Ceramic membrane composites consisting of a coarse porous a-alumina or two-layer porous alumina membrane support and an oxygen semipermeable gas tight thin (0.2-5 pm) yttria stabilized zirconia (YSZ) film are prepared by the electrochemical vapor deposition (EVD) method. The minimum gastight thickness of the YSZ films depends strongly on the average pore size of the support on which the films a...

A selectively cross-linking method, which is based on the ‘‘di–diol” interaction between poly(vinyl alcohol) and borate and the strong electrostatic interaction between chitosan and tripolyphosphate, was developed. Chitosan/poly(vinyl alcohol) films cross-linked separately with borate, tripolyphosphate and borate/tripolyphosphate were then prepared in terms of this method. Water vapor permeatio...

In the present work, B-ZSM-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. The TiO2- Bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. The uniform membrane intermediate layers with low permeation resistance were...

The wear comfort depends on the condition of micro-space between cloth and skin of human body. Heat and mass transfer occurs through clothing due to heat and sweat evaporation release from human body in this space. This paper applied a new measurement technique that combines infrared ray absorption method and holographic interferometry to this space to obtain the transient temperature and conce...

The article presents a methodology for determining the required resistance to vapor permeation of outer layer multilayer building envelope, based on condition that there is no condensation water in it. When deriving formula, an analytical dependence was used determine elasticity saturated vapor, obtained by authors this article. With help proposed technique, assessment thermal and humidity regi...