Preparation of poly (vinyl butyral) hollow fiber ultrafiltration membrane via wet-spinning method using PVP as additive

Electrospinning of Gelatin/Poly (Vinyl Pyrrolidone) Blends from Water/Acetic Acid Solutions

“…Some studies on gelatin electrospinning reported that nanofibers were obtained from solutions using solvents such as 1,1,1,3,3,3-hexafluoro-2-propanol (HFP), 2,2,2-trifluoroethanol (TFE) that can be used to dissolve natural polymers 6,24,25 . However, these solvents are highly toxic and residues of these solvents in which the fibers where electrospun may be released by degradation in the body and be detrimental to the host.…”

“…These materials are miscible due to the strong interactions between the synthetic and biological component, mainly due to hydrogen bonds. PVP can be used in the preparation of membranes and fibers in the electrospinning process in order to adjust the morphology, solution viscosity, size and size distribution of pores, increase the permeability of the membrane, and prevent the formation of defects 24,29 . This study investigated the electrospinning of gelatin / PVP blends from of acetic acid/water solutions.…”

Preparation and characterization of PDMS-PVDF hydrophobic microporous membrane for membrane distillation

“…According to literatures [22][23][24][25][26][27][28][29][30], the viscosity of casting solution is an important parameter for the forming of the membrane and it must be above a certain value otherwise the film cannot form during the demixing process. In addition, viscosity affects the kinetics of coagulation through affecting the interdiffusions between non-solvent and solvent.…”

“…The light transmittance experiment was performed by a self-made device which had been described in previous literatures [27,28]. A collimated laser was directed onto the glass plate which was immersed in a non-solvent coagulation bath such as water, ethanol or water-ethanol.…”

Influence of Polymer Type on the Physical Properties and Release Profile of Papaverine Hydrochloride From Hard Gelatin Capsules

“…Its molecular weight can range from 2500 to 1,000,000. It is mainly used in a wet granulation as a binder, since it significantly in-creases the hardness and strength of a solid dosage form [6,7]. Starches are commonly used in drug technology as binders, fillers and disintegrants.…”