Hi Everyone.,
I degassed the PDMS for 1 hr using vacuum dessicator .
I immediately cured the PDMS at same 120 degree
celcius., no bubbles were found.
When I repeated the same after 30 minutes after
degassing, lot of bubbles got introduced.
Whether PDMS again absorbs the air (from atmosphere)
after degassing????
Regards
Bala.,
Mcmaster university.