Number of the records: 1  

Role of Water as a Coporogen in the Synthesis of Mesoporous Poly(divinylbenzenes)

  1. 1. 0437037 - UCHP-M 2015 RIV US eng J - Journal Article
    Hanková, Libuše - Holub, Ladislav - Meng, X. - Xiao, F.-S. - Jeřábek, Karel
    Role of Water as a Coporogen in the Synthesis of Mesoporous Poly(divinylbenzenes).
    Journal of Applied Polymer Science. Roč. 131, č. 23 (2014), s. 41198. ISSN 0021-8995
    R&D Projects: GA MŠk LH12194
    Institutional support: RVO:67985858
    Keywords : crosslinking * morphology * polystyrene
    Subject RIV: CI - Industrial Chemistry, Chemical Engineering
    Impact factor: 1.768, year: 2014

    The morphology of mesoporous poly(divinylbenzenes) prepared under so called hydrothermal conditions and with the monomers diluted in 10 times as much porogen solvent (tetrahydrofuran with 0–20% water) was studied in both dry and swollen states, with nitrogen adsorption/desorption and inverse steric exclusion chromatography, respectively. It was found that the pore volume in the polymer examined just after preparation corresponded to the volume of the porogen used. Such a high porosity can be explained only on the basis of pore formation through microsyneresis rather than the macrosyneresis mechanism that is common in the synthesis of conventional porous polymer materials. Naturally, drying induces a pore collapse and the addition of water to the porogen influences the ability of the polymer to regain the original pore volume by reswelling in tetrahydrofuran.
    Permanent Link: