Electrospun polyacrylonitrile nanocomposite fibers reinforced with Fe3O4 nanoparticles: Fabrication and property analysis

Rheology and Thermal Studies of Stearoyl Chitosan Varying the Degree of Substitution

“…There are two types of rheological behavioral patterns: viscous behavior and elastic behavior. The rheological behavior of polymer solutions can be explained using equation (1.1), which is the power law equation [8][9][10][11].…”

“…Therefore, polymers exhibit shear thinning at higher shear rates. When the shear rate increases, disruptions occur faster than the chains can reentangle and the resultant decreasing entanglement allows molecules to flow with less resistance, which leads to decrease in viscosity [8][9][10][11]. This paper describes the preparation of two different degree substituted stearoyl chitosan (DS 79% and DS 86%) by using the starting material as chitosan and deacetylated chitosan respectively.…”

Electrospun nanofiber tubes with elastomagnetic properties for biomedical use

“…Despite many synthesis and fabrication methods have already been used to fabricate nanofibers, electrospinning may be currently considered as the simplest, low cost and highly feasible technology to fabricate composite nanofibers with high resolution and high production rate [23,24]. First of all, electrospun magnetic fibers exhibit remarkable properties in terms of large specific surface area and small diameter (50-500 nm) due to the high stretching of magnetically functionalized polymer solutions under the application of electrostatic forces.…”

“…First of all, electrospun magnetic fibers exhibit remarkable properties in terms of large specific surface area and small diameter (50-500 nm) due to the high stretching of magnetically functionalized polymer solutions under the application of electrostatic forces. In MFNs fabrication, polyacrylonitrile (PAN), polystyrene (PS) or polyimide (PI) have been commonly used as polymer matrix, while iron, iron oxide, cobalt, nickel, LiCoO 2 , NiCo 2 O 4 , NiFe 2 O 4 , Fe-FeO core-shell nano particles as magnetic fillers [11,[24][25][26][27][28][29][30][31] thermal and optical response [32][33][34][35][36], but only partial studies about the relationships between elasticity and magnetization in similar systems have been performed [37]. On the other hand, recent studies are confirming the relevance of elastic and magnetic properties coupling for the development of new multifunctional nanocomposite materials to be used as sensors and actuators [38][39][40].…”

Synthesis and characterization of novel aliphatic–aromatic polyamide/Fe3O4 nanocomposites containing pendent 9H-xanthene groups

“…Among them, magnetic polymer-based nanocomposites are a promising class of inorganic-organic hybrids owing to the advantageous properties of the polymer matrix and the embedded magnetic nanoparticles (MNPs). [4][5][6] Polymer-based magnetic composites have been considered as an important material in a wide range of industrial fields, such as toner carrier, enzyme and protein immobilization, magnetic resonance imaging, RNA and DNA purification, cell separation, and targeted drug delivery. [7][8][9][10][11][12] Normally, investigations are focused on magnetic Fe 3 O 4 nanoparticles owing to their superparamagnetic, nontoxicity, biocompatibility, and ease of synthesis, [13] which can be used as a magnetic filler with high mechanical and thermal properties.…”