Radiation Processing Basics
Electrons & X-rays
Energy,power,dose
Accelerators
Radiation effects
Crosslinking
The Industry
Food Irradiation
Online Sterilization

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Radiation Processing Versus Traditional Materials Processing

“Radiation processing” refers to the use of radiation to change the properties of materials on an industrial scale. When radiation passes through materials it breaks chemical bonds. Thus, while heat and chemicals have been used for many centuries to modify materials, the new modality is different because, -

• The total energy required to effect a given chemical change is often much smaller, and
• The radiation can pass into the item treated and effect changes throughout, not just from the outer surface.

The use of radiation is well developed in several industrial sectors,

• Biological (including medical device sterilization and bio-control for quarantine and food processing), and
• Polymer Chemical applications including crosslinking to improve or provide unique properties, the curing of composites and the degradation and destruction of polymers.

  Radiation, as an industrial process is less well developed in other areas such as,

  • Remediation of bio-environmental hazards (sewage sludge treatment), and
  • The destruction of hazardous chemicals.

  Electron Beam Uses

  Sterilization	Single-use Medical, Agricultural, Quarantine, Packaging
  Polymers	Pellets of EVA, Moulded items, Teflon, Composites
  Cellulose	Viscose, Cellulose ethers and acetates
  Food	Herbs, Spices, Red Meat, Poultry
  Environment	Chemical or Biological Wastes

  Links to background reading

  • Radiation, Irradiation and Radioactivity

  • Understanding the Physics behind Accelerator Specifications

  • Accelerators: How They Work and Who Builds Them

  • The Radiation processing Industry

  • Non-medical uses of Accelerators (Industry and the Environment)

  • Conferences & Journals

   

   

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