Editorial Type:
Article Category: Other
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Online Publication Date: 01 Jun 2013

SOYBEAN OIL PLASTICIZERS AS REPLACEMENT OF PETROLEUM OIL IN RUBBER

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Page Range: 233 – 249
DOI: 10.5254/rct.13.87992
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ABSTRACT

Polymerized soybean oils of different molecular weights were used as plasticizers in NR/SBR compositions. The oils of different molecular weights and viscosities were synthesized by cationic polymerization using a proprietary technology. Because vegetable oils have double bonds, they are not only viscosity depressants but also active participants in cross-linking reactions. Properties of elastomers extended with different concentrations of mineral oil or pure soybean oil were compared with elastomers extended by polymerized oils of different molecular weights at the same concentrations. It was found that polymerized soybean oil could be substituted for naphthenic process oil with minimal differences in mechanical and dynamic properties.

Copyright: 2013
<sc>Fig. 1</sc> .
Fig. 1 .

Schematic representation of the cationic polymerization of vegetable oils.

<sc>Fig</sc> . 2.
Fig . 2.

Effect of oil on minimum elastomer viscosity.

<sc>Fig</sc> . 3.
Fig . 3.

Effect of oil on high torque (rheometer).

<sc>Fig</sc> . 4.
Fig . 4.

The effect of oil content on scorch time (Ts2).

<sc>Fig</sc> . 5.
Fig . 5.

The effect of oil content on cure time (Tc95).

<sc>Fig</sc> . 6.
Fig . 6.

Influence of oil content on Shore A hardness of rubbers,

<sc>Fig</sc> . 7.
Fig . 7.

Dependence of tensile strength on oil content in rubber.

<sc>Fig. 8</sc> .
Fig. 8 .

Effect of oil content on elongation of rubber.

<sc>Fig</sc> . 9.
Fig . 9.

Effect of oil content on tear strength.

<sc>Fig</sc> . 10.
Fig . 10.

Dependence of compression set resistance on oil content.

<sc>Fig</sc> . 11.
Fig . 11.

Hardness increase of rubbers after aging.

<sc>Fig</sc> . 12.
Fig . 12.

Loss in tensile strength of oven-aged sample at different oil contents.

<sc>Fig</sc> . 13.
Fig . 13.

Loss in elongation of oven-aged sample at different oil contents.

<sc>Fig. 14</sc> .
Fig. 14 .

Dependence of the dynamic shear modulus G′10/10 on oil content.

<sc>Fig</sc> . 15.
Fig . 15.

Effect of oil content on 25% static shear modulus.

<sc>Fig</sc> . 16.
Fig . 16.

Effect of oil content on tangent δ 10/10.

<sc>Fig</sc> . 17.
Fig . 17.

Dependence of dynamic/static modulus ratio on oil content.

Contributor Notes

* Corresponding author. Ph: 620-235-4928; email: zpetrovi@pittstate.edu
Received: 01 Feb 2012
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