Making PVdF-HFP copolymer pellets into a powder
Making PVdF-HFP copolymer pellets into a powder
(OP)
Hello,
I am an intern so I do not know too much about polymer engineering. However I am constructing a gel polymer electrolyte, and in order to do that I need to dissolve some PVdF-HFP into a solution of acetone and ethanol to form a gel like substance. The molecular weight of this polymer is around 400,000 g/mol. My issue is that the PVdF-HFP that I ordered is in pellet form and will not dissolve into the solution. How can I make these pellets into a powder? Any help would be appreciated. Thank you
I am an intern so I do not know too much about polymer engineering. However I am constructing a gel polymer electrolyte, and in order to do that I need to dissolve some PVdF-HFP into a solution of acetone and ethanol to form a gel like substance. The molecular weight of this polymer is around 400,000 g/mol. My issue is that the PVdF-HFP that I ordered is in pellet form and will not dissolve into the solution. How can I make these pellets into a powder? Any help would be appreciated. Thank you





RE: Making PVdF-HFP copolymer pellets into a powder
http://www
Specifically page 4.
Start by dissolving in acetone only, the alcohol is added after solution to form a porous film. They suggest a "lab blender", but any mechanical device that can shred, grind, mutilate, etc. oughta do it. Even elbow grease and a mortar and pestle.
RE: Making PVdF-HFP copolymer pellets into a powder
In extreme cases with very soft tough polymers, liquid nitrogen is used to make them brittle.
Having said that, I agree with bt that it will dissolve better in acetone. The large pellets should dissolve with time and gentle occasional agitation removing the need to pulverise.
Regards
Pat
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RE: Making PVdF-HFP copolymer pellets into a powder