Helium separation by cellulose acetate membranes

Cellulose Acetate Nanofiltration Membranes for Cadmium Remediation

In this work, cellulose acetate (CA) nanofiltration (NF) membranes were prepared via non-solvent phase inversion technique (NIPS). Polymer concentration was varied from 22 to 25 wt% in order to study its effect on the membrane properties. The fabricated membranes were characterized in terms of morphological analysis using scanning electron microscopy (SEM), contact angle, water content, water p...

Studies of Electrospun Cellulose Acetate Nanofibrous Membranes

The objective of this work was to study the feasibility of preparing cellulose acetate (CA) nanofibrous membranes by electrospinning with single solvent and their potential applying as affinity membrane. CA solutions in dichloromethane (DCM), formic acid, acetic acid and trifluoroacetic acid (TFA) were electrospun into nonwoven fiber membranes, respectively. The scanning electron microscope (SE...

Dissolution control of Mg by cellulose acetate-polyelectrolyte membranes.

Cellulose acetate (CA)-based membranes are used for Mg dissolution control: the permeability of the membrane is adjusted by additions of the polyelectrolyte, poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA). Spin-coated films were characterized with FT-IR, and once exposed to an aqueous solution the film distends and starts acting as a membrane which controls the flow of ions and H2 gas. Ele...

Purification of PCR-Inhibitory Components by Cellulose Acetate Membranes

Conventional methods for extracting DNA from blood results in the presence of heme, which is an inhibitory factor decreasing PCR sensitivity. Current techniques for removing the inhibitors are laborious, costly, and/or sample-specific. We investigated using electrophoresis and a biopolymer membrane to separate DNA from heme. These membranes are biocompatible, can be cast directly onto silicon w...

Separation of haemoglobins on cellulose acetate.