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  • The study deals with the preparation and characterisation of heterogeneous membranes based on hypercrosslinked polymeric adsorbent microparticles or carbonized molecular sieves (CMS) with the polyimide binder. Hypercrosslinked polystyrene microparticles of diameter 1-5.mu.m were prepared by Friedel-Crafts reaction. CMS were prepared by microwave heating of ion exchangers or acrylonitrile copolymers. Two polyimides with different chemical structure were used for preparation heterogeneous membranes. All the prepared membranes exhibited a high thermal stability and high strength modulus. The permeability values of heterogeneous membranes for gases were of the order of magnitude 10-15 - 10-18; for homogeneous polyimide membranes the values were by three orders of magnitude lower.
  • The study deals with the preparation and characterisation of heterogeneous membranes based on hypercrosslinked polymeric adsorbent microparticles or carbonized molecular sieves (CMS) with the polyimide binder. Hypercrosslinked polystyrene microparticles of diameter 1-5.mu.m were prepared by Friedel-Crafts reaction. CMS were prepared by microwave heating of ion exchangers or acrylonitrile copolymers. Two polyimides with different chemical structure were used for preparation heterogeneous membranes. All the prepared membranes exhibited a high thermal stability and high strength modulus. The permeability values of heterogeneous membranes for gases were of the order of magnitude 10-15 - 10-18; for homogeneous polyimide membranes the values were by three orders of magnitude lower. (en)
  • Studie se zabývá přípravou a charakterizací heterogenních membrán na bázi mikročástečkových hyperzesítěných polymerních adsorbentů neb molekulových sít a polyimidového pojiva. Hyperzesítěné polystyrenové mikročástice o průměru 1 - 5 .mu.m byly připraveny Friedel-Craftsovou reakcí. Karbonizovaná molekulová síta byla připravena mikrovlnným ohřevem iontoměničů neb akrylonitrilových kopolymerů. Pro přípravu membrán byly použity dva typy polyimidů rozdílné chemické struktury. Všechny připravené membrány mají vysokou teplotní stabilitu a dobré mechanické vlastnosti. Hodnoty permeabilit heterogenních membrán pro plyny byly řádu 10-15 - 10-18. Homogenní membrány měly permeability o tři řády nižší. (cs)
Title
  • Heterogeneous membranes based on polyimide
  • Heterogeneous membranes based on polyimide (en)
  • Heterogenní membrány založené na polyimidu (cs)
skos:prefLabel
  • Heterogeneous membranes based on polyimide
  • Heterogeneous membranes based on polyimide (en)
  • Heterogenní membrány založené na polyimidu (cs)
skos:notation
  • RIV/61389013:_____/05:00001075!RIV06-GA0-61389013
http://linked.open.../vavai/riv/strany
  • 64;66
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA104/03/0680)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 523219
http://linked.open...ai/riv/idVysledku
  • RIV/61389013:_____/05:00001075
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • membrane; heterogeneous; composite (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [5968EA2E5094]
http://linked.open...v/mistoKonaniAkce
  • Valencia
http://linked.open...i/riv/mistoVydani
  • Valencia
http://linked.open...i/riv/nazevZdroje
  • Proceedings
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Brožová, Libuše
  • Kotek, Jiří
  • Kovářová, Jana
  • Hradil, Jiří
  • Sysel, P.
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • Polytechnic University
https://schema.org/isbn
  • 84-689-2727-9
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