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The Fox equation permits the calculation of the glass transition temperature (Tg) of random copolymers. Block copolymers can depending on the size of the block continue to show the Tg of the individual co-monomers.
1/Tgco=Wf1/Tg1+Wf2/Tg2+Wfx/Tgx
Tgco= Tg of copolymer, Wfx=weight fraction of monomer x, Tgx=Tg of a polymer made from monomer x
Enter data Weight Formula Weight Wfx/Tgx Mol Monomer Weight
Monomer     fraction   fraction #  
Total     1.00
Results Temperature          
Results K C          
Tg copolymer          
Total weight            
Number of Monomers used            

Automatic recalculation 

Last edited on:

October 15, 2010

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