Thermoresponsive Gelatin Nanogels
Sahil Sandesh Gandhi1, Huan Yan1, Chanjoong Kim1
1Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, P.O. Box 5190, Kent, Ohio 44242, United States.
ACS Macro Letters
|May 25, 2022
Summary
We developed a new gelatin nanogel that shrinks dramatically above 32°C. This natural polymer material offers potential for advanced stimuli-responsive biomedical applications.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Gelatin, a natural polymer, is widely used in biomedical applications.
- Developing stimuli-responsive materials is crucial for advanced drug delivery and tissue engineering.
- Existing materials often lack tunable and efficient responses to physiological triggers.
Purpose of the Study:
- To create a novel, tunable thermoresponsive gelatin nanogel.
- To investigate the mechanism of volume transition in gelatin nanogels.
- To explore the potential of these nanogels in biomedical fields.
Main Methods:
- Synthesis of thermoresponsive gelatin nanogels.
- Dynamic Light Scattering (DLS) for size analysis.
- Transmission Electron Microscopy (TEM) for structural visualization.
- Polarimetry to study conformational changes.
Main Results:
- A tunable volume transition was observed at approximately 32°C.
- A significant volume reduction (over 30×) was induced by thermal stimulus.
- The transition is attributed to the helix-to-random coil transition of gelatin chains.
- Key factors influencing thermoresponsive behavior were identified.
Conclusions:
- The developed gelatin nanogel exhibits significant thermoresponsive behavior.
- This material demonstrates potential for creating advanced stimuli-responsive systems.
- Natural polymer-based nanogels offer a promising platform for biomedical innovations.
