Apparent Dipole Moments of 1-Alkanols in Cyclohexane and n-Heptane, and Excess Molar Volumes of (1-Alkanol + Cyclohexane or n-Heptane) at 298.15 K

Apparent dipole moments and excess volumes of Oligo (oxyethylene glycol) monodecyl ethers inn-alkanes atT = 298.15 K

“…The ability of C 10 E m to attract both decane and dodecane becomes less effective with increasing m. Those observations agree well with the results mentioned in the previous work [20,21]. The condensation of a long-chain alkane onto long-chain alkanol was scarce, whereas a short-chain hydrocarbon performs a condensation onto longer alkanol.…”

“…The amphiphiles undergo no molecular interactions in this region. Such behaviours commonly occurred for 1-alkanols solved in non-polar solvents [15,20,21]. The values of for C 10 E 1 decreased with increasing x, while the value of for C 10 E m , m ¼ 2-8 increased monotonously with increasing x in a region of 0 5 x 5 0.005.…”

“…Thereby, the values of for C 10 E 1 decreased with increasing x, due to threshold of intermolecular Notes: a Ref. [20]; and b Ref. [21].…”

Studies on the hydration of Aerosol OT and the formation of reversed micelles in decane by a calorimetry and ab initio calculations

“…The densities, q, were measured by using a vibratingtube densimeter (Anton Paar, DMA-602) at T = 298.15 K. The temperature in the jacket of densimeter was controlled with the water circulated from a thermostat (CT-L, Sodev, Canada) with a stability of ±0.0003 K. The calibration and the operation of the densimeter have been reported in the previous publication [26]. The temperature for the measurements of q was monitored with a thermometer (Precision Thermometry Bridge of Ninco Products, Inc., F300 MKII, England).…”

Estudio experimental y teórico de mezclas líquidas binarias formadas por 1-alcoholes y ciclohexilamina

“…La misma conclusión se puede extraer de la correspondiente comparación con mezclas de N,Ndimetilformamida y N,N-dimetilacetamida, indican que las disoluciones con aminas están más estructuradas (figura 4.26). La comparación de las curvas de los sistemas 1-heptanol + ciclohexilamina, o + ciclohexano (figura 4.27) revela que la amina rompe mejor la autoasociación del alcohol ya que, en el sistema con el alcano aparece un mínimo en la zona de baja concentración del alcohol [96,122,123,124,125], síntoma inequívoco de la existencia de especies cíclicas, principalmente tetrámeros de momento dipolar nulo [124], que el alcano es incapaz de romper.…”