The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
To improve the chemical stability and acid doping levels of proton exchange membranes, a series of sulfonated polybenzimidazole multiblock copolymers containing pyridine rings (sPBI40-b-PyPBI5-b-PIx) was synthesized. All the copolymers exhibited excellent solubility. The proton exchange membranes were prepared using a solvent casting method. All the membranes were characterized by thermal stability,...
Sulfonated polybenzimidazole-polyimide block copolymers are synthesized through condensation polymerization at high temperature. The length of the polyimide chain is varied to give a series of block copolymers with various block lengths. The as-synthesized block polymers are used to prepare the corresponding membranes through the solvent evaporation method. The structure of the block copolymers is...
A monitoring technique based on the chloride selective electrodes for the chloride content in concrete which is accurate, non-destructive, and continuous would be highly desirable. For this reason, the performance, such as Nernst response and resisting polarization, of the electrode was tested both in simulated concrete pore solutions and concrete. Moreover, the surface morphology of electrode after...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.