A novel anion exchange membrane based on silicone/polyphenylene oxide with excellent ionic conductivity for AEMFC was written by Liu, Qian;Wang, Zhe;Sui, Zhiyin;Shui, Tianen;Wang, Song. And the article was included in Polymers for Advanced Technologies in 2022.HPLC of Formula: 128-08-5 This article mentions the following:
To achieve good stability of anion-exchange membranes. We report an organic-inorganic composite anion exchange membrane based on polyphenylene oxide (PPO) and 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane to improve dimensional stability and mech. stability without affecting ionic conductivity The successful synthesis of the membranes was confirmed by FT-IR, 1H NMR, and EDX. The SiOSi three-dimensional network cross-linked structure was formed inside the anion-exchange membranes by added inorganic fillers. It suppressed the swelling behavior of the membrane after water uptake, with water uptake rate of 48.2%-55.6% and swelling rate of 3.1%-14.2%. It improved the mech. strength of the membranes with tensile strength of 33.5-37.8 MPa as the ratio of the membrane structure varied. Meanwhile, the flexible chain segments in the polymer structure contributed to the formation of microscopic phase separation structures, and the constructed ion-conducting channels enabled QPPO-Si-5 to reach the highest hydroxide ion conductivity of 78.7 mS/cm at 80°C (ion exchange capacity [IEC] value of 1.2 mmol/g). QPPO-Si-1 exhibited better long-term chem. stability, retaining 48.3% of the initial conductivity (30.8 mS/cm) after 600 h of alkali stability testing at 80°C in 1 M KOH solution In conclusion, the results of this study provide a facile synthetic strategy with improved membrane′s comprehensive performance. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5HPLC of Formula: 128-08-5).
1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.HPLC of Formula: 128-08-5
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary