Enhanced gas separation in polyamidoamine dendrimers-embedded Pebax membranes: impact on CO2/N2 selectivity and permeability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00617783" target="_blank" >RIV/61389013:_____/25:00617783 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/25:10498989

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0032386125002010?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0032386125002010?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymer.2025.128215" target="_blank" >10.1016/j.polymer.2025.128215</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced gas separation in polyamidoamine dendrimers-embedded Pebax membranes: impact on CO2/N2 selectivity and permeability

Popis výsledku v původním jazyce

The utilization of polymeric membranes in carbon capture and gas separation has gained increasing attention due to their low energy consumption and high cost-effectiveness. However, a key challenge of balancing membrane permeability and selectivity still remains. This study investigates the enhancement of gas separation performance, specifically CO2/N2 selectivity and permeability, through the incorporation of first (G1) and second (G2) generation poly(amidoamine) (PAMAM) dendrimers into benchmark poly(ether-b-amide) (Pebax) membranes. Membranes were fabricated with varying dendrimer contents (5–15 wt%) via solution casting method. The presence of terminal amine groups in PAMAM dendrimers facilitates CO2 transport via reversible chemisorption, while the dendritic structure enhances surface area for gas interaction. Fourier-transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) revealed that PAMAM forms hydrogen bonds preferentially with Pebax's ‘soft’ poly(ethylene oxide) (PEO) domains, leading to an increase in crystallinity and affecting thermal and mechanical properties. Importantly, gas permeability experiments showed that G1 dendrimer-modified membranes, especially at 10 wt%, exhibited a 16 % improvement in CO2 permeability and an 18 % increase in CO2/N2 selectivity. The G2-modified membranes demonstrated even higher CO2 solubility, although the compact structure of G2 slightly limited gas diffusion. These results highlight the potential of PAMAM-modified Pebax membranes for enhanced CO2 capture, providing insights into the impact of dendrimer generation on gas separation (G1 vs G2) performance.

Název v anglickém jazyce

Enhanced gas separation in polyamidoamine dendrimers-embedded Pebax membranes: impact on CO2/N2 selectivity and permeability

Popis výsledku anglicky

The utilization of polymeric membranes in carbon capture and gas separation has gained increasing attention due to their low energy consumption and high cost-effectiveness. However, a key challenge of balancing membrane permeability and selectivity still remains. This study investigates the enhancement of gas separation performance, specifically CO2/N2 selectivity and permeability, through the incorporation of first (G1) and second (G2) generation poly(amidoamine) (PAMAM) dendrimers into benchmark poly(ether-b-amide) (Pebax) membranes. Membranes were fabricated with varying dendrimer contents (5–15 wt%) via solution casting method. The presence of terminal amine groups in PAMAM dendrimers facilitates CO2 transport via reversible chemisorption, while the dendritic structure enhances surface area for gas interaction. Fourier-transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) revealed that PAMAM forms hydrogen bonds preferentially with Pebax's ‘soft’ poly(ethylene oxide) (PEO) domains, leading to an increase in crystallinity and affecting thermal and mechanical properties. Importantly, gas permeability experiments showed that G1 dendrimer-modified membranes, especially at 10 wt%, exhibited a 16 % improvement in CO2 permeability and an 18 % increase in CO2/N2 selectivity. The G2-modified membranes demonstrated even higher CO2 solubility, although the compact structure of G2 slightly limited gas diffusion. These results highlight the potential of PAMAM-modified Pebax membranes for enhanced CO2 capture, providing insights into the impact of dendrimer generation on gas separation (G1 vs G2) performance.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GA22-22398S" target="_blank" >GA22-22398S: Mikrofluidní a elektronická zařízení pro on-line elektroforetickou analýzu tukové tkáně</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Polymer

ISSN

0032-3861

e-ISSN

1873-2291

Svazek periodika

324

Číslo periodika v rámci svazku

17 April

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

128215

Kód UT WoS článku

001442865300001

EID výsledku v databázi Scopus

2-s2.0-85219707505