Polysaccharides in fabrication of membranes: A review

Recent Advances in Separation and Analysis of Chiral Compounds

“…Membranes with enantioselective permeability are another common separation media. Compared with chromatographic separation techniques that are usually performed in an analytical scale, membrane separation has greater potential for large preparative scale separation (more than kilogram level) in pharmaceutical and chemical engineering fields. , Conventional chiral membranes are prepared from polysaccharides (chitosan and cellulose), sodium alginate, poly­(substituted acetylene), poly­(amino acids), and lipids. − Industrial application for most chiral membranes is still difficult because of insufficient enantioselectivity under high flux following the facilitated transport mechanism. Because the performance of membranes essentially depends on different interactions between enantiomers and chiral discriminating units of membranes during transport process, the exploration of new chiral materials with high selectivity, excellent permeability, good stability, and long-time operation has been the main focus in recent years, represented by improved polymers, porous crystalline materials, carbon nanomaterials, and micro/nanochannels. − These up-to-date membrane materials have continued to grow for chiral separation in the past two years.…”

Biopolymer coating for particle surface engineering and their biomedical applications

“…Polysaccharides are natural macromolecular compounds formed by the polymerization of more than 10 monosaccharides through glycosidic bonds, and are widely found in animals, plants and microorganisms [ [71] , [72] , [73] ]. Different polysaccharides have a variety of chemical structures and versatile functions that determine their applications [ [74] , [75] , [76] ]. Chitosan and cellulose, as the two most common types of polysaccharide polymers, have excellent biocompatibility, biodegradability, film-forming, non-toxic, renewable and other excellent characteristics, which make them good candidates to modify particle surface and apply in biomedicine [ 37 , 38 , [42] , [43] , [44] , [45] ].…”

Polysaccharides for Medical Technology: Properties and Applications

“…They can be classified based on their pore size into conventional filtration (from 100–10 µm), microfiltration (from 10 to 0.1 µm), ultrafiltration (from 0.1 µm to ≈50 Å), nanofiltration, and reverse osmosis (pore size down to ≈1 Å). [ 105 ] Apart from separation by size, using membranes with electrical charges enables better control of membrane selectivity between the membrane and the charged components due to electrostatic interactions. Adjusting voltage, pressure and concentration gradient can be done to control the mobility of molecules, ions and particles.…”