Nanofilm Composite Membranes of Bottlebrush Poly(1,3‐Dioxolane) Plasticized by Poly(Ethylene Glycol) for CO₂/N₂ Separation

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 30, 2025

Abstract Poly(1,3‐dioxolane) has emerged as a leading membrane material for post‐combustion CO 2 capture due to its high ether oxygen content and strong affinity toward . However, they are often cross‐linked inhibit crystallization, which makes them impossible fabricate into industrial thin‐film composite membranes. Herein, soluble molecular weight bottlebrush polymers ( b PDXLA) synthesized using reversible addition‐fragmentation chain transfer polymerization demonstrate the feasibility of fabricating nanofilm (≈100 nm) membranes (NCMs). Furthermore, PDXLA can be plasticized miscible additive poly(ethylene glycol) dimethyl (PEGDME) improve permeability while retaining good /N selectivity. For example, adding 20 mass% PEGDME improves permeance from 930 1300 GPU decreases selectivity 74 53 at 25 °C; exhibits stable separation performance competitive with state‐of‐the‐art commercial This work unveils practical approach designing uncross‐linked, highly polar gas highlights facile way enhance by incorporating plasticizers manufacturing processes.

Язык: Английский

Highly porous polysalicylates via Grignard reagent triggered “three-in-one” polyesterification and their high-loading nanocomposite membranes for gas separation

Journal of Membrane Science, Год журнала: 2025, Номер unknown, С. 124232 - 124232

Опубликована: Май 1, 2025

Язык: Английский