Abstract
Strain behavior of nylon 6 fiber and tristearin as a soil model compound under high hydrostatic pressure up to 250 MPa was studied with a piezometer at 25°C. It was obtained that the initial compressibility, κ 0, was 1.8 × 10-4 MPa-1 for nylon 6, and 3.0 × 10-4 MPa-1 for tristearin. Furthermore, a calculation of compressibility in the amorphous region of nylon 6 was tried. These results suggested that putting the fiber under high hydrostatic pressure was effective for washing. This was supported from a microscopic observation. The experimental results were discussed in terms of the initial compressibility and the density.
