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Related Experiment Video

Updated: Feb 9, 2026

Analysis and Specification of Starch Granule Size Distributions
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Thermo- and pH-responsive starch derivatives for smart window.

Kaiqiang Zhang1, Yulin Shi1, Liang Wu1

  • 1Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Engineering Research Center of Materials Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China.

Carbohydrate Polymers
|June 13, 2018
PubMed
Summary

A novel thermo and pH dual-responsive starch (TPDS) was synthesized for smart window applications. This smart material exhibits tunable optical properties and controllable lower critical solution temperature (LCST), enabling energy-saving performance.

Keywords:
Controllable LCSTEnergy-savingSmart windowSolar modulationpH/temperature response starch

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Sustainable Energy

Background:

  • Smart materials offer tunable properties for advanced applications.
  • Developing responsive polymers is crucial for energy-efficient technologies.
  • Starch-based materials present a sustainable alternative for functional polymers.

Purpose of the Study:

  • To synthesize a thermo and pH dual-responsive starch (TPDS).
  • To investigate the optical and energy-saving performance of TPDS for smart window applications.
  • To modulate the lower critical solution temperature (LCST) of TPDS via pH adjustment.

Main Methods:

  • Etherification synthesis using butyl glycidyl ether (BGE) and 2-chloro-4, 6-diglycino-[1,3,5]-triazine (CDT).
  • Structural and compositional characterization using FTIR, 1H NMR, and elemental analysis.
  • Optical and energy-saving performance evaluation using UV-vis-NIR spectrophotometry.

Main Results:

  • TPDS was successfully synthesized with tunable LCST ranging from 31°C to 47°C by altering pH.
  • Optimal conditions (10 µg/L TPDS at pH 3) yielded a solar modulating ability (△Tsol) of 40.1% and luminous transmittance (△Tlum) of 47.1%.
  • The material demonstrated excellent optical performance and controllable responsiveness.

Conclusions:

  • TPDS exhibits significant potential for application as an energy-saving smart window material.
  • The dual-responsive nature and tunable optical properties make TPDS a promising candidate for advanced glazing.
  • Further research can explore optimization for enhanced performance and scalability.