Rheological and morphological characteristics of multicomponent polysulfone/poly(vinyl alcohol) systems

Abstract

Synergistic effects of composition, polymer structure and specific interactions on the rheological and morphological aspects of polysulfone/poly(vinyl alcohol) blends were investigated for a better understanding and control for their prospective application in biomedicine.

Ionic transport processes in polymer mixture solutions based on quaternized polysulfones

“…Polysulfones, produced through polycondensation, are known as high-performance materials with superior thermal, chemical, and mechanical properties, which represents an advantage for many applications, such as filtration membranes [28][29][30][31][32], coatings [33,34], composites [35][36][37], microelectronic devices [38], thin film technology [39], biomaterials [25,37,40], and fuel cells [41][42][43][44]. Introduction of functional groups into polysulfones solves some limitations, and also extends the range of potential applications of these high-performance materials through the specific properties gained, and thus provides wider scope.…”

<strong>Fundamental perspectives on development of conductive blends based on quaternized polysulfone: Optical and dielectric response</strong>

“…For 70/30 wt./wt. composition of PSFQ/CAP blend can be seen that, the -OH absorption band around of 3460 1/cm due to the inter-and intramolecular hydrogen bonding [6], moves easily to higher wavenumbers, as a result of PSFQ increase in compositions. However, a slight change of the shape, intensity, and displacements in the direction of the higher wavenumbers occurs, indicating that the addition of CAP at PSFQ solutions, in order to improve optical and electrical performances of the blends, generates new type of interactions.…”

“…Considering the excellent properties [5,6] and implicitly, the possibilities of use in a wide variety of applications from biomedicine to electronics, namely membranes for hemodialysis, ionic exchange, or gas separation, medical accessories (i.e., surgical trays, nebulizers, humidifiers), food processing equipment, and/or used in the electrical and electronics components, for example as a dielectric in capacitors [7,8], polysulfones (PSFs) are recommended as proper conductive materials. Nevertheless, there are also drawbacks in the use of these polymers in some applications, the main disadvantage being their relative hydrophobic character.…”

Preparation of Hollow Fiber Membranes by Nonsolvent Induced Phase Separation along with Hydrogen Gas Formation Using a Single Orifice Spinneret

“…In a typical solution spinning and phase inversion process, an HFM is fabricated by extruding a concentrated polymeric solution through an annular gap of a concentric orifice spinneret into the external coagulation bath . NIPS process is based on the exchange of solvent present inside the polymer solution with the nonsolvent in the coagulation bath to induce a phase separation of polymer solution from a liquid dispersion to a solid state . In the wet spinning method, the diameter and wall thickness of the HFMs mainly depends upon the inner/outer diameter of the spinneret and the properties of polymer solution, since the stretching of the fibers is quite limited in this process.…”