Research Abstracts

In this study, the electrospinning technique was applied to fabricate biocompatible membranes composed of PLLA (poly-L-lactic acid) and chitosan. With high porosity and interconnected structure, the electrospun membranes were suitable scaffolds for cell or tissue growth. In preparations, injection r

Nickel hollow fiber membranes were prepared by a phase inversion and a sintering method. A nickel hollow fiber support was prepared by spinning the polymer solution containing suspended nickel powders to a hollow fiber precursor which is then sintered at elevated temperature. For these hollow fiber

Cellulose acetate butyrate (CAB) hollow fiber membrane was prepared via both thermally induced phase separation (TIPS) and nonsolvent induced phase separation (NIPS) methods. Atomic force microscope (AFM) and scanning electron microscope (SEM) were used to observe the outer surface morphology of the

Nanoporous titania membranes, with pore sizes ranging from 1 to several nm, were prepared by sol-gel processing and applied to permeation of hexane as a model nonaqueous solution system. TiO2 membranes showed a deceased hexane flux with an increase in water concentration, which was dissolved in hexa

The extraction and transport behaviour of uranium from nitric acid medium across a supported liquid membrane has been studied using di(2-ethylhexyl)isobutyramide as the carrier. The effects of experimental parameters such as nature of diluents, e.g., n-dodecane, benzene, chloroform, tert-butyl benze

Facilitated transport of Cs-137 across supported liquid membranes (SLM) containing a calix-crown ligand viz. calix[4]arene-bis(crown-6) (CC), calix[4]arene-bis(o-benzocrown-6) (CBC) or calix[4]arene-bis(napthocrown-6) (CNC) was investigated. The feed consisted of dilute nitric acid solutions while t

This paper shows a comparative study between the two radiation grafted chitosan derivatives viz. cross-linked chitosan (CRC) and cross-linked chitosan after hydrolysis (CRCH). These chitosan derivatives were used as solid phase extractors for several radionuclides. The uptake of 137Cs, 85,89Sr, 152E

A procedure for the pre-concentration and separation of trace amounts of Eu and U by solid phase extraction using Tulsion CH-90 resin (with imino diacetate functional group) has been developed. The determinations of europium and uranium have been carried out by a radiotracer technique using 152,154E

Influence of dissolved organic carbon (DOC) on the quantitative estimation of Pu-239+240 in the groundwater was investigated. Impact of DOC in the range of 5–30 ppm was studied in solutions which were directly taken from different wells, whereas to conduct the experiment at the elevated level of DOC

Amberlite XAD-2 resin was impregnated with Cyanex272 {bis (2,4,4-trimethylpentyl) phosphinic acid} and Cyanex302 {bis (2,4,4-trimethylpentyl) monothiophosphinic acid}. Systematic studies of Cyanex302 impregnated XAD-2 were carried out to develop optimum conditions for uranium(VI) sorption and devise