Abstract:
Natural rubber latex (NRL) and n-butyl
acrylate (n-BA) were blended and irradiated at
various absorbed doses by gamma rays from Co-60
source at room temperature. The stabilizing effect
was determined by measuring the pH and viscosity
of NRL with n-BA with the storage time of five
weeks. The cross-link density, swelling ratio of the
radiation vulcanized rubber film were measured.
The cross-link density of the n-BA grafted NRL film
was found increasing and the swelling ratio of that
film decreasing with the increased absorbed dose.
The optimum radiation dose for better cross-linking
of natural rubber latex blended with five parts per
hundred rubber (phr) n-BA was found 15 kGy
absorbed dose. Based on the cross-linking
properties a probable cross-linking reaction
mechanism for the n-BA grafted natural rubber
latex film was developed.
