Author, as appears in the article.: Zare, Alireza; Perna, Lorenza; Nogalska, Adrianna; Ambrogi, Veronica; Cerruti, Pierfrancesco; Tylkowski, Bartosz; Garcia-Valls, Ricard; Giamberini, Marta

Department: Enginyeria Química

URV's Author/s: Garcia Valls, Ricard / Giamberini, Marta / Zare, Alireza

Keywords: Polysulfone Polyethylene imine Carbon dioxide capture Artificial stomata polyethylene imine carbon dioxide capture artificial stomata

Abstract: We investigated the possibility of improving the performance of polysulfone (PSf) membranes to be used in carbon dioxide capture devices by blending PSf with a commercial polyethylene imine, Lupasol G20, previously modified with benzoyl chloride (mG20). Additive amount ranged between 2 and 20 wt %. Membranes based on these blends were prepared by phase inversion precipitation and exhibited different morphologies with respect to neat PSf. Surface roughness, water contact angles, and water uptake increased with mG20 content. Mass transfer coefficient was also increased for both N-2 and CO2; however, this effect was more evident for carbon dioxide. Carbon dioxide absorption performance of composite membranes was evaluated for potassium hydroxide solution in a flat sheet membrane contactor (FSMC) in cross flow module at different liquid flow rates. We found that, at the lowest flow rate, membranes exhibit a very similar behaviour to neat PSf; nevertheless, significant differences can be found at higher flow rates. In particular, the membranes with 2 and 5 wt % additive behave more efficiently than neat PSf. In contrast, 10 and 20 wt % additive content has an adverse effect on CO2 capture when compared with neat PSf. In the former case, a combination of additive chemical affinity to CO2 and membrane porosity can be claimed; in the latter case, the remarkably higher wettability and water uptake could determine membrane clogging and consequent loss of efficiency in the capture device.

Thematic Areas: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física

ISSN: 20734360

Author's mail: ricard.garcia@urv.cat marta.giamberini@urv.cat alireza.zare@urv.cat

Author identifier: 0000-0002-3945-0434 0000-0001-8278-3552 0000-0002-6981-8914

Record's date: 2023-06-09

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2073-4360/11/10/1662

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Polymers. 11 (10):

APA: Zare, Alireza; Perna, Lorenza; Nogalska, Adrianna; Ambrogi, Veronica; Cerruti, Pierfrancesco; Tylkowski, Bartosz; Garcia-Valls, Ricard; Giamberini, Ma (2019). Polymer blends for improved CO2 capture membranes. Polymers, 11(10), -. DOI: 10.3390/polym11101662

Article's DOI: 10.3390/polym11101662

Entity: Universitat Rovira i Virgili

Journal publication year: 2019

Publication Type: Journal Publications