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Nanoporous Polycyanurates Created by Chemically‐Induced Phase Separation: Structure‐Property Relationships
Author(s) -
Grigoryeva Olga,
Fainleib Alexander,
Gusakova Kristina,
Starostenko Olga,
Saiter JeanMarc,
Levchenko Volodymyr,
Serghei Anatoli,
Boiteux Gisèle,
Grande Daniel
Publication year - 2014
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201300174
Subject(s) - nanoporous , materials science , chemical engineering , dielectric , porosity , membrane , annealing (glass) , inert , polymer chemistry , composite material , organic chemistry , nanotechnology , chemistry , engineering , biochemistry , optoelectronics
Summary Nanoporous thermostable polycyanurate (PCN) films were generated by in‐situ metal complex‐catalyzed polycyclotrimerization of 4,4′‐ethylidenediphenyl dicyanate in the presence of 20–50 wt.% of inert high‐boiling temperature liquids as porogens, i.e . dioctyl, dibutyl or dimethyl phthalates (DOP, DBP or DMP), followed by their extraction from the densely crosslinked PCN frameworks, drying, and additional annealing at various temperatures. The nanoporous structure for all PCN‐based films developed was investigated by SEM, BET, and DSC‐based thermoporometry. Furthermore, the thermal and dielectric properties of the nanoporous films were also examined. The method developed allows producing nanoporous films for membranes with controlled thermal and dielectric properties as well as porosity parameters.