THE ENTANGLEMENT QUIZ online Test

Is the concept of entanglement of polymer chains well described, in your opinion, by:


Are ENTANGLEMENTS stable in time and what would cause them to become instable?


what is the maximum disentanglement ratio one can achieve if a polymer melt can be disentangled?


Is Me changing for a melt which "shear-thins"?


How long does it take for a melt to fully disentangle?


when a melt is disentangled by mechanical means, is Me changing evenly across the thickness of the gap?


Can one compare the behavior of unentangled melt and disentangled melt?


the viscosity of a disentangled polymer melt is:


For a disentangled melt, the degree of swell is:


When a polymer melt is disentangled (even partially), how long does it take to "re-entangle"?


Can only BRANCHED polymers be disentangled mechanically?


The kinetics of re-entanglement of an unentangled polymer varies with Molecular weight like:


Is it possible to modify the kinetics of re-entanglement of a disentangled polymer?


Does a disentangled melt (driven by thermodynamic reasons) try to recover its EQUILIBRIUM ENTANGLED STATE when it is annealed?


Can we produce polymer melts which exceed their equilibrium entanglement state (the reverse of disentanglement)?


Does a melt with greater than equilibrium entanglement density have GREATER modulus and Viscosity than an equilibrium melt?


Can one modify the Equilibrium Entanglement state of a polymer melt?


IS ORIENTATION OF A POLYMER MELT THE RESULT OF DISENTANGLEMENT/RE-ENTANGLEMENT RE-ORGANIZATION?


How long can ORIENTATION survive above Tg for an amorphous linear polymer melt?


If the state of non-equilibrium of the entanglement network controls and modulates the molecular motion response of a melt, what are the chances that the reptation model remains the dominant explanation for the description of the properties of melts (viscoelasticity, molecular weight dependence, etc)?


When a melt is "disentangled", can it be frozen into pellets that will be showing, on reheating, the viscosity decrease benefits of the melt?


Is the Objective of the New School of Plolymer Physics to present a new understanding of entanglements
























Description:

If you know the answer to all the questions in this test, you qualify to become the teacher of this class.
If you feel that the concept of entanglement of polymer chains is so well understood by the established models that there is no need to question it, you should this class.
If you scored very poorly or did not know how to answer many of the quiz questions, hold on to the class, your questions will benefit us all.

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