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  • Klasická teorie větvení W.H. Stockmayera v modifikaci Thurmond a Zimma a následně Kilba byla použita pro popis vývoje distribuce polymerizačních stupňů vinylových polymerů s přídavkem divinylových monomerů během konverze až k bodu gelace. Byly vypočítány hmotnostní zlomky molekul s určitým počtem větvicích bodů v molekule jako funkce komplexní proměnné-větvicího parametru-gamma, zahrnujícího složení polymerizační směsi, relativní reaktivity jednotlivých typů dvojných vazeb a stupeň konverze. Z výpočtů vyplývá několik obecných závěrů, o nichž se předpokládá, že budou platné i pro systém, který ne zcela rigorózně odpovídá zvolenému modelovému systému. (cs)
  • Stockmayer's classical theory of the statistical branching of polymers as modified by Thurmond and Zimm, and subsequently by Kilb, has been used to describe the evolution of the distribution of degrees of polymerization with conversion up to the gel point in a copolymerization of a vinyl monomer with a small amount of a divinyl monomer. The mass fractions of molecules with a particular number of branch points per molecule, the averages of the degree of polymerization of those molecules, and some other characteristics were calculated as functions of a complex variable-the branching parameter, gamma, including the composition of the monomer mixture, relative reactivities of the individual types of double bonds, and conversion. From the calculations, a few general conclusions on the behaviour of the model system can be drawn. The conclusions are likely to be qualitatively valid also for systems not strictly conforming to the model.
  • Stockmayer's classical theory of the statistical branching of polymers as modified by Thurmond and Zimm, and subsequently by Kilb, has been used to describe the evolution of the distribution of degrees of polymerization with conversion up to the gel point in a copolymerization of a vinyl monomer with a small amount of a divinyl monomer. The mass fractions of molecules with a particular number of branch points per molecule, the averages of the degree of polymerization of those molecules, and some other characteristics were calculated as functions of a complex variable-the branching parameter, gamma, including the composition of the monomer mixture, relative reactivities of the individual types of double bonds, and conversion. From the calculations, a few general conclusions on the behaviour of the model system can be drawn. The conclusions are likely to be qualitatively valid also for systems not strictly conforming to the model. (en)
Title
  • Distribution of degrees of polymerization in statistically branched polymers with tetrafunctional branch points: model calculations
  • Distribution of degrees of polymerization in statistically branched polymers with tetrafunctional branch points: model calculations (en)
  • Distribuce polymerizačních stupňů ve statisticky větvených polymerech s čtyřfunkčními větvícími body (cs)
skos:prefLabel
  • Distribution of degrees of polymerization in statistically branched polymers with tetrafunctional branch points: model calculations
  • Distribution of degrees of polymerization in statistically branched polymers with tetrafunctional branch points: model calculations (en)
  • Distribuce polymerizačních stupňů ve statisticky větvených polymerech s čtyřfunkčními větvícími body (cs)
skos:notation
  • RIV/61389013:_____/06:00028063!RIV06-AV0-61389013
http://linked.open.../vavai/riv/strany
  • 196;203
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA203/03/0617), P(IAA100500501), P(IAA4050403), P(IAA4050409), Z(AV0Z40500505)
http://linked.open...iv/cisloPeriodika
  • 2
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
  • 472001
http://linked.open...ai/riv/idVysledku
  • RIV/61389013:_____/06:00028063
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • statistical branching; tetrafunctional branch points; molecular-weight distribution (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [C622C4A32993]
http://linked.open...i/riv/nazevZdroje
  • Polymer International
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...v/svazekPeriodika
  • 55
http://linked.open...iv/tvurceVysledku
  • Netopilík, Miloš
  • Kratochvíl, Pavel
http://linked.open...n/vavai/riv/zamer
issn
  • 0959-8103
number of pages
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