Abstract
Iron salts can change the structure and viscoelastic properties of the gelatin biopolymer and drive the formation of foams.
Highlights
Materials for energy applications require increasing levels of chemical and structural complexity
Given that the samples were prepared to have a constant ratio of metal (0.005 moles) to gelatin (1 g), it is possible that the different levels of nitrate have an in uence
Given that the formation of foams relies both on the production of gas bubbles and the stabilisation of these bubbles, we propose that the main role of the metal in these systems is interaction with the gelatin polymer to change the solution properties, offering stability to the resulting foam
Summary
Materials for energy applications require increasing levels of chemical and structural complexity. Given that gelatin with iron nitrate produces a visual change in viscosity, the rheological properties of this system was probed using a cone and plate geometry.[14] The samples were prepared at the maximum possible concentration in order to probe the system as close as possible to the resin-foam transition point (details in ESI†).
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