Abstract: The research about
the influence of adding initiator dicumyl peroxide and divinylbenzene as
crosslink agent on the compatibility blending rasio polyethylene and natural
rubber SIR 3L has been carried out. Blending is done in two steps, the first
step was without the addition of divinylbenzene, polyethylene/natural rubber
SIR 3L/dicumyl peroxide (w/w) 50 g : 50 g : 1phr, 2phr, and 3phr. The second
step was by the addition of divinylbenzene, polyethylene/natural rubber SIR 3L/divinylbenzene/dicumyl
peroxide (w/w) 50 g : 50 g : 1phr :1phr, 2phr : 1phr, 3phr : 1phr, 1phr : 2 phr, 2phr : 2phr, 3phr : 2phr, 1phr : 3phr,
2phr : 3phr, dan 3phr : 3phr. To determine the quality of yielded composites,
the tensile test analysis was done, obtained the increasing concentration
without divinylbenzene, maximum at variation of concentration
polyethylene/natural rubber SIR 3L/dicumyl peroxide is 2 phr is tensile
strength and elasticity was 2.20 kgf/mm2 and 12.29%, and by addition of divinylbenzene
obtained the increasing maximum at variation of concentration
polyethylene/natural rubber SIR 3L/divinylbenzene/dicumyl peroxide 3phr : 2phr,
the tensile strength and elasticity was 3.31 kgf/mm2 and 28.99%. From the SEM
analysis result was obtained that the addition of divinylbenzene could improved
the composite’s surface so that become more flatten and homogeneous. From the functional
group analysis FT-IR showed that the mixture of divinylbenzene and
polyethylene/natural rubber SIR 3L/dicumyl peroxide were just physical
interaction.
Keyword: peroxside, Divinyl
benzene, Poly Ethylene, Natural rubber (SIR 3 L) Blending
Penulis: Amir Hamzah Siregar
Kode Jurnal: jpkimiadd100070
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