Abstract Hybrid membranes were prepared using amino-functionalized Polyhedral Oligomeric SilSesquioxanes (POSS ® ) nanoparticles, with polyvinyl alcohol (PVA) and dip coated on Polyphenylene Oxide (PPO) as support. Different functionalities of amino and amidino POSS ® have been developed and evaluated for CO 2 /N 2 separation in order to understand the polymer/nanoparticle interaction and their impact on the CO 2 transport mechanism. CO 2 absorption and desorption studies were carried out to understand the chemical behavior of the CO 2 transport phenomena in solution. The as-obtained hybrid selective membrane materials were analyzed using various techniques, such as TGA, DSC, FT-IR, and XRD, while the gas permeation properties were evaluated in a CO 2 /N 2 mixture at room temperature. The membranes prepared with the amino- and amidino-functionalized particles show a CO2 permeability of 0.53 and 0.71 m 3 (STP)/m 2 bar h, respectively at a CO 2 /N 2 selectivity of around 40. Differences are explained through CO 2 absorption and desorption studies performed in solution showing a higher CO2 cyclic capacity for the amidino particles. However, when comparing these results with the bare PPO/PVA system, no clear advantageous effect of the addition of the nanoparticles was observed. Due to the interaction of the nanoparticles with the polymer matrix, the particles do not exhibit a carrier transport in the composite membranes. The addition of the amino and amidino POSS ® showed that the expected increase in CO 2 permeance is not reached due to the interaction of the nanoparticles with the polymer matrix. Moreover, the amino & amidino POSS ® do not exhibit a carrier transport in the composite membranes.

中文翻译：

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用于 CO 2 /N 2 分离的基于 PVA 的混合膜中氨基和脒基官能化多面体低聚倍半硅氧烷 (POSS ® ) 纳米粒子的研究

摘要 使用氨基官能化的多面体低聚倍半硅氧烷 (POSS ® ) 纳米粒子制备混合膜，以聚乙烯醇 (PVA) 和浸涂在聚苯醚 (PPO) 上作为载体。为了了解聚合物/纳米颗粒相互作用及其对 CO 2 传输机制的影响，已经开发和评估了氨基和脒基 POSS ® 的不同功能，用于 CO 2 /N 2 分离。进行CO 2 吸收和解吸研究以了解溶液中CO 2 传输现象的化学行为。使用各种技术分析所获得的混合选择性膜材料，例如 TGA、DSC、FT-IR 和 XRD，同时在室温下在 CO 2 /N 2 混合物中评估气体渗透性能。使用氨基和脒基官能化颗粒制备的膜在 CO 2 /N 2 选择性约为 40 时分别显示 0.53 和 0.71 m 3 (STP)/m 2 bar h 的 CO2 渗透率。通过 CO 2 解释差异在溶液中进行的吸收和解吸研究表明脒基颗粒具有更高的 CO2 循环容量。然而，当将这些结果与裸 PPO/PVA 系统进行比较时，没有观察到添加纳米颗粒的明显有利影响。由于纳米颗粒与聚合物基质的相互作用，颗粒在复合膜中不表现出载流子传输。添加氨基和脒基 POSS ® 表明，由于纳米颗粒与聚合物基质的相互作用，未达到预期的 CO 2 渗透性增加。此外，氨基&