Novel high temperature polymer electrolyte membranes (HT-PEMs) are fabricated from commercial and low-cost poly (ether ketone cardo) (PEK-Cardo). Rather than normal chloromethylation quaternization procedure to introduce basic groups into (arylene ether)s, three different long side-chain grafted PEK-Cardo through a facile one-step lactamization between the cardo phenolphthalein type moiety in a...

The article considers a new indicator method for identifying zones of carbonization (neutralization) concrete, which can be successfully applied in the practice inspections building structures made concrete and reinforced (at field laboratory stages work). aspects occurrence course process are considered. cases its influence on durability various objects (industrial, transport, civil, hydraulic...

Abstract The corrosion‐related damages on concrete infrastructure account globally for several billion US dollars annually. Up to 38 % of these costs could be saved by the application optimized materials and/or more efficient monitoring technologies. In this contribution a novel sensor technology is presented, based luminescent pH sensitive dyes, quantitatively determine distribution in cement‐...

Challenges exist for the study of time dependent sorption processes for heterogeneous systems, especially in the case of dispersed nanomaterials in solvents or solutions because they are not well suited to conventional batch kinetic experiments. In this study, a comparison of batch versus a one-pot setup in two variable configurations was evaluated for the study of uptake kinetics in heterogene...

Though optically pumped lasing has been realized for years, electrically pumped lasing has not yet been achieved in organic semiconductor devices. In order to make a better understanding of the laser mechanisms of the organic materials, we prepared organic thin films consisting of three efficient laser dyes of a blue emitter, 4″,4″'-N,N-diphenylamine-4,4'-diphenyl-1,1'-binaphthyl (BN), a green ...

Indonesia is known for its biodiversity of various types, example, plants, in there are around 9000 species plants that have traditional medicinal properties, 5% as phytopharmaca ingredients, and 1000s plant can be used herbal medicine. People often manage herbs with chemicals so they not by the regulations set government, this evidenced findings medicine (BKO).. This review article draws from ...

Five different molecular weight phenolphthalein poly(aryl ether ketone) (PEK-C) fractions in CHCl3 were studied by static and dynamic laser light scattering (LLS). The dynamic LLS revealed that the PEK-C samples contain some large polymer clusters. These large clusters can be removed by filtering the solution with a 0.1-μm filter. We found that the persistence length of PEK-C in CHCl3 at 25 °C ...