Development Of Polyphenylene Sulfide Porous Carbon Mixed Matrix Membranes For Carbon Dioxide Separation

Junaidi, Afdhal (2025) Development Of Polyphenylene Sulfide Porous Carbon Mixed Matrix Membranes For Carbon Dioxide Separation. Doctoral thesis, Insititut Teknologi Sepuluh Nopember.

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Abstract

Polyphenylene sulfide (PPs) is a promising candidate for membrane-based gas separation, particularly for carbon dioxide (CO2) separation, due to its sulfur functional group, which exhibits strong interactions with CO2. However, conventional processing to fabricate PPs membrane is complex and energy-intensive. To improve the feasibility of PPs utilization, this project proposes a more accessible approach by employing it as a filler in mixed matrix membranes (MMMs) for CO2 separation. Given the limited studies on gas interactions with PPs, this project begins with an adsorption study to investigate its interaction behavior with different gases. The kinetic and thermodynamic study showed a strong affinity toward CO2 compared to N2 and CH4 due to polar sulfide groups. These particles were then incorporated into a polysulfone (PSf) matrix, resulting in an increase in CO2 permeability, from 4.75 to 22.63 Barrer in flat-sheet membranes and up to 42.94 Barrer in hollow fibers. Further performance enhancement was achieved using P84 matrix, where CO2 permeability improves from 74.45 to 299.03 Barrer at 5% filler loading and better compatibility based on d-spacing value. PPs was further developed into a more advanced material, self S-doped porous carbon (PCs), via a one-step synthesis approach. The optimal synthesis condition yielded a material with a well-balanced porous structure, high surface area, and abundant sulfur species. The incorporation of PCs into P84-based MMMs significantly improved gas separation performance and compatibility. The most promising membrane, P84/PCs 5%, achieved a CO2 permeability of up to 534.47 Barrer. Moreover, the membrane demonstrated excellent long-term stability, with less than 6% performance decline after 60 minutes of continuous operation. These findings confirm the feasibility of simplifying PPs utilization and highlight the potential of self S-doped porous carbon as a high-performance, scalable filler for CO2 membrane separation.

Item Type:	Thesis (Doctoral)
Uncontrolled Keywords:	Polyphenylene sulfide, S-dopes, porous carbon, gas adsorption, gas separation.
Subjects:	Q Science > QD Chemistry > QD281 Pyrolysis Q Science > QD Chemistry > QD502 Chemical kinetics Q Science > QD Chemistry > QD63.S4 Separation (Technology)
Divisions:	Faculty of Mathematics and Science > Chemistry > 47001-(S3) PhD Thesis
Depositing User:	Afdhal Junaidi
Date Deposited:	07 Aug 2025 03:19
Last Modified:	07 Aug 2025 03:19
URI:	http://repository.its.ac.id/id/eprint/127810

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