Dual Thermo- and pH-Responsive Materials Based on Starch

Abstract:

A simple and direct method for preparation of thermo- and pH- responsive materials based on starch is presented. Introduction of 2-hydroxy-3-butoxypropyl as hydrophobic group into starch developed thermo-responsive material, and further introduction of hydrophilic carboxymethyl group could produce dual thermo- and pH-responsive materials. The LCST of these starch-based materials can be easily adjusted at desired temperature between 4.5 and 57.0°C by controlling the molar substitution of 2-hydroxy-3-butoxypropyl and carboxymethyl groups. Furthermore, the LCST of 2-hydroxy-3-butoxypropyl-carboxymethyl starch was also highly sensitive to pH.

• Periodical: Advanced Materials Research (Volume 679)
• Pages: 15-21
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.679.15
• Online since: April 2013
• Authors: Ben Zhi Ju, Shu Fen Zhang, Dong Mao Yan
• Keywords: Hydrophobic Modification, pH-Responsive Materials, Starch, Thermo-Responsive Materials

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