eur op eanexhibitionofcreati vityandinnovation - Europe Direct Iasi
eur op eanexhibitionofcreati vityandinnovation - Europe Direct Iasi
eur op eanexhibitionofcreati vityandinnovation - Europe Direct Iasi
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EUROINVENT 2013<br />
38.3<br />
Title<br />
Multifunctional Bicomponent Acrylic Membranes and<br />
Process for their Obtaining<br />
Authors<br />
Sârbu Andrei, Sandu Teodor, Sârbu Liliana, Lungu<br />
Anamaria<br />
Institution ICECHIM, Bucharest<br />
Patent no. A/00139/ 08.02.2013<br />
The invention presents the obtaining of multifunctional<br />
bicomponent acrylic membranes, having micro and<br />
ultrafiltration uses, having good mechanical pr<strong>op</strong>erties and<br />
on which are covalently immobilized enzymes, with<br />
application in the filtration of waste waters and in<br />
biotechnology, as well as the process for their obtaining.<br />
The invention is based on wet phase inversion of a solution<br />
Description<br />
of 2 polymers: the first is an acrylic c<strong>op</strong>olymer and the<br />
second is polyvinyl alcohol (PVA).<br />
The phase inversion takes place in a bath containing 2<br />
nonsolvents for the acrylic c<strong>op</strong>olymer but a nonsolvent and a<br />
solvent for the PVA, the difference in the coagulation rate<br />
leading to the pore formation and polyvinyl alcohol leading<br />
to an increase of the hydr<strong>op</strong>hilicity of the membrane. After<br />
the membrane functionalisation an enzyme is covalently<br />
bounded.<br />
Class 1. Environment - Pollution Control<br />
M4-100 μm<br />
M4-100 μm<br />
M 5-100 μm<br />
M 5-100 μm<br />
M 6-100 μm<br />
M 6-100 μm<br />
AFM Images of 3 membranes at various ratios C<strong>op</strong>olymer: PVA<br />
NATIONAL<br />
212
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