T. Kajitani et al., IN-SITU UNIAXIAL DRAWING APPARATUS FOR POLYMERIC MATERIALS IN COMPRESSED GASES, Review of scientific instruments, 65(11), 1994, pp. 3517-3520
An in situ uniaxial drawing apparatus is described for polymeric mater
ials in compressed gases up to 30 MPa. Polymeric materials plasticized
by sorption of compressed gases can be drawn at a constant rate by us
e of this apparatus. Polystyrene films in CO2 at 10 MPa and 318.15 K w
ere stretched with the draw ratios of 2 to 4 without rupture.