Question

How can I estimate/measure the effective area of contact between particles in a powder or printed network?

How can I estimate/measure the effective area of contact between particles in a powder or printed network?
Jul 21, 2012

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All Answers (7)

  • M. Melendrez · University of Concepción
    BET why not, but it is possible to get by TEM or not?
    Jul 23, 2012
  • M. Melendrez · University of Concepción
    What is your specific case?
    Jul 23, 2012
  • Panagiotis Klonos · National Technical University of Athens
    If I am not wrong, there are ''gas sorption'' measurements (eg. Ar(g) sorption) (Sbet=.....m^2/g) with which you can estimate it! But it depends on the specific surface (eg. hydroxyls, etc.)
    Jul 23, 2012
  • Panagiotis Klonos · National Technical University of Athens
    Professor V.M. Gun'ko is an expert on the subjest..... have a look....
    http://www.sciencedirect.com/science/article/pii/S0169433211014474
    http://www.sciencedirect.com/science/article/pii/S0008622311008281
    Jul 23, 2012
  • Manjunatha Pattabi · Mangalore university
    There are many reports of area measurements in the literature.
    Jul 24, 2012
  • Marcello Romagnoli · Università degli Studi di Modena e Reggio Emilia
    The problem is not of easy solution!

    My suggestion is the following.

    We can assume that the area of contact is equal to:

    Contact area = Surface area - Area of the pores

    Surface area = Total area of the particles not in contact
    Area of the pores = Area of the pores when the particles are in contact

    The first one can be measured by BET, the second one can be estimate by measure of porosity using the mercury method.

    Both the measures have an interval of error so the results are not perfectly correct.
    Jul 24, 2012

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