Hello,
Does anyone know whether GPPS(produced by bulk polymerization)is a newtonian fluid or not? Till now ,I've thought that all polymers are non-newtonian!but recently I've studied some papers about crystal polystyrene and in all of them being a newtonian fluid is one the assumptions considered for writing the momentum balance.
thanks in advance, Padideh
It most certainly is non-Newtonian.
There may be some good reasons that the papers you are reading are making a simplification to that (a limited range of shear rates for instance, or a first pass effort to see if qualitatively the model is working and then the secondary effects will be added later, or ...). I really can't say until I see the papers myself.
John Aspen Research, -
Opinions expressed herein are my own and may not represent those of my employer.
At lower concentrations polymer tends to be non-newtonian..
Nilesh...
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