Hu, Min; Ding, Liang; Shehzad, Muhammad A.; Ge, Qianqian; Liu, Yahua; Yang, Zhengjin; Wu, Liang; Xu, Tongwen published the artcile< Comb-shaped anion exchange membrane with densely grafted short chains or loosely grafted long chains?>, Name: 1-(Chloromethyl)-4-vinylbenzene, the main research area is comb shaped anion exchange membrane densely grafted chain.
Anion exchange membranes (AEMs) are crucial components for advanced energy and environment processes including alk. fuel cells, redox flow batteries, and industrial effluent treatment; while low anionic conductivity and poor stability remain the major challenges for the widespread implementation of AEMs. Through mol. engineering, comb-shaped AEMs have been proved possessing the capability of delivering both high conductivity and good alk. stability. However, how to precisely control the side chain topol. and how the chain topol. would influence the membrane properties need to be further elucidated. We hereby propose a radically novel and readily scalable route towards the controllable synthesis of comb-shaped AMEs and we were able to determine the length of side chains and the number of ionic groups along the side chains. To probe the effect of side chain topol. on membrane properties, two types of AEMs of densely grafted short side chains or loosely grafted long side chains with similar ion exchange capacity (IEC, ∼1.7 mmol/g) were synthesized and compared. We found that the comb-shaped AEMs with loosely grafted long chains (LG-LS-DIm), with higher hydroxide conductivity (55 mS cm-1 at 30 °C) and better alk. stability (∼80 % of IEC retention after soaking in 2 mol L-1 NaOH solution at 60 °C for 25 days), outperform those with densely grafted short chains (HG-SS-DIm) and the benchmark main-chain type AEMs (DIm-PPO), which is also superior to those of conventional linear AEMs with densely functionalized structure.
Journal of Membrane Science published new progress about Acrylic polymers, polyoxyphenylene-, graft Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), SPN (Synthetic Preparation), TEM (Technical or Engineered Material Use), PROC (Process), PREP (Preparation), USES (Uses). 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Name: 1-(Chloromethyl)-4-vinylbenzene.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics