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Interfacial agents for polymer/liquid crystal dispersions
Author(s) -
Gohy JeanFrançois,
Jérôme Robert
Publication year - 1996
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1996.021970712
Subject(s) - polystyrene , polymer , polymer chemistry , covalent bond , liquid crystal , chemistry , polystyrene sulfonate , carboxylate , ionic bonding , ammonium , sulfonate , chemical engineering , materials science , ion , organic chemistry , sodium , pedot:pss , optoelectronics , engineering
Liquid crystals (LC) were covalently and ionically bonded to one (or both) end(s) of polystyrene chains. These compounds were tested as interfacial agents in polystyrene/liquid crystal dispersions. In case of covalent bonding, the additive is too much “soluble” in polystyrene and no interfacial activity is observed. Ionic bonding of the LC to polystyrene chains deeply changes the situation, all the other conditions being the same. The dipolar interactions of the ion pairs are clearly favorable to the localization of the additive at the polymer/LC interface. The higher polarity of the ammonium sulfonate pairs compared to the parent ammonium carboxylate ion pairs accordingly accounts for a higher interfacial activity.