Dense and translucent CA/PEG 1000/ZIF membranes were synthesized in acetone, utilizing solution casting. Membrane characterization was carried out using FT-IR, SEM and tensile testing. SEM proved presence of dense membranes and increase in the filler amount may have formed voids, raising the permeability of both gases. Single and mixed gas (CO₂/CH₄) permeation testing showed an increased permeability, on addition of more filler, which is probably due to formation of nano-gaps. A maximum selectivity of 39.49 and 34.86 for single and mixed gases respectively, and maximum permeabilities of 49.7685 and 1.41 barrers were observed. Tensile testing showed that strength peaked then decreased on increased loading, due to agglomeration on adding more ZIF, which introduced defects in structure. To conclude, selectivity of higher loaded membranes is favourable whereas tensile strength of lower loaded membrane is superior, but we have a trade-off between selectivity and tensile strength, so a higher-loaded membrane is most suitable.

利用溶液浇铸在丙酮中合成致密且半透明的 CA/PEG 1000/ZIF 膜。使用 FT-IR、SEM 和拉伸测试对膜进行表征。SEM 证明致密膜的存在和填料量的增加可能会形成空隙，从而提高两种气体的渗透性。单一和混合气体（CO ₂ /CH ₄) 渗透测试表明，添加更多填料后渗透率增加，这可能是由于形成了纳米间隙。观察到单一气体和混合气体的最大选择性分别为 39.49 和 34.86，最大渗透率为 49.7685 和 1.41 barrers。拉伸测试表明，由于添加更多 ZIF 会导致结块，从而在结构中引入缺陷，因此强度在增加载荷时达到峰值然后下降。总而言之，高负载膜的选择性是有利的，而低负载膜的拉伸强度更好，但我们在选择性和拉伸强度之间进行权衡，因此高负载膜是最合适的。