The rheological properties of a newly developed biological thermo-hydrogel made from vegetable oil were investigated.  The material named HPSO-HG is a hydrolytic product of polymerized soybean oil (PSO).  HPSO-HG is a thermo-responsive gel, and it exhibited viscoelastic behavior above 2% (wt.%) at room temperature and viscous fluid behavior at 55�C.  The viscoelastic properties of HPSO-HG were strongly dependent on concentration.  The analysis of modulus and concentration dependence and stress relaxation measurement indicated that HPSO-HG was a physical gel meaning the cross-linkers between the molecules were physical junctions.  HPSO-HG hydrogel also showed fast initial partially recovery of its viscoelastic properties after being subject to a mechanical shear disruption.  The function and behavior of the HPSO-HG hydrogel suggest that this biomaterial be a potential candidate for applications in cosmetic products, drug delivery, and wound skin care products.

Rheological properties of a biological thermo-responsive hydrogel produced from soybean oil polymers

244th National Meeting (2012)

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