Influence of functional group concentration on hypercrosslinking of poly(vinylbenzyl chloride) PolyHIPEs : upgrading macroporosity with nanoporosity

Koler, Amadeja (avtor), Kolar, Mitja (avtor), Jeřábek, Karel (avtor), Krajnc, Peter (avtor)

With the aim to study the influence of monomer ratio in poly(high internal phase emulsions) (polyHIPEs) on the polymer network architecture and morphology of poly(vinylbenzyl chloride-codivinylbenzene-co-styrene) after hypercrosslinking via the internal Friedel–Crafts process, polyHIPEs with 80% overall porosity were prepared at three different initial crosslinking degrees, namely 2, 5, and 10 mol.%. All had typical interconnected cellular morphology, which was not affected by the hypercrosslinking process. Nitrogen adsorption and desorption experiments with BET and t-plot modelling were used for the evaluation of the newly introduced nanoporosity and in combination with elemental analysis for the evaluation of the extent of the hypercrosslinking. It was found that, for all three initial crosslinking degrees, the minimum amount of functional monomer, 4-vinylbenzyl chloride, was approximately 30 mol.%. Hypercrosslinking of polymers with lower concentrations of functional monomer did not result in induction of nanoporosity while the initial crosslinking degree had a much lower impact on the formation of nanoporosity.

• Jezik: Angleški jezik
• Ključne besede: polyHIPE, hypercrosslinking, poly(4-vinylbenzyl chloride), hierarchically porous polymers, nanoporosity, macroporosity
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 10 str.
• Številčenje: Vol. 13, iss. 16, art. 2721
• PID: 20.500.12556/RUL-136174
• UDK: 66.095.26
• ISSN pri članku: 2073-4360
• DOI: 10.3390/polym13162721
• COBISS.SI-ID: 73037315
• Datum objave v RUL: 14.04.2022

Gradivo je del revije

• Naslov: Polymers
• Skrajšan naslov: Polymers
• Založnik: MDPI
• ISSN: 2073-4360
• COBISS.SI-ID: 517951257

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 14.08.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: polimeri, porozni polimeri, nanopolimeri, makroporoznost