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Bridging the Bio-Electronic Interface with Biofabrication
Published on: June 6, 2012
Chitosan-Based Biopolymer Films for Sustainable Functional Integration
Kiril Dimitrov1,2,3, Imasha Danwatte2, Vesela Stoycheva2
1Fiber Composite Material Technologies Faculty of Engineering and Natural Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany.
Materials (Basel, Switzerland)
|August 13, 2026
Summary
Chitosan films were developed using acetic or lactic acid, showing tunable properties for composite materials. These sustainable films exhibit potential mechanoelectrical sensor functionality, offering new integration possibilities.
Area of Science:
- Materials Science
- Polymer Chemistry
- Sustainable Materials
Background:
- Chitosan is a versatile biopolymer with potential applications in composite materials.
- Understanding solvent effects on chitosan film properties is crucial for functional integration.
Purpose of the Study:
- To identify optimal chitosan formulations for sustainable integration into composite materials.
- To investigate the influence of solvent type and molecular weight on chitosan film characteristics.
- To evaluate the mechanoelectrical sensor potential of chitosan films.
Main Methods:
- Systematic investigation of film formation, rheology, thermal, thermo-optical, chemical structure, and piezoelectric performance.
- Chitosan films were prepared using acetic acid and lactic acid solvents.
- Characterization included rheological, thermal (TGA), spectroscopic (FTIR), and electrical measurements.
Main Results:
- Solvent choice significantly impacted polymer network formation and film properties (e.g., acetic acid yielded stiffer films, lactic acid yielded more flexible films).
- All films exhibited good transparency, homogeneity, and mechanical stability.
- Weak but periodic electrical signals under mechanical excitation demonstrated sensor functionality.
- Chemical structure and intrinsic thermal stability remained largely unaffected by solvent choice.
Conclusions:
- Chitosan films possess tunable structural, thermal, and mechanoelectrical sensor properties.
- Optimized chitosan formulations are suitable for sustainable functional integration into composite materials.
- These findings highlight chitosan's potential as a functional component in advanced material systems.
