Abstract
We report on a hybrid microscopy technique that enables us to measure the acoustic properties of a thin polymer film together with an optical microscope image of the corresponding area. Linear low-density polyethylene films are heated to various temperatures and examined by the technique. Density of the film is increased by heating and its sound velocity is decreased compared with a film without heating. Also, spherulites can clearly be seen in the optical microscope image, supporting the thermal shrinkage of the film which can be detected by the present technique.
Original language | English |
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Article number | 024902 |
Journal | Review of Scientific Instruments |
Volume | 85 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2014 Feb |