Russian scientists developed and patented a very effective and convenient filter. This filter purifies various types of petroleum products, solvents and oils from dirt particles and water drops. Designers claim most important feature of this filter to be gradually changing pore diameter, which can vary within wide range of predetermined parameters.
Filters are made of a special material – a polymer, based on polyvinyl formal, which molecules look like long chains, consisting of three types of links: acetate, vinyl-acetate and vinyl-alcohol. These names are not music to ears of those, who forgot school programme in chemistry, however, main point of this development is that ratio of these three components defines polymer properties. Varying abovementioned ratio, scientists developed synthesis technique for a polymer, which is good sorbing agent for water and doesn’t dissolve in organic liquids, for example, benzene, kerosene, and various kinds of oils.
So, what shall we do to wash this filter? The process is easy – you add special SAAs (surface acting agents), which are Russian know-how, to water and dirt washes off a filter, which is reusable. Such filters can be used in many ways: their unique properties – high porosity, mechanical stability and chemical resistance; possible multiple regeneration; high filtration capacity and extremely low hydraulic resistance – define wide application fields for this development of Russian scientists. These filters are ideal for oil purification, as well as car, airplane and ship fuels, vegetable oil and various solvents. These filters work even with gases – they can be filtered and dehydrated by means of new generation of sorbing and filtering polymer substances, developed by Russian chemists.
Source: Russian Science News
Kizilova Anna