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Related Experiment Video

Updated: May 10, 2026

Alternating Magnetic Field-Responsive Hybrid Gelatin Microgels for Controlled Drug Release
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Multifunctional Gelatin-Based Smart Films Integrating Thermochromic Encryption, Temperature-Regulated Photothermal

Yuehong Zhang1,2, Chen Yang1, Langlang Dai1

  • 1College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 5, 2026
PubMed
Summary
This summary is machine-generated.

This study developed smart gelatin films with advanced encryption, thermal regulation, and self-healing properties. These multifunctional films offer sustainable solutions for security and temperature management.

Keywords:
information encryptionmultifunctional gelatin filmsphotothermal regulationsustainable smart materialstemperature regulationthermochromic materials

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Smart Materials

Background:

  • Traditional materials lack integrated functionalities for advanced applications.
  • Developing sustainable materials with multiple capabilities is a key research challenge.

Purpose of the Study:

  • To engineer multifunctional gelatin-based smart films.
  • To integrate plasticizing, crosslinking, and thermochromic properties.
  • To achieve enhanced mechanical, optical, and thermal performance with sustainability.

Main Methods:

  • Incorporation of hyperbranched polyglycerol (HBPG) as a plasticizer and dialdehyde β-cyclodextrin (Da-β-CD) as a crosslinker into gelatin.
  • Utilizing thermochromic microcapsules (TCMs) for programmable thermochromism.
  • Structural characterization using FTIR, XPS, and NMR.
  • Evaluation of mechanical, hydrophobic, UV-blocking, and antibacterial properties.
  • Testing of thermochromic encryption, self-adaptive thermal regulation, and self-healing capabilities.

Main Results:

  • Optimized film (GHBT2-CD) showed enhanced tensile strength (28.7 MPa), hydrophobicity (116° water contact angle), UV blocking (>97%), and complete bacterial inhibition (100%).
  • Films demonstrated programmable thermochromism for multilevel information encryption (laser-writing, temperature-gated display, numeral switching) and dual-modal encryption (fluorescence + thermochromism).
  • Films exhibited self-adaptive temperature regulation, enhancing solar heating (+27°C ΔT) and mitigating overheating (<56°C surface temp).
  • Over 91% self-healing efficiency was achieved via stimuli (water, heat, vapor), enabling reprocessing and tunable degradation (complete in 24h at pH 2, 12 days in sludge).

Conclusions:

  • The developed gelatin-based smart films offer a versatile platform with integrated optical security, thermal management, and circular economy principles.
  • These materials pave the way for advanced applications requiring multifunctionality, sustainability, and adaptability.
  • The study highlights the potential of combining polymer chemistry and microencapsulation for next-generation smart materials.