INTRODUCTION Polymer blends are of great interest because they provide an economical route to design and produce novel materials that meet the challenging requirements for industrial applications. Recently, a variety of experimental and theoretical work has been conducted as a means for producing materials with improved properties compared to those of its constituents. Some of the findings sugg...

Mass transport properties were investigated by means of the chronoamperometry method for a series of sulfonated poly~arylene ether sulfone! ~SPES! membranes and sulfonated polysulfide sulfone ~SPSS! polymers of various ion exchange capacities ~IEC! at a Pt ~microelectrode!/proton exchange membrane ~PEM! interface. The temperature and pressure dependence of oxygen transport parameters show simil...

The interest in a better understanding of the specific interactions of phosphor-organic compounds and water with sulfonated polystyrene (sPS) is motivated by the use of block copolymers as protective membranes against chemical warfare agents. Using classical molecular dynamics simulations, we explored the nanoscale segregation and diffusion of water and nerve gas simulant dimethylmethylphosphon...

In this study, synthetic sulfonated polymers were used in order to enhance the rheological properties of drilling fluids. The capability of these polymers in reducing the effects of environmentally friendly, but harmful, pollutants such as cement, calcium chloride, gypsum as well as pH changes were investigated. In the present work, two sulfonated synthetic polymers, namely Polythin and Polydri...

0014-3057/$ see front matter 2010 Published b doi:10.1016/j.eurpolymj.2010.03.005 * Corresponding author. Tel.: +82 2 958 5299; fax E-mail address: [email protected] (H.-J. Kim). Polymer blending is used to modify or improve the dimensional and thermal stability of any two different polymers or copolymers. In this study, both sulfonated polybenzimidazole homopolymer (MS-p-PBI 100) and sulfonat...

Nonfluorinated polymeric materials are attracting increasing attention as alternatives to perfluorinated polymer membranes, such as Nafion or Aciplex, for use as proton exchange membranes (PEMs) in fuel cells, because of their advantages in terms of cost, monomer toxicity, ease of synthesis, and structural diversity. Although nonfluorinated PEMs can achieve high proton conductivities when they ...

Sulfonated poly (ether ether ketone) (SPEEK) with a low degree of sulfonation (DS = 40%) was prepared for proton exchange membrane fuel cells (PEMFC). Poly (ether ether ketone) (PEEK) was sulfonated in concentrated H2SO4 under N2 atmosphere and characterized by the hydrogen nuclear magnetic resonance (H-NMR) technique. After preparation of the SPEEK polymer, the obtained polymer was dissolved i...

Stable nanoparticle dispersion in aqueous solutions was obtained with partially sulfonated polystyrene. The hydrophobic association of the backbone chains and phenyl groups is balanced by the electrostatic repulsion of the sulfonate groups on the particle surface. The size distribution of the sulfonated polystyrene particles in relation to concentration, degree of sulfonation and chain length, ...