I want to embed some metallic particles in a polymer (like PDMS which is very viscous for my purpose) by coating a glass slide with it, drop-casting the particles on it, and then subjecting it to a magnetic field underneath the slide. These particles respond to the magnet I have when suspended in water but can't move when inside a polymer. I eventually want to image these particles under an SEM once the polymer dries up.
Dear Saumya Gulati, low molecular weight polyethylene glycols (less than 1000g/mol) are either low viscosity liquids or waxy, may be they are suitable for you work. My Regards
Dear Saumya Gulati, low molecular weight polyethylene glycols (less than 1000g/mol) are either low viscosity liquids or waxy, may be they are suitable for you work. My Regards
Any polymer that has a visicosity similar to that of water, the weight of a monomer of that polymer should be almost equal to the weight of a molecule of water. Hence you need polymer comprising about 55 monomers of about 1000g which is equaled to 1 litre of water.
Dear Saumya,
When we consider polymeric fluids, which could be a polymer melt or a polymer solution, the fact that there are very large polymer molecules now impart significantly different properties to the fluid; most polymer melts are therefore non-Newtonian fluids. Actually most polymer melts and solutions are shear thinning. As you shear a polymer along a specific direction, the polymers slip past each other and there is some disentanglement and actually the polymer chains align in the direction of shear. This polymer alignment during shear actually is very important to the mechanical properties of the polymer products being manufactured because it can impart different mechanical properties along different axes of a material. Polythelne glycol can be one of your choices which are almost waxy in nature. You can image under SEM.
Ashish
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