Ei. Nareiko et al., LABILITY OF THE 3-DIMENSIONAL NETWORK OF SALT VULCANIZATES OF RADIATION-GRAFTED COPOLYMERS OF POLYETHYLENE AND ACRYLIC-ACID, High energy chemistry, 30(6), 1996, pp. 385-387
The stability of the three-dimensional network of radiation-grafted fi
lms of polyethylene with acrylic acid in the hydrogen and zinc forms w
as studied by thermomechanical testing at 293-673 K and pressure 0.2-5
.0 MPa. For both zinc and hydrogen forms of the copolymer, the phenome
non of lability of the three-dimensional network was observed, which c
onsisted in its reversible degradation under a pressure above the crit
ical value. The physical nature of the spatial structure sites in thes
e copolymers is discussed.