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Formation of Porous Polymer Morphology by Microsyneresis During Divinylbenzene Polymerization
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SYSNO ASEP 0443627 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Formation of Porous Polymer Morphology by Microsyneresis During Divinylbenzene Polymerization Tvůrce(i) Hanková, Libuše (UCHP-M) RID
Holub, Ladislav (UCHP-M) RID
Jeřábek, Karel (UCHP-M) RID, ORCID, SAIZdroj.dok. Journal of Polymer Science. Part B, Polymer Physics . - : Wiley - ISSN 0887-6266
Roč. 53, č. 11 (2015), s. 774-781Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova crosslinking ; macroporous polymers ; mesopores Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství CEP LH12194 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000353339900002 EID SCOPUS 84928153089 DOI 10.1002/polb.23693 Anotace This article describes the investigation of the importance of various reaction conditions on microsyneretic pore formation during polymerization of divinylbenzene (DVB) under so-called “solvothermal” conditions. In order to induce microsyneretic pore formation, the most important parameter is an unusually high dilution of monomers with a “good” porogen solvating the polymer chains. High dilution and solvation of the growing poly(DVB) chains promotes the prolongation of the polymer chains rather than their interconnection by crosslinking. Consequently, when the polymer gel density reaches the point where syneresis starts, the polymer network is geometrically too extensive to be broken up into precipitating entities and, instead, porogen droplets are formed within the continuous polymer gel. The pore geometry created by microsyneresis offers high surface area in wide mesopores and hence, high capacity for supporting functional groups or reactions with much better accessibility than narrow pores between polymer microspheres produced by macrosyneresis in conventional styrenic polymer supports. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2016
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