Propylene oxide (1,2-epoxypropane) is a nasal toxicant and weak site-of-contact carcinogen in the rodent. The current study was aimed at providing quantitative information on upper respiratory tract (URT) dosimetry of this vapor. Since depletion of nasal non-protein sulfhydryls (NPSH) may be important in the toxicity of this vapor and may serve as a biomarker for delivery of propylene oxide to ...

Abstract Structure–properties relationship in complex rubber nanocomposites is a key for enlarging the performance window. Herein, halloysite nanotubes (HNTs) are added at variable content to ethylene-propylene diene monomer (EPDM)/nitrile butadiene (NBR) blends compatibilized with maleic anhydride grafted HNTs evaluate cure characteristics, along microstructure, and mechanical swelling behavio...

Separation of propylene-propane mixture using immobilized liquid membrane was investigated. The effect of transmembrane pressure and carrier concentration on membrane separation performance was studied. It was observed that for 30:70 (vol. %) propylene-propane mixture, at pressure of 120kPa and carrier concentration of 20wt. %, a separation factor of 474 was obtained. Keywords—Facilitated Trans...

A Cu(i)-containing room temperature ionic liquid (Cu-RTIL), prepared from CuCl and 1,3-dimethylimidazolium methylphosphite ([DMIM][MeHPO(3)]), was found to reversibly and selectively interact with propyne over propylene. Cu-RTIL exhibited 12 times higher propyne absorption capacity and 14 times higher ideal propyne/propylene selectivity than [DMIM][MeHPO(3)]. Fast atom bombardment (FAB)-mass sp...

Thermoplastic elastomers (TPEs) are provided with many properties of elastomeric or rubbery materials, but can be processed with the thermoplastic processing methods; they are one of the fastest growing polymers materials which combine the elastic and mechanical properties of crosslinked rubbers with the melt processability of thermoplastics. In addition, TPEs find a lot of applications in auto...

Plastic/rubber materials used as fasteners in equipment for analyzing or removing organic pollutants water treatment technologies form an essential part of the device. Micropollutants are typically present at very low concentrations (ng/L to µg/L). Therefore, when designing, example, units advanced oxidation processes (AOPs) planning sample handling, it is necessary assess whether material comp...

in this article the transient heat transfer in rubber parts has been studied. this study is usefull for estimation of the minimum curing time of the rubber parts and thereby to ensure the quality of the rubber. also is the temperature distribution during the rubber curing is well know, then the curing time could accurately be estimated, which will lead to a better curing process. in this regard...

Abstract Improper disposal and accumulation of waste tire rubbers have posed a serious threat to the development circular economy, sustainable environment, human health. In light drawback current management tires, recycling transformation reclaimed rubber (RR) into valuable end products has received significant attention from industries academic field. Herein, we propose facile method reuse RR ...