Two-Step Syneretic Formation of Highly Porous Morphology During Copolymerization of Hydroxyethyl Methacrylate and Ethylene Glycol Dimethylacrylate.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F16%3A00472515" target="_blank" >RIV/67985858:_____/16:00472515 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.mtcomm.2016.02.004" target="_blank" >http://dx.doi.org/10.1016/j.mtcomm.2016.02.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mtcomm.2016.02.004" target="_blank" >10.1016/j.mtcomm.2016.02.004</a>

Result language

angličtina

Original language name

Two-Step Syneretic Formation of Highly Porous Morphology During Copolymerization of Hydroxyethyl Methacrylate and Ethylene Glycol Dimethylacrylate.

Original language description

Large pore volume and pore size ranges were achieved in 2-hydroxyethyl methacrylate (HEMA)/ethylene glycol dimethylacrylate (EGDMA) copolymers prepared by microsyneretic phase separation in free-radical copolymerization of comonomers in the presence of a tenfold volume of porogenic solvents. A mixture of methanol, i.e. good swelling solvent for poly(HEMA), and tetrahydrofuran, i.e. good swelling solvent for poly(EGDMA), was used as porogens. The morphology of the as-prepared copolymers was assessed in their native, expanded state using inverse steric exclusion chromatography (ISEC), which enabled to get a much better insight into the mechanism of pore formation than a conventional approach based on the evaluation of the morphology of dried materials. Two porosity levels with distinct pore volumes and sizes could be distinguished depending on the crosslinking degree and the MeOHITHE ratio. Their formation could be explained by a two-step syneretic phase separation during the free-radical copolymerization, namely x-induced syneresis for the larger pore sizes and v-induced syneresis for the smaller pore sizes Due to their high crosslink density, the porosity of the resulting polymers do not rely on swelling, and it was virtually independent on the nature of surrounding solvent.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CC - Organic chemistry

OECD FORD branch

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Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials Today Communications

ISSN

2352-4928

e-ISSN

—

Volume of the periodical

7

Issue of the periodical within the volume

JUN

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

6

Pages from-to

16-21

UT code for WoS article

000379932400003

EID of the result in the Scopus database

2-s2.0-84960435311