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Formation of Porous Polymer Morphology by Microsyneresis During Divinylbenzene Polymerization

SYSNO ASEP	0443627
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Formation of Porous Polymer Morphology by Microsyneresis During Divinylbenzene Polymerization
Author(s)	Hanková, Libuše (UCHP-M)_RID Holub, Ladislav (UCHP-M)_RID Jeřábek, Karel (UCHP-M)_{RID, ORCID, SAI}
Source Title	Journal of Polymer Science. Part B, Polymer Physics . - : Wiley - ISSN 0887-6266 Roč. 53, č. 11 (2015), s. 774-781
Number of pages	8 s.
Language	eng - English
Country	US - United States
Keywords	crosslinking ; macroporous polymers ; mesopores
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
R&D Projects	LH12194 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UCHP-M - RVO:67985858
UT WOS	000353339900002
EID SCOPUS	84928153089
DOI	10.1002/polb.23693
Annotation	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.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2016

Number of the records: 1