Characterization of Chitosan-poly (Ethylene Oxide) Blends as Haemodialysis Membrane

Abstract

Blend membranes of chitosan and poly (ethylene oxide) with different molecular weights of 100,000 and 600,000 were prepared by the solution cast technique. The Chitosan-PEO blend membranes were produced to study their water adsorptions capacity and characteristics of the haemodialysis membrane application. An increase in the water adsorption capacity of chitosan-PEO blend membranes compared to the pure chitosan was due to the porous structure as evident from the scanning electron micrograph. Addition of PEO with higher molecular weight had reduced the percentage of water adsorption of the chitosan-PEO blend membranes. XRD results revealed that chitosan-PEO blend membrane with higher water adsorption ability shows lesser degree of amorphosity. Intermolecular interactions between chitosan and higher molecular PEO chains in the blend contributed to important alteration in chitosan structure as observed in the infrared spectroscopy which lessens the permeability of the membrane.

Hybrid Composite Membrane of Phosphorylated Chitosan/Poly (Vinyl Alcohol)/Silica as a Proton Exchange Membrane

“…Several synthetic polymers, such as poly(vinyl alcohol) (PVA), poly(vinylidene fluoride) (PVDF), polyethersulfone (PES), polysulfone (PS), poly(ethylene oxide), polycaprolactone, and polyacrylamide, have been blended with chitosan to form composite membranes in previous studies. Blended membranes that undergo a cross-linking process demonstrate further improvements to their mechanical properties and water retention capacity [ 28 ]. The most common candidate that has been widely used to combine with chitosan membranes is PVA due to its unique properties, including its high crystallinity, water solubility, good film-forming ability, and high hydrophilicity due to containing reactive functional groups of -OH and forming hydrogen bonds that allowed chemical modification [ 29 , 30 , 31 ].…”

Effect of pH on the Synthesis and Properties of Luminescent SiO2/Calcium Phosphate:Eu3+ Core–Shell Nanoparticles

“…All spectra exhibit absorption bands due to vibrations of Si–O–Si (ν as , 1100 cm –1 ; ν s , 800 cm –1 ; δ, 465 cm –1 ) and Si–OH (ν s , 950 cm –1 ) absorption with ν as = asymmetric stretching, ν s = symmetric stretching, and δ = bending . The absorption bands at 3430 and 1640 cm –1 are ascribed to the stretching and bending modes of physically adsorbed water.…”

Exploring the Formulation and Approaches of Injectable Hydrogels Utilizing Hyaluronic Acid in Biomedical Uses

“…Solution blending is the most applicable method, which is simple and suitable for preparing several applicable forms [111]. Solution blending can be done by dissolving each polymer in a suitable solvent and mixing the two polymeric solutions; in addition, the crosslinker can be added to improve the mechanical strength [112,113]. Te properties of polymeric blends are determined by potential interactions between two polymers [114].…”