Karakteristik Film Polietilen Tergrafting Asam Akrilat yang Diperoleh dengan Metoda Radiasi Gamma
ABSTRACT: In this study, high
density polyethylene (PE) film (thickness 80 μm) was modified by grafting of
acrylic acid (AA) onto the film using 15 kGy of g irradiation as initiator,
applied at different exposure times. In addition to irradiation dose, other
variables investigated are concentration of AA, the type of solvent, and
polymerization time carried out at 60 oC. The success of the graft copolymerization
processes was confirmed by analysing the grafted film using FTIR spectroscopy,
which revealed the existence of absorption band at wave number of 1721 cm-1
(assigned to C=O), and that at 3385 cm-1 (assigned to -OH), and the physical
endurance of the sample was evaluated by carrying out tensile strength
measurement. The percent of grafting was determined according to the
gravimetric method. The results indicated that the highest percent of grafting
was obtained by application of 2-hour irradiation time, with monomer
concentration of 30 % in water as a solvent, grafting temperature of 60 oC.
Activity of grafted was evaluated by measurement of the absorption capacity
toward water and Cu2+ ion, and revealed the increase of the absorption capacity
with increased percent of grafting.
Keywords: Graft
copolymerization, acrylic acid, low density polyethylene, gamma irradiation,
water absorbency, absorption of cupric ion
Penulis: John Hendri, Irwan
Ginting Suka, Wasinton Simanjuntak, Annisa Annisa, Gatot
Kode Jurnal: jpkimiadd080102
