Nonionic mixed

Ethylhydroxyethylcellulose (EHEC) is a nonionic mixed ether available in a wide variety of substitutions with corresponding variations in aqueous and organic liquid solubilities. It is compatible with many oils, resins, and plasticizers along with other polymers such as nitrocellulose. EHEC is synthesized through a two-step process beginning with the formation of the HEC-like product through reaction between the basic cellulose and ethylene oxide. The second step involves further reaction with ethyl chloride. 

And rez JM, Bracho CL, Sereno S, Salager JL (1993) Effect of surfactant concentration on the properties of anionic-nonionic mixed surfactant-oU-brine systems. Colloid Surface A 76 249-256... 

Cationic/nonionic mixed micelles do not seem to show this compaction effect (at least as readily) as... 

Shiloach, A., and D. Blankschtein. 1998b. Measurement and prediction of ionic/nonionic mixed micelle formation and growthLangmuir14 7166-7182. 

A recent study on electrokinetic removal of ethyl benzene from contaminated clay showed a promising use of anionic-nonionic mixed surfactants. Surfactant addition resulted in 1.6-2.4-fold more removal than afforded by EK alone, and a mixed surfactant system, including 0.5% SDS and 2.0% PANNOX 110 (nonyl phenol polyethylene glycol ether) permitted optimal ethyl benzene removal (98%). This indicated that, in the presence of mixed surfactant micelles, the zeta potential of the soil particles significantly increased compared with that seen when anionic surfactant micelles were formed, and electrolytic mobility was thus enhanced (Yuan and Weng, 2004). The use of anionic-nonionic mixed surfactants in EK will also improve the desorption and migration of PAHs. 

Zhou W, Zhu L (2008). Enhanced soil flushing of phenanthrene by anionic-nonionic mixed surfactant. Water Research 42(1-2) 101-108. 

Shiloah, A. Blankschtein, D. Measurements and predictions of ionic/nonionic mixed micelle formation and growth. J. Langmuir 1998. 14, 7166—7182, and references therein. 

Bucci, S., Fagotti, C., Degiorgio, V., and Piazza, R. (1991). Small-angle neutron-scattering study of ionic-nonionic mixed micelles. Langmuir 7, 824-826. 

Mitra, R.K. and Paul, B.K. 2005 Effect of NaCl and temperature on the water solubilization behavior of AOT/nonionics mixed reverse micellar systems stabilized in IPM oil. Colloids Surf., A 255 165-180. 

Yoshida K, Dubin PL. Complex formation between polyacrylic acid and cationic/nonionic mixed micelles effect of pH on electrostatic interaction and hydrogen bonding. Colloid Surf A 1999 147 161-167. 

Dubin et al. studied the formation of polyelectrolyte-micelle complexes between poly(dimethyldiallylammonium chloride) and anionic/nonionic mixed micelles by static and dynamic light scattering [21-23]. Dynamic light scattering yields the hydrodynamic radius of the particles investigated (very useful information), especially in combination with SLS, allowing an assessment of the particle architecture. 

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