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Träfflista för sökning "WFRF:(Schoonbrood HAS) "

Sökning: WFRF:(Schoonbrood HAS)

  • Resultat 1-2 av 2
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1.
  • Lam, S, et al. (författare)
  • Surfactants in heterophase polymerization: A study of film formation using atomic force microscopy
  • 1997
  • Ingår i: Journal of Applied Polymer Science. - 0021-8995 .- 1097-4628. ; 66, s. 187-198
  • Tidskriftsartikel (refereegranskat)abstract
    • Film formation of three different latices was studied using atomic force microscopy. The latices were made from a mixture of butyl acrylate, styrene and acrylic acid using either a polymerizable or an unreactive aionic surfactant as emulsifier. Sodium 11-crotonoyloxyundecan- 1-ylsulfate and sodium-3-(sulfopropyl)tetradecylmaleate were used as reactive surfactant and the unreactive surfactant was sodium dodecylsulfate (SDS). The conventional surfactant was found to migrate to the surface of the latex film to a much greater extent than the reactive surfactants; however, also the latter were incompletely anchored to the particle. The maleate surfactant was bound to a higher degree than the crotonate, a finding which is in line with the relative reactivities of the two surfactants.
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2.
  • Unzué, MJ, et al. (författare)
  • Reactive surfactants in heterophase polymerization. VI. Synthesis and screening of polymerizable surfactants (surfmers) with varying reactivity in high solids styrene-butyl acrylate-acrylic acid emulsion polymerization
  • 1997
  • Ingår i: Journal of Applied Polymer Science. - 0021-8995 .- 1097-4628. ; 66, s. 1803-1820
  • Tidskriftsartikel (refereegranskat)abstract
    • Several polymerizable surfactants (surfmers) have been used in the semi-continuous emulsion polymerization of styrene, butyl acrylate and acrylic acid. Three of the (anionic) surfmers (sodium 11-crotonyl undecan-1-yl-sulfate, sodium 11-methacryloyl undecan-1-sulfate and sodium sulfopropyl tetradecyl maleate) were in house with purities between 53 and 82%. Physico-chemical properties such as the critical micelle concentration, the adsorption isotherm, and the specific adsorption area were determined. The surfmers were then used with constant addition profiles in semi-continuous reactions, and the instantaneous conversions of the main monomers determined. The particle size, amount of coagulum, surface tension and stability against electrolyte solutions of the latices were evaluated. Film were cast of some of the latices, and the visual appearance and water adsorption were assessed.
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  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
Typ av innehåll
refereegranskat (2)
Författare/redaktör
Sjöberg, M (2)
Holmberg, K (2)
Schoonbrood, HAS (2)
Unzué, MJ (2)
Lam, S. (1)
Hellgren, A-C (1)
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Asua, JM (1)
Goñi, AM (1)
Sherrington, DC (1)
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RISE (2)
Språk
Engelska (2)
År
1997 (2)

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