Aa. Shunkevich et al., THE DISTRIBUTION OF IRRADIATION-GRAFTED ACRYLIC-ACID IN THE CROSS-SECTION OF POLYPROPYLENE FIBERS, International journal of polymeric materials, 28(1-4), 1995, pp. 145-149
The relative efficiency of grafting of acrylic acid (AA) in the surfac
e layer and in the bulk of preirradiated polypropylene fibers was stud
ied by combining the ATR and transmission IR techniques. At graft perc
entage from 41 to 98, the surface layer contains 2-3 times higher conc
entration of the grafted chemical groups than the fiber bulk. At 140%
of AA, the surface of the host polymer becomes screened by the grafted
material.