solvent dispersion
1.A binary solvent dispersion(BSD) method has been investigated in preparation of nanoparticles of polylactide(PLA) and poly( DL lactide co glycolide)(PLGA) as functions of polymer molecular weight and monomer ratio in copolymer:L/G ratio= m (PLA)/ m (PLGA).
2.When preparing 8-isobutyl-POSS/silicone rubber composites by the solution mixing, some factors such as the ratio of POSS and silicone rubber, the drying temperature, the content of solvent could influence the dispersion of 8-isobutyl-POSS in silicone rubber matrix. The results show that lower content of POSS, quicker speed of solvent volatilization and higher drying temperature is easier to prepare finer POSS/silicone rubber composites that POSS well dispersed on silicone rubber matrix.
3.This report showed the effect of rich arene active solvent on the light fraction yeild in the atmospheric and tu distillatiohn for Daqing crude oil with the petroleum dispersion theory. It was found tha the adding of rich are active solvent in the distillation for Daqing crud oil made the yeild of <350℃ light fraction increase 0.5- 1.5%. The measurement of the active solvent adding amount was determined
4.A cationic soap-free water-soluble polyacrylate colloidal dispersion was prepared through acidifying the copolymer solution which was produced by solution polymerization of acrylic monomers under different feeding manners and using iso-propanol as solvent, AIBN as initiator, dimethylaminoethyl methacrylate (DM) as functional comonomers.
5.SAS process includes different processes. In this paper, precipitation by acompressed antisolvent (PCA) process and solution enhanced dispersion bysupercritical fluids (SEDS) are studied. In four models with different nozzle structure,the influences of solvent flux, density of carbon dioxide, size of nozzle and thelength-to-diameter ratio on the hydrodynamics properties of SAS process are studiedby means of the turbulent intensity and volume faction distribution of solvent.
