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Gelatin plasticized with a biodiesel coproduct stream
- Stevens, Eugene S., Ashby, Richard D., Solaiman, Daniel K.Y.
- Journal of biobased materials and bioenergy 2009 v.3 no.1 pp. 57
- gelatin, films (materials), plasticizers, byproducts, biodiesel, mechanical properties, glycerol, tensile strength, biopolymers, fats and oils industry, refining, cost analysis, thermoplastics, starch
- Cast gelatin films were plasticized with a biodiesel coproduct stream (BCS). Films were well formed and appeared homogeneous by visual inspection. There is no deterioration in mechanical properties when BCS replaces glycerol as plasticizer. A BCS content of 18-34% resulted in elongations of 35-182%, with corresponding tensile strengths of 45-6 MPa and elastic moduli of 1330-38 MPa. Factor analysis indicated that replacing glycerol with BCS increases elongation but has little effect on tensile strength or modulus. The use of BCS as a plasticizer for biopolymers would increase the value of BCS, increase the value of agricultural fats and oils from which biodiesel is synthesized, and increase the feasibility of fuel production in a biorefinery. The use of low-cost BCS may also increase the feasibility of producing thermoplastics from gelatin and from other biopolymers now more expensive than starch.