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Synthesis of Stimuli-responsive Nanogels using Aqueous One-step Crosslinking and Co-nanopolymerization
Published on: January 24, 2025
Isocyanate crosslinked reactive starch nanoparticles for thermo-responsive conducting applications
Mayur Valodkar1, Sonal Thakore
1Department of Chemistry, Faculty of Science, The M. S. University of Baroda, Vadodara 390 002, India.
Carbohydrate Research
|September 21, 2010
Summary
Modified starch nanoparticles (SNPs) were synthesized to create hydrophobic materials. These nanoparticles can be used to develop nanocomposite films with thermo-responsive electrical conductivity.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Starch nanoparticles (SNPs) are typically hydrophilic.
- Hydrophobic modifications are needed to expand SNP applications.
- Nanocomposite films require stable, functional precursors.
Purpose of the Study:
- To synthesize hydrophobic starch nanoparticles (SNPs) via modification with 1,4-hexamethylene diisocyanate (HMDI).
- To characterize the structural and morphological changes of modified SNPs.
- To develop and evaluate nanocomposite films derived from these hydrophobic SNPs.
Main Methods:
- Synthesis of HMDI-modified SNPs at ambient temperatures.
- Characterization using Transmission Electron Microscopy (TEM), FT-IR, and X-ray Diffraction (XRD).
- Fabrication and testing of polyether-polyurethane nanocomposite films crosslinked with modified SNPs.
Main Results:
- HMDI modification altered SNP morphology from platelet-like to pseudospherical, with size dependent on diisocyanate concentration.
- Hydrophobicity significantly increased in crosslinked SNPs compared to unmodified ones.
- The crystalline structure of starch was preserved after modification.
- The resulting nanocomposite film demonstrated thermo-responsive electrical conductivity.
Conclusions:
- HMDI-modified SNPs are effective hydrophobic precursors for advanced materials.
- The developed nanocomposite films exhibit tunable properties, including thermo-responsive electrical conductivity.
- This work expands the utility of starch-based nanomaterials in functional applications.
