy of oxygen in the polymer matrix was investigated by XPS, and the thermal stability of the composite membrane was confirmed by TGA.
制备了含苯胺的聚合物复合膜用于CO/N分离。选择苯胺作为添加剂是因为其具有较高的分离性能，它既含有苯环可干扰气体传输，又含有氨基可诱导CO分子加速传输。结果，当同时含有苯环和氨基的苯胺被引入聚合物膜中时，由于气体阻隔和CO载体的作用，选择性大大提高。通过扫描电子显微镜（SEM）图像确定了涂覆在聚砜上的选择性层，并通过傅里叶变换红外光谱（FT-IR）证实了其与聚合物基质中苯胺的相互作用。通过X射线光电子能谱（XPS）研究了聚合物基质中氧的结合能，并通过热重分析（TGA）证实了复合膜的热稳定性。
