Ionic interactions offer the highest non-covalent cohesive strength in supramolecular assemblies. In spite of that, they have been consistently underestimated development self-healing materials due to their lack directionality and association specificity. this paper, ionic moieties are introduced as side-chain pendants poly(urea-urethane) siloxane-based polymers, aiming obtain a strong yet flex...

Poly(alkyl-terphenyl piperidinium) ionomers and membranes were used for H2–O2 anion exchange membrane fuel cells, achieved a high power density of 2.58 W cm−2, which is new record polyaromatic-based cells. Details the study are described by Young Moo Lee co-workers in their Research Article on page 7710.

Improving cell performance and durability through both new materials and membrane electrode processing optimization is needed for the commercialization of alkaline membrane fuel cell (AMFC) technologies. In this work, we adopted an in-situ cross-linking strategy of an anion-conducting block copolymer to prepare durable ionomers for use in alkaline membrane fuel cells (AMFCs). Our goal was to us...

Styrene causes both liver and lung damage in non-Swiss albino, CD-1, and other strains of mice. This is considered to be due to the bioactivation of styrene to styrene oxide by cytochromes P450, principally CYP2E1 and CYP2F2. If so, one would expect CYP2E1 knockout mice to be less susceptible to styrene-induced toxicity than wild-type mice. However, previous in vitro and in vivo studies demonst...

Environmental chamber experiments and computer model calculations were conducted to assess the impacts of the gas-phase reactions of styrene on the atmospheric formation of ozone and styrene's known oxidation products. The experiments consisted of determining the effects of adding styrene on ozone formation, NO oxidation, integrated OH radical levels, and formation of benzaldehyde, formaldehyde...

Current EPA emission factors (AP42) for styrene emissions from the production of polyester-resin-reinforced plastic products represent a composite of spraying and post-spraying emissions (from curing molds) from shower stall/bathtub manufacturing plants that use compressed-air-powered spray guns to apply catalyzed styrene resins to prepared molds. Because each step of manufacture (gel coating, ...

A new approach for fabricating a series of multi-functional honeycomb-patterned films was successfully achieved using ionomers via breath figures.

"Compomers" are recently introduced products marketed as a new class of dental materials. These materials are said to provide the combined benefits of composites (the "comp" in their name) and glass ionomers ("omer"). Based on a critical review of the literature, the author argues that "compomers" do not represent a new class of dental materials but are merely a marketing name given to a dental...

OBJECTIVE To understand whether previous styrene exposure increases the human liver's ability to convert styrene into styrene oxide. METHODS The hypothesis was tested that the average linear metabolic rate constant kappa was the same in both exposed and unexposed groups, when the exposed group comprised people with a history of styrene exposure and the unexposed group had no exposure. In an e...

An effort was made to improve the separation issue of styrene-butadiene-styrene modifiers in styrene-butadiene-styrene-modified asphalt binders and further enhance their performance by adding nano-ZnO binder prepare compound modified binder. First, optimum dosage determined based on conventional tests, i.e., penetration, ring ball softening point, ductility at a fixed dosage; then, dynamic shea...