Polímeros inteligentes contra las falsificaciones

  1. Álvaro Miguel Ortega 1
  2. Saúl Vallejos 1
  3. Miriam Trigo López 1
  4. Ana Arnaiz 1
  5. Roberto Aguado 2
  6. Artur J.M. Valente 2
  7. José Miguel García 1
  1. 1 Universidad de Burgos
    info

    Universidad de Burgos

    Burgos, España

    ROR https://ror.org/049da5t36

  2. 2 Universidade de Coimbra
    info

    Universidade de Coimbra

    Coímbra, Portugal

    ROR https://ror.org/04z8k9a98

Journal:
Revista de plásticos modernos: Ciencia y tecnología de polímeros

ISSN: 0034-8708

Year of publication: 2022

Issue Title: Materias Primas, Transformación y Procesado

Volume: 124

Issue: 780

Type: Article

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Abstract

In this work we described the preparation of smart anticounterfeit labels. They are obtained by dipping cellulose paper strips in chromogenic polymer dissolutions. Depending on the selected polymer, up to a maximum of 12 possibilities, the labels can turn into different colors after being soaked with an aqueous solution of NaNO2 and HCl and a NaOH revealing solution. The labels developed in this work are suitable for domestic use because they can be interpreted with ambient light, conversely to the widely used anticounterfeit luminescent labels, that require a UV light source to decrypt. The revealing product soaked by the client over the labels triggers the formation reaction of a colored azo dye by interaction of an amino benzene derivative monomer with the active position in the aromatic ring of other comonomer. When a sender shares a sequence of different colors with the addressee by a private channel, he can collate if the color of the revealed labels received is the same and thus confirm the authenticity of the product.

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