POLYMER-SURFACTANT INTERACTION 31 (A) DQNNED MQNNED g0000 Polyquat 10 1.0 0.8 0.6 0.4 0.2 0.1 01.0 % SDS t I I I I I 0.0 0.2 0.4 0.6 0.8 0.9 1.0 % Octoxynol Surfactant concentration ( 1% total ) (e) DQNNED MQNNED Polyquat 10 0.20 0.18 0.16 0.14 0.12 0.10 %SDS 0.80 0.82 0.84 0.86 0.88 0.90 % Octoxynol Surfactant concentration ( 1% total ) Figure 6. Phase diagrams for the systems 1% polymer/sodium dodecyl sulfate/Octox•vnol, varying the ratio of the two surfactants. Symbols indicate: • clear precipitate and clear supernatant ..• white precipitate and clear supernatant [] hazy solution [] clear one-phase solution. (A) Concentration of sodium dodecyl sulfate 0.0% to 1.0%. (B) Concentration of sodium dodecyl sulfate 0.10% to 0.20% to accurately determine Yo

32 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS 360 366 372 378 384 390 396 402 408 414 420 426 432 438 •.•.• 450 /III Pyrene 1 * 10 -7 M in Hexane ß : = .7:1 _ • [ [ • ' [ I I I I I I I I 360 366 372 378 384 390 396 402 408 414 420 426 432 438 •.•.• 450 emission (nm) Figure 7. Fluorescence intensity ooe pyrene in water and hexane. Table I Fluorescence Intensity of Pyrene Polymers Ratio Ix/I 3 1% Polyquaternium 10 1.7 1% MQNNED 1.7 1% DQNNED 1.7 Surfactants 1% Octoxynol 1.2 0.10% SDS, 0.90% Octoxynol 1.2 Polymer-Suroeactant Complexes 1% Polyquaternium 10 + 1% Octoxynol 1% MQNNED + 1% Octoxynol 1% DQNNED + 1% Octoxynol 1% Polyquaternium 10 + 0.10% SDS, 0.90% Octoxynol 1% MQNNED + 0.10% SDS, 0.90% Octoxynol 1% DQNNED + 0.10% SDS, 0.90% Octoxynol 1.3 1.3 1.3 1.3 1.3 1.3 0.7:1, the pyrene is solubilized in the hydrocarbon chain region of the micelies. There- fore, if micelies are present in the polymer-surfactant complexes, the I•/I 3 ratio should be approximately 1.2:1. The similarity in fluorescence intensity indicates that micelie composition has no effect on the I•/I 3. This type of change in the pyrene emission