Vapor pressure osmometry

Vapor phase osmometry (VPO), also known as vapor-pressure osmometry, is an experimental technique for the determination of a polymer's number average molecular weight, Mn. ^[1]

3 relations: Matrix-assisted laser desorption/ionization, Membrane osmometer, Molar mass distribution.

Matrix-assisted laser desorption/ionization

In mass spectrometry, matrix-assisted laser desorption/ionization (MALDI) is an ionization technique that uses a laser energy absorbing matrix to create ions from large molecules with minimal fragmentation.

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Membrane osmometer

A membrane osmometer is a device used to indirectly measure the number average molecular weight (M_n) of a polymer sample.

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Molar mass distribution

In linear polymers the individual polymer chains rarely have exactly the same degree of polymerization and molar mass, and there is always a distribution around an average value.

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References

[1] https://en.wikipedia.org/wiki/Vapor_pressure_osmometry

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