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Polyurethane hydrogels sensitive to temperature and pH

Grant number: 17/21231-1
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2017
Effective date (End): January 31, 2021
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal researcher:Maria Isabel Felisberti
Grantee:Leonardo Bueno Bronzeri
Home Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:15/25406-5 - Organizing matter: colloids formed by association of surfactants, polymers and nanoparticles, AP.TEM
Associated scholarship(s):19/11372-2 - 3D Printing of polyurethanes based on PCL and PEtOx, BE.EP.IC

Abstract

This project aims the synthesis of segmented and amphiphilic polyurethanes, potentially biodegradable and biocompatible based on poly(L-lactide) (PLLA) and poly(2-ethyl-2-oxazolyne) (PEtOx). The PLLA is a hydrophobic polymers, while PEtOx is a hydrophilic polymers, which aqueous solutions present LCST phase behavior and properties dependent on the pH and temperature. Depending on the composition, these polyurethanes can swell in water without solubilize, producing hydrogels in which the hydrophobic PLLA segments act as crosslinker. The polyurethanes will be characterized according to composition, thermal and mechanical properties, water swelling capability and its dependence on the pH and temperature. (AU)

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