The main goal of this study was to prepare and characterize ion exchangers on nanofibrous polystyrene matrix. Starting nanofibers were sulfonated and crosslinked at the same time by sulfuric acid. Strongly acidic cation exchanger was obtained in such a way. Anion exchanger was prepared by reaction of ethylene diamine with sulfochlorides on nanofibers acquired from sulfogroups. The polymer matri...

To explore the cushioning properties of expanded polystyrene (EPS), a novel two-degree-of-freedom mathematical model is proposed with dynamic nonlinear system and successfully implemented it. The maximum response acceleration product was first determined in used as parameter for evaluating damage. Furthermore, drop test carried out to verify theoretical showed good consistency. Based on correct...

Among the plastic debris surveyed in marine environment, a large quantity terms of volume was found to be expanded polystyrene foam (EPS). This is due its light weight and popularity as packaging material. In this study, 28 compounds polycyclic aromatic hydrocarbon (PAHs) were analyzed both new beached EPS collected California, USA. EPS, variation total PAH concentrations up 2 orders magnitude ...