Braskem S.a.

Universidade Federal Do Rio Grande Do Sul

Universidade Federal Do Rio Grande Do Sul-ufrgs

João Henrique Zimnoch Dos Santos

Marcia Silva Lacerda Miranda

Rodrigo Brambilla

Fernando Silveira

Leonardo Batista Ito

Edwin Moncada

Larissa Brentano Capeletti

Viviane Dalmoro

Edwin Moncada Acevedo

Gilvan Pozzobon Pires

Márcia Pires Fortes Ferreira

Luciane França De Oliveira

Polymeric compositions may include one or more adjunct polymers selected from a group of an ionomer and a polar polymer; and an intelligent additive, wherein when exposed to the external stimuli, the intelligent additive triggers a color change in the polymeric composition. Polymer compositions may include a nonpolar matrix polymer; one or more adjuncts selected from the group of an ionomer, a polar polymer, a metal salt, or combinations thereof. Polymer compositions may also include an intelligent additive, wherein when exposed to the external stimuli, the intelligent additive triggers a color change in the polymeric composition, wherein after at least 17 hours of exposure to the external stimuli, the polymer composition exhibits a &#x394;E of at least 8 or more, maintaining the &#x394;E of at least 8 or more for at least 5 days after the exposure to external stimulus is ceased.

Intelligent polymer compositions

The present invention relates to chemical sensors with hybrid characteristics, which are thermo-mechanically stable and able to respond to changes in the environment, particularly in the presence of amine and/or amide and/or oxide-reducing compounds, and/or vapor thereof by color change, as well as its incorporation into sensitive polymeric composition.

Hybrid chemical sensor, and, sensitive polymeric composition

Growing community of inventors

Porto Alegre, Brazil

João Henrique Zimnoch Dos Santos