Abstract
We present a novel tunable thermoresponsive gelatin nanogel that shows a volume transition at ∼32 °C. A thermally induced volume reduction of more than 30× is observed due to the helix to random coil transition of gelatin chains confined in the nanogels. The physical process and key factors influencing thermoresponsive properties are investigated using dynamic light scattering (DLS), transmission electron microscopy (TEM), and polarimetry. The thermoresponsive properties of this nanogel can be exploited in the development of new types of stimuli-responsive, biomedically relevant materials based on natural polymers.
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