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The influence of interfacial mechanical behaviour upon deformation and fracture of composite biopolymer gels

  • K.P. Plucknett (a1), V. Normand (a1), S.J. Pomfret (a1), D. Ferdinando (a1), W.J. Frith (a1) and I.T. Norton (a1)...

Abstract

Confocal Laser Scanning Microscopy (CLSM) has been used to follow the dynamic structure evolution of two protein/polysaccharide mixed biopolymer gel systems during large strain deformation. Gelatin/maltodextrin composites exhibited a ‘;pseudo-yielding’ stress-strain response in both tension and compression, when the gelatin-rich phase is continuous, which was attributed to debonding of the particle/matrix interface. This behaviour was significantly less apparent for gelatin/agarose mixed gels. The interfacial fracture energy of the two systems was determined using an elastomer composite debonding model. The gelatin/maltodextrin interfacial fracture energy (∼0.2 J.m-2) was found to be an order of magnitude less than for gelatin/agarose, leading to the observed variation for the two systems.

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1. Morris, V.J., Chem. Ind.-London, 5 159, 1985.
2. Brownsey, G.J., Ellis, H.S., Ridout, M.J. and Ring, S.G., J. Rheol., 31 635, 1987.
3. Gao, Y.C. and Lelievre, J., Polym. Eng. Sci., 34 1369, 1994.
4. Plucknett, K.P., Normand, V., Ferdinando, D. and Pomfret, S.J., Polymer, 41 2319, 2000.
5. Plucknett, K.P. and Normand, V., Polymer, 41 6833, 2000.
6. Bot, A., van Amerongen, I.A., Groot, R.D., Hoekstra, N.L. and Agterof, W.G.M., Polym. Gels Networks, 4 189, 1996.
7. Gent, A.N., J. Mater. Sci., 15 2884, 1980.
8. Creton, C., Kramer, E.J., Hui, C.Y. and Brown, H.R., Macromolecules, 25 3075, 1992.
9. Mangipudi, V.S., Huang, E., Tirrell, M. and Pocius, A.V., Macromol. Symp., 102 131, 1996.
10. Johnson, K.L., Kendall, K. and Roberts, A.D., Proc. R. Soc. Lond. A, 324 301, 1971.
11. Pomfret, S.J., Plucknett, K.P., Frith, W.J., Normand, V. and Norton, I.T., Submitted for publication in MRS Symp. Proc. Vol. 629. Materials Research Society, Pittsburgh (2000).
12. Atkins, A.G. and Mai, Y-W., Elastic and Plastic Fracture: Metals, Polymers, Ceramics, Composites, Biological Materials, Ellis Horwood, Chichester, UK (1985).
13. Plucknett, K.P., Baker, F., Normand, V. and Donald, A.M., manuscript in preparation.

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The influence of interfacial mechanical behaviour upon deformation and fracture of composite biopolymer gels

  • K.P. Plucknett (a1), V. Normand (a1), S.J. Pomfret (a1), D. Ferdinando (a1), W.J. Frith (a1) and I.T. Norton (a1)...

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