pH and thermal responsive hybrids prepared from isophorone diisocyanate-based polyurethane and 2-(diisopropylamino) ethylmethacrylate

FRANCISCO M. PARDINI; OSCAR R. PARDINI; PAULA A. FACCIA; JAVIER I. AMALVY

Simposio; XV Simposio Latinoamericano de Polímeros (SLAP 2016) - XIII Congreso Iberoamericano de Polímeros (CIP 2016); 2016

Stimuli-sensitive polymers are very attractive materials for application in different fields of science and technology.1 These materials have the characteristic of changing its structure and physical properties in response to external stimuli such as pH, ionic strength, temperature, light, or to a specific chemical compound.2 In this work acrylic-polyurethane hybrids containing different amounts of 2-(diisopropylamino)ethyl methacrylate (DPA) monomer (10, 30 and 50 wt. %) were prepared and characterized by thermal analysis and FTIR and UV-visible spectroscopies, while measuring water content and the dynamic swelling degree of water. The influence of DPA on swelling behavior, thermal properties and pH and temperature sensitivity was evaluated.