determination of glass transition temperature

thermal analysis – determination of glass transition temperature

Need help? Want more information? Get in touch now or phone +44 (0) 1324 489182
determination of crystallisation kinetics

determination of glass transition temperature

Amorphous and partially crystalline plastics when heated pass from the glassy-viscous to the rubbery state. The temperature at which this transition occurs is the glass transition temperature, Tg. One of the most precise techniques to obtain the Tg of the polymers is the differential scanning calorimetry, DSC (ISO 11357-3, ASTM E1356).

A small piece of plastics (approximately 10 mg) is heated and cooled at a control rate under nitrogen. During the heating and the cooling cycles the following parameters are obtained:

  • Glass transition temperature
  • Glass transition step height: difference in specific heat capacity at Tg

why impact?

Some members of impact’s team have over 30 years of polymer experience, with over 120 years combined, and are internationally regarded as product experts including sitting on various CEN committees and being a notified body for construction products (Note because of our notified body status we cannot undertake consultancy on oil storage tanks), we can often identify potential sources of weakness in products without even undertaken testing using our experience.

Find out more about our experts here, or visit our about page.  Alternatively you can get in touch with one of our experts for more information.

plastic testing experts

plastic testing home

list of lab tests