It is simple, accurate, easy to control and relatively cleaner process.
Additives or catalysts are seldom required.
Local heating can be avoided unlike in the chemical method, thus thermally sensitive monomers can be grafted
Absorption of energy by the polymer substrate initiates free-radical process unlike in the chemical method.
Zero activation energy process for initiation, as it is a temperature independent step.
High penetrating ability makes it appropriate for grafting onto solid substrates. Possibility exists to perform mosaic grafting (grafting of different monomers in differentportions on the same substrates) on the solid substrate, as grafting canbe directed to the location of interest [2].