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Chemical Interactions of Surface-Active Agents with Growing Resorcinol-Formaldehyde Gels
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SYSNO ASEP 0348835 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Chemical Interactions of Surface-Active Agents with Growing Resorcinol-Formaldehyde Gels Tvůrce(i) Jirglová, Hana (UFCH-W) RID, ORCID
Maldonato-Hódar, F. J. (ES)Zdroj.dok. Langmuir. - : American Chemical Society - ISSN 0743-7463
Roč. 26, č. 20 (2010), s. 16103-16109Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova chemical interactions ; FTIR ; physical chemistry Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000282936700055 DOI 10.1021/la102499h Anotace The influence of cationic, anionic, and nonionic surfactants (S) on the characteristics of carbon xerogels was analyzed. The polymerization of resorcinol (R) and formaldehyde (F) was developed in an aqueous solution of S without any additional catalyst. The gels obtained were dried in air to obtain organic xerogels and then carbonized to carbon xerogels. The prepared samples were characterized by FTIR, TG, SEM, and N-2 and CO2 adsorption. The formation of RF-S copolymers was observed for cationic and nonionic surfactants, but this was not observed for anionic S, probably because of repulsive electrostatic interactions between the two organic phases. Nevertheless, anionic S leads to a greater morphological transformation with the formation of nonporous needle particles associated with the higher pH induced by this S. Carbon xerogels are microporous materials with interesting molecular sieve behavior. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2011
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