Crosslinked siloxane-silsesquioxane elastomer with pyrene functionalization for rapid adsorption of benzene, toluene, and xylene (BTX) from water and sensing of charged species
Issued Date
2024-01-01
Resource Type
ISSN
17599954
eISSN
17599962
Scopus ID
2-s2.0-85198108768
Journal Title
Polymer Chemistry
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SCOPUS
Bibliographic Citation
Polymer Chemistry (2024)
Suggested Citation
Bureerug T., Wannasiri C., Chanmungkalakul S., Sukwattanasinitt M., Ervithayasuporn V., Bunchuay T. Crosslinked siloxane-silsesquioxane elastomer with pyrene functionalization for rapid adsorption of benzene, toluene, and xylene (BTX) from water and sensing of charged species. Polymer Chemistry (2024). doi:10.1039/d4py00394b Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/99716
Title
Crosslinked siloxane-silsesquioxane elastomer with pyrene functionalization for rapid adsorption of benzene, toluene, and xylene (BTX) from water and sensing of charged species
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Abstract
A crosslinked siloxane/silsesquioxane elastomer with pyrene functionalization (Py-CSSE) was rapidly synthesised within 10 minutes via a one-pot multicomponent anionic ring-opening polymerization between octamethylcyclotetrasiloxane (methyl D4), octavinylsilsesquioxane (OVS) and a mono-pyrene functionalized SQ cage (Mono-PySQ). The structural characterization of Py-CSSE was conducted using MAS solid-state 29Si and 13C NMR, FTIR, and PXRD techniques. Furthermore, an examination of the mechanical and thermal characteristics was conducted using TGA, DSC, and compressive tests. Py-CSSE demonstrated significant elasticity (a strain of 60% and a pressure of 0.5 MPa) and quickly returned to its former shape without any cracking, even when subjected to a pressure range of up to 40% strain for 3 cycles. The pyrenyl moieties permitted a strong blue fluorescence emission in both the solid-state and in suspension in an organic solvent. The presence of silsesquioxanes, siloxanes, and pyrene moieties concomitantly facilitated its use in cation (Cu2+) and anion (F− and CN−) sensing in polar organic solvents. Importantly, Py-CSSE exhibited efficient adsorption of benzene, toluene, and xylene (BTX) by showing a remarkably high adsorption capacity in the range 28-34 mmol g−1. Py-CSSE exhibited ultrafast adsorption of BTX by showing complete removal of o-xylene within 90 seconds. Furthermore, Py-CSSE surpassed other porous materials in terms of BTX adsorption performance and showed exceptional recyclability for BTX removal, maintaining adsorption effectiveness for at least 5 cycles.