The aim of this study is to determine: (a) the graft chain rate
coefficient in the melt and (b) whether the data extrapolated
from the solution polymerization at modest temperature are
fitting in the melt or not. For these purposes, the grafting
acrylic acid (AA) onto LLDPE was chosen as model system.
AA was chosen because of well-document kp data [14–16] and
the relatively high graft degree [17]. All the graft copolymerizations
were performed in the ESR tubes.