International Scholarly Research Notices / 2013 / Article / Tab 3

Research Article

Biodiesel as a Plasticizer of a SBR-Based Tire Tread Formulation

Table 3

Difference between the solubility parameter of the plasticizer and the solubility parameter of the rubber.

in
MPa1/2EPDM and IIRNRBRSBR-20SBR-40PSNITRILE-20NITRILE-30

Paraffinic oil (this work) −1.9 2.3 −2.9 -3.2−3.5−4.5−5.2−6.4
Naphthenic oil (this work) −1.4 −1.7 −2.0 −3.0−3.7−4.9
Aromatic oil (this work) 1.2 1.4 −2.1 −3.3
Diisooctyl adipate [2] 1.7 1.3 −1.6 −2.8
Dioctyl sebacate [2] 1.7 1.3 −1.6 −2.8
Diethylhexyl phthalate [2] 2.1 1.7 1.1 −1.2 −2.4
Dioctyl phthalate [6] 2.2 1.8 1.2 −1.1 −2.3
Diethylhexyl phthalate [6] 2.9 2.5 1.9 1.6 1.3 −1.6
Dibutyl phthalate [2] 3.12.7 1.8 1.5 −1.4

Olive oil [3] −1.8 −2.5 −3.7
Soybean oil [3] −1.2 −1.5 −2.5 −3.2−4.4
Sunflower oil [3] −1.0 −2.0 −2.7 −3.9
Peanut oil [3] −1.0 −1.3 −1.6 −2.6 −3.3−4.5
Lineseed oil [3] −1.0 −1.3 −2.3 −3.0−4.2
Brassica oil [3] −1.8 −2.5 −3.7
Castor oil [3]* 2.2 1.8 1.1 2.3

Methyl erucate (this work) −1.1 −2.1 −2.8 −4.0
Methyl oleate (this work) −1.0 2.0 −2.7 −3.9
Methyl linoleate (this work) −1.1 −2.1 −2.8 −4.0
Methyl stearate (this work) −1.0 2.0 −2.7 −3.9
Methyl palmitate (this work) −1.1 −2.1 −2.8 −4.0
Biodiesel (this work) −1.1 −2.1 −2.8 −4.0
Biodiesel [7] 1.5 1.1 1.1 1.8 −3.0

Hansen reports a value of 20.4 MPa1/2.
EPDM: ethylene/propylene/diene rubber; IIR: butyl rubber; NR: natural rubber (polyisoprene); BR: polybutadiene; SBR-20: styrene/butadiene copolymer 20% styrene; SBR-40: styrene/butadiene copolymer 40% styrene; PS: polystyrene; NITRILE-20: acrylonitrile/butadiene copolymer 20% acrylonitrile; NITRILE-30: acrylonitrile/butadiene copolymer 30% acrylonitrile.
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