Research Abstracts

The predicting equations for the mass-transfer rate and mass-transfer efficiency in a concentric circular membrane extractor module under concurrent- and countercurrent-flow with various barrier locations were derived theoretically by calculating the mass balance on each subchannel. The analytical s

Small cold plasma zone treatment is an important modification technique in modern industry. In this study, the effect of gas flow direction on plasma treatment was investigated. In order to decrease the plasma zone area, we added a separate cylinder to surround the upper electrode. Separate cylinder

Biodegradable polymer/layered silicate nanocomposite membranes were prepared by solution casting method for the application of dehumidification and gas separation. The intercalation and exfoliation of clay in the prepared nanocomposite membranes were confirmed through X-ray diffraction study (XRD).

Nylon 6/clay nanocomposites of various clay minerals with different cation exchange capacity (CEC) were prepared by in situ polymerization method and properties like mechanical, thermal and gas permeability were compared with respect to pure nylon 6 (N6) polymer. The functional groups of clay and "-

A series of sulfonated polystyrene-b-poly(ethylene-r-butylene)-b-polystyrene (S-SEBS) membranes with high water permeability and thermo-mechanical stability were prepared to estimate the membrane utility for heating/ ventilation/air conditioner (HVAC) system. The sulfonation degrees of membranes wer

N,O-carboxymethyl chitosan (NOCC) composite nanofiltration membranes crosslinked by ECH were developed using a method of coating and crosslinking, where an epichlorohydrin/ethanol 96.7% (0.067 M KOH) solution was used as the crosslinking agent. The structure and the morphology of the resulting membr

A novel polyvinyl alcohol/hydroxyapatite (PVA/HAP) composite polymer membrane was prepared by the direct blend process and solution casting method. Glutaraldehyde (GA) was used as a crosslinker for the composite polymer membrane in order to enhance the chemical, thermal and mechanical stabilities an

In this work the Atterberg limits tests were used first for understanding the effects of starch addition to the plasticity of paste. The green substrates of tubular porous ceramic membranes consisting of starch were prepared using the extrusion method, followed by curing, drying, and sintering proce

In this study, a series of polycarbonate/polyacrylonitrile (PC/PAN) composite membrane has been successfully fabricated by vapor-induced phase separation and in-situ casting process. The effect of the casting solution concentration on the membrane morphology was investigated. The morphology of the P

Polytetrafluoroethylene (PTFE) is a remarkable membrane material. Due to its high melting point, PTFE fine powder cannot be processed using the conventional melting processing methods. Instead, techniques such as paste extrusion, rolling and sintering have to be employed. In this paper, a PID contro