Jump to content

Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog


Glass Transition

glass transition molecular weight polymers

1 reply to this topic
Share this topic:
| More

#1 Kmfood


    Brand New Member

  • Members
  • 2 posts

Posted 08 April 2019 - 03:05 PM

Hello everyone, 


So I just wanted a little more clarity on glass transitions temperatures, specifically what would cause a glass transition temperature of one polymer to be greater than another polymer. I understand that the higher a polymers molecular weight is the greater the Tg value is, but I was wondering if there were any other reasons for the glass transition to be greater?

#2 latexman


    Gold Member

  • ChE Plus Subscriber
  • 1,011 posts

Posted 08 April 2019 - 03:20 PM   Best Answer

Branching causes entanglement which affects Tg.  Different groups in the polymer backbone are stiffer than others (intermolecular forces).  Cross-linking affects Tg greatly.  Plasticizers lower Tg.  There may be others.

Similar Topics