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The use of block copolymer stabilizers for controlling dispersion stability
Author(s) -
COSGROVE T.
Publication year - 1997
Publication title -
international journal of cosmetic science
Language(s) - French
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/j.1467-2494.1997.tb00179.x
Subject(s) - copolymer , coalescence (physics) , neutron scattering , flocculation , polymer chemistry , small angle neutron scattering , colloid , materials science , chemistry , scattering , physics , polymer , thermodynamics , optics , organic chemistry , composite material , astrobiology
The role of block copolymers in stabilizing colloidal dispersions against flocculation or coalescence is discussed in terms of the detailed structure of the interface. Both particulate dispersions and liquid/liquid interfaces are used as examples. Two novel experimental methods are introduced, small‐angle neutron scattering and neutron reflection. Comparison with the Scheutjens Fleer theory for block copolymers is also presented. Strategies for the optimum design of the stabilizing polymer are introduced. Le role de copolymeres blocs dans la stabilisation de dispersions colloidales contre la flocculation ou la coalescence est commente en fonction de la structure precise de l'interface. On utilise comme exemples a la fois des dispersions particulaires et des interfaces liquide/liquide. Deux nouvelles methodes experimentales sont introduites, la diffusion de neutrons a angle faible et la reflexion de neutrons. On presente aussi une comparaison avec la theorie des copolymeres blocs de Scheutjens Fleer. On introduit des orientations strategiques pour la conception optimale du polymere stabilisateur.