Enhanced gas separation in polyamidoamine dendrimers-embedded Pebax membranes: impact on CO2/N2 selectivity and permeability
The result's identifiers
Result code in 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>
Alternative codes found
RIV/00216208:11310/25:10498989
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Enhanced gas separation in polyamidoamine dendrimers-embedded Pebax membranes: impact on CO2/N2 selectivity and permeability
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/GA22-22398S" target="_blank" >GA22-22398S: Microfluidic and electronic devices for on-line electrophoretic analysis of adipose tissue</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer
ISSN
0032-3861
e-ISSN
1873-2291
Volume of the periodical
324
Issue of the periodical within the volume
17 April
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
128215
UT code for WoS article
001442865300001
EID of the result in the Scopus database
2-s2.0-85219707505