In this paper,the synthetic technology and properties of polyoxyethylene oleate were studied,the optimum technical condition were found,the relation between the degree of polymerization of EO and surface properties were also discussed.
Surface properties of the polyoxyethylene aliphatate were measured. The relationship between structure and properties of polyoxyethylene aliphatate was discussed.
he preparation, surface properties, the chemical state of the active component of the ultrafine Pd/Al 2O 3 catalyst by supercritical fluid drying(SFD) and its catalytic properties in selective hydrogenation reaction of acetylene were studied. Experimental results show that the ultrafine support Al 2O 3 has quite different short fiber structure from that of conventional support.
Experiments indicated that the surface-active properties of the additive compounds would be the best when the molecular number of epihydrin was 8-10 and that of the ethylene oxide was 20-25.
Cobalt oxide/dodecyl sulfate mesoporous material was synthesized by hydrothermal method with SDS as template and ethylenediamine as alkali medium. The mesoporous material was characterized by powder X- ray diffraction (XRD), Fourier transform-infra red spectroscopy (FT-IR), thermogravimetric analyses (TG/DTA), N_2-adsorption-desorption, nitrogen adsorption measurements (BET) and transmission electron microscopy (TEM).
The properties of products were detected. The results show that APG-SA has good surface activity,especially in emulsification compare to APG-SS and APG.
The technique of BET was used to measure the surface of catalyst,and the surface property of the catalyst was studied by means of adsorption-desorption.
The results showed that the surface properties of copper almost remained unchanged after weeks of operation, which spelled its strong chemical stability and resistance to poisoning.
Changes in the surface properties of montmorillonite and its porous structure after the replacement of exchangeable inorganic cations by tetramethylammonium cations were investigated.
The model's episodic performance and its response to small changes in land-cover and surface physical properties in the area, e.g., scenarios of urban heat island mitigation, are evaluated.
Surface physical properties and chemical states on a nanometer scale were investigated to provide a direct insight into the mechanism of near-frictionless performance displayed by diamond-like carbon (DLC) coatings in engine oil lubricants.