Cleaning items with isopropanol versus acetone?
When I clean all components with acetone the devices do not stick to the polymer. When I clean everything with isopropanol they stick very well and I succeed in transferring the devices.
What does isopropanol do to the surfaces that acetone doesnt that makes the transfer possible?
Answer:
I would say since you are using the lactide/glycolide polymer the IPA is helping by hydrogen-bonding with it, where as the acetone can't.
Isopropanol is probably leaving more crud on the surface than acetone. It could also form a more persistent monolayer if it adheres to the surface itself.
Lactide/glycolide surfaces on polymers have a moderately polar surface. When you clean the surface with the isopropanol which is much more polar than acetone, it hydrogen bonds and allows it to stick better.
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