The current investigation was to present composite membranes with strong interfacial adhesion between top polymeric selective layer and the bottom micro-porous support layer with appropriate gas permeation behavior and practically suitable processing characteristics. To this end, a series of acrylate-terminated polyurethanes (APUs) based on poly (ethylene glycol) (PEG) with different molecular weights (Mn) of 600, 1000, 1500, 2000 and 4000 g/mol, toluene diisocyanate (TDI), and 2-hydroxyethyl methacrylate (HEMA) were synthesized. Composite membranes were prepared with UV-curable acrylate-terminated polyurethane/acrylate diluent (APUAs) as selective layer and polyester/polysulfone (PS/PSF) as support layer. FTIR-ATR and DSC analyses indicated that the micro-phase separation of soft and hard segments increased by increasing the molecular weight of PEG. The experimental results revealed that the gas permeation behavior of APUA was mostly similar with rubbery materials; however, its morphological characteristics such as degree of micro-phase separation and crosslinking density are influential for the overall gas permeation behavior. It was revealed that the adhesion of APUA membranes to support layer was found to be strong and did not deteriorate after swelling in water. APUA composite membranes also exhibited very good long term gas permeation stability due to its stable structure originated from the cross-linked network.

当前的研究是提出一种复合膜，该复合膜在顶部聚合物选择层和底部微孔支撑层之间具有强界面粘合性，并具有适当的气体渗透行为和实用上合适的加工特性。为此，一系列基于不同分子量（Mn）为600、1000、1500、2000和4000 g / mol的聚（乙二醇）（PEG）的丙烯酸酯封端的聚氨酯（APU），甲苯二异氰酸酯（TDI） ，并且合成了甲基丙烯酸2-羟乙酯（HEMA）。用紫外线固化的丙烯酸酯封端的聚氨酯/丙烯酸酯稀释剂（APUAs）作为选择层和聚酯/聚砜（PS / PSF）作为支撑层来制备复合膜。FTIR-ATR和DSC分析表明，软链段和硬链段的微相分离通过增加PEG的分子量而增加。实验结果表明，APUA的气体渗透行为与橡胶状材料基本相似。然而，其形态特征如微相分离度和交联密度对整体气体渗透行为有影响。发现在水中溶胀后，发现APUA膜对支撑层的粘附力强并且不会劣化。APUA复合膜由于其源自交联网络的稳定结构，还表现出非常好的长期气体渗透稳定性。其形态特征，如微相分离程度和交联密度，对整体气体渗透行为有影响。发现在水中溶胀后，发现APUA膜对支撑层的粘附力强并且不会劣化。APUA复合膜由于其源自交联网络的稳定结构，还表现出非常好的长期气体渗透稳定性。其形态特征，如微相分离程度和交联密度，对整体气体渗透行为有影响。发现在水中溶胀后，发现APUA膜对支撑层的粘附力强并且不会劣化。APUA复合膜由于其源自交联网络的稳定结构，还表现出非常好的长期气体渗透稳定性。