A dynamic rheometer (ARES Rheometric Scientific) was used. The experimental setup (Fig. 1), has been described previously
[27,28]. The two parallel plate-holders (the top fixture corresponding to the transducer and the bottom to the motor) of
the rheometer were adapted. The top plate holder was scooped out to permit the insertion of a 45 mirror, which was used to
reflect the UV irradiation onto the sample placed between the disks. The upper consisted of a quartz window with 8 mm