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Simplicity and Efficiency: RUDN University Chemists Discover New Unique Approach to Creating Smart Packaging

Simplicity and Efficiency: RUDN University Chemists Discover New Unique Approach to Creating Smart Packaging

RUDN University chemists have discovered a unique method for making plastic film based on natural polysaccharides. It simultaneously has antioxidant, antimicrobial and barrier properties, and protects the content against ultraviolet exposure. Using the film to package and coat food products will considerably extend their shelf life.

The history of production of polymer coatings with protection properties is not new. However, the methods are being improved, thereby enhancing fundamental science. RUDN University chemists developed nanoparticles where the following four properties are combined not separately but altogether: the first one is traditional – barrier property, and the rest are so called active properties: antioxidant, antimicrobial properties and the ones which protect the product against ultraviolet exposure.

The basis for polymer coatings is bilayer. The unique combination and proportions of polymer components make it possible to obtain films with the following properties:

  • low permeability to water vapour and oxygen,
  • enhanced mechanic properties: high-tensile strength,
  • active properties, i.e. apparent antibacterial and fungicidal effects.

Traditional packaging has only barrier properties. It includes the packaging we are used to seeing every day: plastic, vacuum one. Imagine that you buy a carton of milk or a pack of sausages – they will be in so called traditional packaging.

If the packaging has antibacterial properties, protects against ultraviolet exposure, or has any other properties – it is called active. A whole range of chemical “introductions” are carried out to make each of its variations. For example, it makes sense to introduce antioxidants into the packaging if it has antibacterial properties.

The packaging is not only barrier and active but also smart. This means that it can respond to changes in the environment, for example, to the increase in humidity and temperature which is not acceptable for the film-wrapped product. The wrapping will change colour in such cases.

The discovered method for combining has many useful properties altogether: antibacterial, antioxidant, and antimicrobial, as well as smart properties. The same nanoparticles are responsible for all these properties. It is the method that is unique. Moreover, the obtained films are biocompatible, biodegradable. They are absolutely non-toxic. Such films are in line with the global trend of going green – this is real green chemistry, i.e. which is environmentally friendly.

The method is environmentally friendly, safe, simple and cost-efficient. It is the first time the most important useful properties for extending the shelf life of products have been combined. The invented compound can be used as the film in which the product will be wrapped: this will not involve its quality changes. Moreover, the immersion method seems promising: as the material is completely safe, the products can be immersed into it, thereby creating a protective film.

Scientific Conferences View all
03 Nov 2017
RUDN University organized the first 5G Summit R&D Russia on June 19 - 20, 2017
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Student's Scientific Initiatives View all
03 Nov 2017
June 22 - 26, 2017 in Barnaul, Altai State University, took place the Summer Academy of the BRICS Youth Assembly, an international event that brought together representatives of different countries
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07 Jul
RUDN University Biologist: salted water saves fish from stress when transporting

RUDN University biologist with colleagues from Brazil and Iran found how to alleviate the stress of fish during transportation. It turned out that this can be achieved with salted water.

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20 Apr
RUDN University agronomists increased wheat yield by 65%

RUDN University agronomists have proposed a new scheme for fertilizing winter wheat, which allows increasing the yield by 68%. The key to this is in the combination of nitrogen and growth regulators.

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20 Apr
RUDN Biologists Study Live Microorganisms in Toxic Liquids for Metalworking

RUDN biologists have studied microorganisms that can survive in metalworking fluids. The results will allow “picking up” bacteria and fungi that can process toxic waste fluids into a harmless product.

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