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High Temperature Permeation Testing February 10 th , 2010 2010 Webinar Series Presenter: Joel Fischer   MOCON Lab Manager
High-barrier Materials and High Temperature Applications Flexible  Display Solar Panels OLED Cell Phone Screen
Permeation  -  Solution-Diffusion Mechanism <ul><li>The gas absorbs at the entering face  </li></ul><ul><li>D iffuses thro...
Permeation  –  How is it measured?
Equilibrium <ul><li>There is no universal time to reach equilibrium. </li></ul><ul><li>Each material has its own nature. G...
Permeation <ul><li>Permeation is simply the flux of molecules through a material. </li></ul><ul><li>Units of permeation “e...
Permeation basics Permeation rate Transmission rate
<ul><li>Permeability can be defined as the product of the solubility coefficient and the diffusion coefficient </li></ul><...
Solubility <ul><li>Solubility relates the concentration of permeant within the film to the partial pressure of the permean...
Diffusion <ul><li>Diffusion is the process by which matter is transported from one part of a system to another as a result...
Temperature Impact on Permeation? <ul><li>As Temp Increases    Solubility decreases  </li></ul><ul><li>As Temp Increases ...
Temperature and  Transmission Rate
MOCON Equipment   Temperature Range (10-40C or 5-50C)
High Temperature Set-up  <ul><li>Remote permeation test cells </li></ul><ul><li>High temperature Oven </li></ul>
High Temperature WVTR Cell
Two cells loaded in the oven
Water trap for “insurance”
Two cells attached to instrument
Water Vapor Film Test Aquatran Results
Water Vapor Film Test Aquatran Results
Water Vapor Film Test Aquatran Results
Beware … Film melting temperature Polymer Tg (glass transition temperature)
Edge Seal Testing Clausen & Dabruzzi (3M) – DOE Solid-State Lighting Manufacturing Workshop, June 24-25 2009
Whole Package Testing
<ul><li>THANK YOU! </li></ul>For additional questions or a copy of today’s seminar, please send an email to [email_address...
Please join us for 2 upcoming seminars: Presented in Spanish: “ Package Integrity - How to get started” Wed. February 17 t...
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High Temperature Permeation Testing Webinar

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Higher temperature transmission rate testing is increasing in importance for characterizing materials that need to survive
elevated temperatures (Solar Panels) or characterizing high barrier samples that would be difficult to measure at lower temperatures. This Webinar will discuss the theory of high barrier testing and show applications for both OTR and WVTR tests with special detail given to a new permeation test cell to aid with WVTR testing

High Temperature Permeation Testing Webinar

  1. 1. High Temperature Permeation Testing February 10 th , 2010 2010 Webinar Series Presenter: Joel Fischer MOCON Lab Manager
  2. 2. High-barrier Materials and High Temperature Applications Flexible Display Solar Panels OLED Cell Phone Screen
  3. 3. Permeation - Solution-Diffusion Mechanism <ul><li>The gas absorbs at the entering face </li></ul><ul><li>D iffuses through the polymer phase </li></ul><ul><li>D esorbs or outgase s at the low-pressure side . </li></ul>
  4. 4. Permeation – How is it measured?
  5. 5. Equilibrium <ul><li>There is no universal time to reach equilibrium. </li></ul><ul><li>Each material has its own nature. Generally speaking, </li></ul><ul><li>the better the barrier, the longer it takes. </li></ul>Normal barrier sample Permeation – What does it look like?
  6. 6. Permeation <ul><li>Permeation is simply the flux of molecules through a material. </li></ul><ul><li>Units of permeation “explain” the mechanism : </li></ul>volume of gas at STP material thickness area time pressure drop, driving force
  7. 7. Permeation basics Permeation rate Transmission rate
  8. 8. <ul><li>Permeability can be defined as the product of the solubility coefficient and the diffusion coefficient </li></ul><ul><li>P= S • D </li></ul>Permeability Solubility coefficient Diffusion coefficient
  9. 9. Solubility <ul><li>Solubility relates the concentration of permeant within the film to the partial pressure of the permeant. </li></ul><ul><li>Units of S : </li></ul>
  10. 10. Diffusion <ul><li>Diffusion is the process by which matter is transported from one part of a system to another as a result of random molecular motions. </li></ul><ul><li>Units of D : </li></ul>
  11. 11. Temperature Impact on Permeation? <ul><li>As Temp Increases  Solubility decreases </li></ul><ul><li>As Temp Increases  Diffusion increases </li></ul><ul><li>P = S x D </li></ul><ul><li>D over-rides S in the above equation and…. </li></ul><ul><li>Generally: For every 10C increase in Temp, the Permeation Rate Doubles </li></ul>
  12. 12. Temperature and Transmission Rate
  13. 13. MOCON Equipment Temperature Range (10-40C or 5-50C)
  14. 14. High Temperature Set-up <ul><li>Remote permeation test cells </li></ul><ul><li>High temperature Oven </li></ul>
  15. 15. High Temperature WVTR Cell
  16. 16. Two cells loaded in the oven
  17. 17. Water trap for “insurance”
  18. 18. Two cells attached to instrument
  19. 19. Water Vapor Film Test Aquatran Results
  20. 20. Water Vapor Film Test Aquatran Results
  21. 21. Water Vapor Film Test Aquatran Results
  22. 22. Beware … Film melting temperature Polymer Tg (glass transition temperature)
  23. 23. Edge Seal Testing Clausen & Dabruzzi (3M) – DOE Solid-State Lighting Manufacturing Workshop, June 24-25 2009
  24. 24. Whole Package Testing
  25. 25. <ul><li>THANK YOU! </li></ul>For additional questions or a copy of today’s seminar, please send an email to [email_address] or go to www.mocon.com
  26. 26. Please join us for 2 upcoming seminars: Presented in Spanish: “ Package Integrity - How to get started” Wed. February 17 th at 10am CDT Presented in English: “ Shelf Life Studies- Basics,Concepts & Principals ” Wed. March 10th at 10am CDT enroll online at www.mocon.com/events

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