R. Krishnan et R. Sprycha, Interactions of acetylenic diol surfactants with polymers Part 1. Maleic anhydride co-polymers, COLL SURF A, 149(1-3), 1999, pp. 355-366
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Interactions of acetylenic diol surfactants (Surfynol 104 and Surfynol 440)
with maleic anhydride co-polymers (SMA 1000H; SMA 3000H and SMA 1440H) hav
e been studied by dynamic surface tension method. Surfynol 104 (HLB value a
bout 3)contained no ethylene oxide in its molecule while Surfynol 440 (HLB
value about 8) contained 3.5 mol (40% by weight) of ethylene oxide. SMA 100
0H and SMA 3000H were unmodified co-polymers of styrene and maleic anhydrid
e with styrene/maleic anhydride ratios of 1/1 and 3/1, respectively, while
SMA 1440H was a half ester (butoxyethanol) of SMA 1000H polymer. Polymer so
lutions of four different concentrations were used (0.3, 1, 3 and 10% w/w).
It was found that acetylenic diol surfactants interacted with maleic anhyd
ride co-polymers forming simple complexes and complex structures in the bul
k that dramatically increased solution viscosity for high polymer concentra
tions and surfactant doses. The extent of interactions increased with incre
asing polymer hydrophobicity and the amount of ethylene oxide in the surfac
tant molecular structure. Both hydrophobic and hydrogen bonds seem to be in
volved in the polymer/surfactant interactions. For low surfactant concentra
tions polymer/surfactant interactions can be described as simple surfactant
adsorption on the "adsorption sites" of the polymer chain. (C) 1999 Elsevi
er Science B.V. All rights reserved.