Preirradiation Graft Polymerization of Styrene in a Poly(tetrafluoroethylene)‎ Film Investigated by Time-Resolved Small-Angle Neutron Scattering

Abstract EN

Preirradiation graft polymerization of styrene in a poly(tetrafluoroethylene) (PTFE) film was examined by time-resolved small-angle neutron scattering (SANS).

A crosslinked PTFE film, thickness of which is about 50 μm, was irradiated by γ-ray and immersed in a mixed solvent of styrene monomer and toluene.

SANS elucidated that graft polymerization proceeds by two reaction processes (I) and (II).

In process (I) at 0

In process (II) at 200

At the end of process (II), 40% of total crystalline PTFE domain is covered by the grafted PS chains.