A piston-and-cylinder device for compressibility studies on polymers and other "soft" materials

• We describe an all-steel piston-and-cylinder device for pVT studies on “soft” materials, including liquids, in the range 100-450 K and 0-1.5 GPa. The internal diameter is 15 mm with sample lengths between 10 and 50 mm. Piston displacements are measured to within 0.1 μm using differential transformer transducers. Pressure is calculated from force per unit area and the deformation of pistons and cylinder under pressure are taken into account. The inaccuracy in ΔV/V is less than 0.5%. Experimental data are shown for indium and urea.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

Compressibility measurements

piston-cylinder device

high pressure

volume measurements

polymers

urea

indium

deformation corrections

Mechanical engineering

Maskinteknik

Condensed matter physics

Kondenserade materiens fysik

fysik

Physics

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