Nanoparticle suspension and forming are important areas. In this paper, the stability and rheology of A1203 nanoparticle suspensions at different dispersant concentration, suspension pH, and solids loading were studied. The most desirable suspension conditions were 7.5-9.5 for pH and 2.00-2.25 wt% of A1203 for poly(acry1ic acid) (PAA) dispersant. 45.0 vol% A1203 solids loading can be achieved w...

To understand the role of phosphate ester dispersant, we investigated rheology a BaTiO slurry. For model case, coarse-grain molecular dynamics (CGMD) simulation was performed with butyral polymer didodecyl hydrogen (DHP) in toluene/ethanol solvent. By systematically analyzing effect DHP from an atomic-scale first principle and all-atom MD to microscale CGMD simulation, how adsorption dispersant...

In a liquid-liquid interface bioreactor, fungal cells locate in a hydrophilic polyacrylonitrile microsphere layer on an aqueous-organic interface. In this article, effects of hydrophobicity of the interface on n-decane hydroxylation activity of Monilliera sp. NAP 00702 was examined. (-)-4-Decanol production was significantly enhanced to 132% by addition of polytetrafluoroethylene.

Thin fibers were spun from a colloidal solution of single-walled carbon nanotubes (SWNTs) using an electrophoretic method. Sodium dodecylbenzenesulfonate (NaDDBS) was chosen as a surfactant and showed good performance owing to its special chemical structure. The highest spinning velocity reached 0.5 mm s-1. The resulting SWNT fibers had a tensile strength of 400 MPa and a conductivity of 355 S ...

Low hydrocarbon concentrations stimulated the growth of Tetraselmis suecica, whereas higher concentrations (200 ppm) inhibited growth. The content of chlorophyll a in this microalga was affected in a similar way. Crude oil had the most marked effects. Dispersant SEAKLIN-101-NT and mixtures of oil and SEAKLIN-101-NT did not show selective toxicity for the microalga, although inhibitory effects c...

Abstract The application of chemical dispersants aims to stimulate microbial oil degradation by increasing the bioavailability compounds. Overall, nine microcosms were prepared (three for each treatment) using treated sediment with (i) dispersant ( d : 25 ppm), (ii) (500 and (iii) + (500: respectively. There are also three control containing only water without petroleum. Then, we analyzed bacte...

To investigate the synergistic effect of oleic acid modification and dispersant on dispersion stability wear resistance graphene in base oil. Modified was prepared by using as surface modifier T161 dispersant. The microstructure characterized SEM Raman. effects were investigated, optimal addition amount determined. At same time, optimum modified determined MMU–10 testing machine. And feasibilit...

the accurate prediction of protein stability is one of the most challenging goals in protein formulation and delivery. in this study, a gradient rp-hplc method is described for the separation of human growth hormone (hgh) variants as deamidated and oxidized forms. the methodology employed a polymeric poly (styrene-co-divinylbenzene) column and a 1ml/min flow rate of a linear gradient of 0.1% v/...

With the continuous research and development of the low-toxic and high-efficiency oil spill dispersants (OSDs), there are an increasing number of evaluation methods for the effect of the OSDs. Currently, the majority of the OSDs effect evaluation is related with the testing of the emulsification in the laboratory, while the stability researches on the OSDs effect are still few. In this paper, t...