Silicone implants and other medical and industrial products will become cheaper and more durable thanks to a new method of synthesis of this material, open the Russian chemists. It was presented in the Journal of the American Chemical Society.
“Our approach is based on a green, commercially available, cheap, simple reagents and mild reaction conditions: molecular oxygen is the oxidant, process temperature – 40 to 60 degrees. All takes place at atmospheric pressure”, – says Ashot Arzumanyan from the Institute of Organoelement compounds Russian Academy of Sciences in Moscow,reports RIA Novosti.
The first silicone materials were discovered by chemists at the beginning of last century, however, industrial application, they found relatively recently, becoming one of the key elements of various designs which require chemical inertness and isolation of water and electricity.
Today, polymer materials, silicone can be found almost everywhere, ranging from lubricants for cars to kitchen utensils and missiles. Despite their widespread use, all of them have one common drawback – they have low mechanical strength and practically do not interact with other polymers. This considerably limits their applicability in medical, domestic and scientific purposes.
These problems, as noted Arzumanyan and his colleagues, you can decide if create is not pure silicone, and its hybrid variety by embedding it in a polymer filament molecules of other substances. Scientists have repeatedly tried to create such materials, however, all existing methods of their synthesis proved to be too expensive or complex for industrial application.
Russian chemists have discovered a relatively simple and cheap method of conducting such reactions, experimenting with molecular oxygen and a catalyst based on cobalt, actinium and some organic compounds.
Recently, scientists have discovered that oxygen under certain conditions does not destroy molecules of complex chemical compounds and accelerate reactions between them. Arzumanyan and his colleagues found that something similar can be done with silicones, heating them to a temperature of 40-60 degrees Celsius.
Following this idea, they created several new types of hybrid silicone, which is connected with the molecules of salicylic acid and some other organic compounds. Some of these materials, as noted chemists, can be used as a substitute for polyethylene terephthalate, the “king” of plastic utensils and clothes.
“The resulting compounds offer the prospect of creating samoklejushchejsja, conductive, thermo – and frost-resistant and mechanically strong silicone. They can also serve as the basis for new hybrid materials that find application in catalysis, drug delivery and storage of fuel and other fields of science, technology and medicine,” concluded Arzoumanian.