The in-situ formation of dispersed polyaramide whiskers during melt processing of polymers represents a new route to thermoplastic and elastomeric organic microcomposites. When N-(p-aminobenzoy1)-caprolactam (PAC) is injected into melts of high molecular weight polyamide-6 or dihydroxy-terminated poly(oxytetramethylene) liquid rubber, stable dispersions of polymeric whiskers are formed. At temp...

Two-dimensional covalent organic frameworks (2D COFs) have attracted attention as versatile active materials in many applications. Recent advances demonstrated the synthesis of monolayer 2D COF via an air–water interface. However, interfacial polymerization mechanism has been elusive. In this work, we used a multiscale modeling strategy to study dimethylmethylene-bridged triphenylamine building...

During interfacial polymerization (IP) reaction between m-phenylenediamine (MPDA) and trimesoyl chloride (TMC), a by-product, i.e. hydrochloric acid can produce. This produced acid diffuses back in aqueous phase and protonates MPDA and reduces its reactivity that results in lowering of polymer yield and performance of membrane. Further, for getting consistency in reverse...

The latest adhesive systems require fewer and simpler application steps and have shorter application times in clinical settings1), leading to time-saving options such as single-step self-etch adhesives2). Recent trend in adhesive systems is the use of the so-called universal adhesive which can be used with total-etch, self-etch, or selective-etch techniques3), and can also be used to bond to a ...

the purpose of the present paper is to develop light beam method to measurement of interfacial area in a rectangular gas-liquid bubble column. total interfacial area can be determined in bubble column filled by transparent liquid by light transmission method. according to pervious researches, the fraction of parallel light is function of interfacial area and optical path length that these two p...

Surface modification of polyethersulfone (PES) membrane surfaces using UV lozone pretreatment with sub­ sequent grafting and interfacial polymerization on membrane surface was investigated in order to improve the resistance of membrane surface to protein adsorption. The surface modifications were evaluated in terms of hydrophilicity, chemical composition of the surface and static protein adsorp...