Polyoxyethylene-6-nonylphenyl ether

Fig. 1.4.2 Transmission electron micrograph of Si02 particles produced at Wo = 5 in 0.10 mol kg-1 polyoxyethylene(6) nonylphenyl ether-cyclohexane system. [TEOS] 0.10 mol kg-1 [NH3]/[surfactant] = 0.5.

Fig. 1.4.6 Transmission electron micrographs of Ti02 precursors produced in 0.20 mol kg-1 mixture of Aerosol OT and polyoxyethylene(6) nonylphenyl ether-cyclohexane. Aerosol OT mole fraction 0.65 [Ti(0-i-C3H7)4l = 0.01 Wo = 2.5 [H2S04]/[surfactant] = 0.05.

Fig. 4.3.2 AgCI particles containing metal silver dots precipitated in 0.10 mol kg-1 mixtures of dioleyldimethylammonium chloride and polyoxyethylene(6) nonylphenyl ether-cyclohexane system. Wo = 3 [dioleyldimethylammonium chlorideJ/fAgNOj] = 33.3.

AgCl nanoparticles have been synthesised by using a water/cyclohexane/polyoxyethylene (6) nonylphenyl ether (NP-6) microemulsion wherein AgN03 and KC1 solutions were added and mixed [66]. The particle growth rate and the final particle size at a given co were... 

However, an excellent antistatic performance is obtained by adding phosphonium sulfonates and phosphate ester that have ether moieties in the organic chain, e.g., a phosphate with polyoxyethylene nonylphenyl ether (30). 

Kamegawa and Yoshida (612] studied the pH dependence of the adsorption of several surface-active agents by chemically modified carbons. The uptake of nonionic polyoxyethylene nonylphenyl ether (PO) was not affected by pH, but it deereased with increasing outgassing temperature of the carbon. The uptakes of both the cationic octadecyltrimethylammonium chloride (OT) and the anionic sodium dodecylbenzenesulfonate (DB) exhibited a shallow minimum at intermediate pHs. The authors concluded that the van der Waals force was dominant in the adsorption of PO, while electrostatic attraction and repulsion, respectively, contributed to the behavior of OT and DB. 

Non-ionic surfactant polyoxyethylene nonylphenyl ether. Prepared in acidic medium 1-alkanols and NHj were present during the reaction. After calcination at 900 °C. After calcination at 900 °C. After calcination at 600 °C. After calcination at 1400 °C. 

Ci2EO ) or polyethylene glycol ether = 4 (tetraoxyethylene dodecyl ether, C12EO4) or tetra(ethylene glycol) dodecyl ether (TEGDE) or polyoxyethylene-(4)-lauryl ether (POELE) Polyoxyethylene-( )-nonylphenyl ether [NP-4, n = 4 (Triton N-42) NP-5, n = 5 (Triton N-57) NP-6, n = 6 (Triton N-60) NP-9, 77 = 9-10 (Triton N-101)]... 

Polyoxyethylene nonylphenyl ether Polyoxyethylene octylphenyl ether Polyoxyethylene dodecylphenyl ether Polyoxyethylene oleic acid Sorbitan laurate Sorbitan monostearate Dimethyl polysiloxane 2,4,7,9-Tetramethyl-5-decyne-4,7-diol 3,6-DimethyI-4-octyne-3,6-diol 3,5-Dimethyl-l-hexyne-3-ol... 

Taipei, 14th-16th Nov.1994, p.413-4 EFFECT OF PEO CHAIN LENGTH OF POLYOXYETHYLENE NONYLPHENYL ETHER SURFACTANT ON THE SYNTHESIS OF POLYMER LATEX Chu H-H Cheng H-C Taiwan,Feng Chia University (lUPAC Taiwan,Polymer Society)... 

HLB numbers are calculated for a surfactant from simple formulae based either on analytical or composition data. For polyoxyethylene nonylphenyl ethers (NPE), HLB = E/S where E = the weight % of polyoxyethylene in the surfactant. For example, for NPE 12 (12 oxyethylene groups in the hydrophilic chain), HLB = 14.2. For a polyhydric fatty acid ester, HLB = 20(1 - S/A), where S — saponification number of the ester and A — acid number of the fatty acid. For example, for polyoxyethylene(20) sodium monolaurate (trade name Tween 20), S = 45.5 and A = 276 hence HLB = 16.7. 

Figure 5.10 shows changes in zeta potential and turbidity of iron(III) oxide hydrate sols flocculated with NFIOO. The optimum flocculation concentration was about 3 X 10 mM NFIOO. The sols were redispersed by NF7 or NP7.5, a hydrocarbon-type nonionic surfactant (polyoxyethylene nonylphenyl ether with a polyoxyethylene chain of average 7.5 EO). The turbidity increased sharply. The zeta potential changed only a little, as expected for a nonionic surfactant. Sols flocculated by NFIOO were not redispersed by SDS. The inability of SDS, an anionic hydrocarbon surfactant, to redisperse the sols was attributed... 

HDZ = hydrazine Igepal CO-520 = polyoxyethylene(5)nonylphenyl ether ISO = isooctane LAc = linoleic acid MA = methylamine MST = mesitylene Ni°(cod)2 = bis (r]4-l,5-cyclooctadiene) Ni(0) NMPyr = N-methylpyrrole OA = oleylamine OAc = oleic acid Oc = octane OcA = octylamine ODA = octadecylamine PAA = poly (acrylic add) PD = 2-pyrrolidone Igepal CA-520 = polyoxyethylene(5)isooctylphenyl ether PVP = polyvinylpyrrolidone Pyr = pyrrole RAc = ricinoleic acid ... 

In this extraction, the concentrated surfactant-rich phase was a solid rather than a liquid. Abbreviations for surfactants Igepal CO-630 nonylphenoxypoly(ethylenoxy)ethanol PONPE-7.5 polyoxyethylene(7.5)nonylphenyl ether PONPE-10 polyoxyethylene(10)nonylphenyl ether TRITON X t-octylphenoxypolyoxyethylene ether. 

The synthesis of Si02 particles by ammonia-catalyzed hydrolysis of TEOS has been also carried out in Aerosol OT reversed micelle systems. The particles precipitated in this systems are spheres, but they have generally a broad size distribution comparing with that of nonionic reversed micelles compared to the normalized standard deviation of <10% in polyoxyethylene(5) nonylphenyl ether, that in Aero-... 

Unlike TEOS hydrolysis, Si02 particles have been also prepared by hydrolysis of Na2Si02 and Na4Si02 in nonionic reversed micelle systems. Spherical and poly-disperse particles of 31.8 nm mean diameter were produced in polyoxyethylene(9.5) octylphenyl ether-hexanol-cyclohexane systems (25), but more uniform and dense particles were precipitated by hydrochloric acid-catalyzed hydrolysis in a mixture of polyoxyethylene(5) nonylphenyl ether and polyoxyethylene(9) nonylphenyl ether in cyclohexane systems at pH 11 (26). The uniform particle formation at higher pH is attributed to the charge repulsion by OH- adsorbed on particle surface. The particles of specific surface area of 347 m2 g-1 can be obtained by calcination of particles produced at pH 2. 

Otsuki and Shiraishi [3] used reversed phase absorption liquid chromatography and field desorption mass spectrometry to determine polyoxyethylene alkylphenyl ether non ionic surfactants in water. In the separation of polyoxyethylene octylphenyl, nonylphenyl and dodecylphenyl ethers by gradient elution with a holding process by holding the... 

Calibration graphs of polyoxyethylene, octylphenyl and nonylphenyl ethers with a scale range of 0.05 absorbance units were linear between 0 and 20pg. 

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