Publication detail

Insight into colour change of reversible thermochromic systems and their incorporation into textile coating

ŠTAFFOVÁ, M. KUČERA, F. TOCHÁČEK, J. DZIK, P. ONDREÁŠ, F. JANČÁŘ, J.

Original Title

Insight into colour change of reversible thermochromic systems and their incorporation into textile coating

English Title

Insight into colour change of reversible thermochromic systems and their incorporation into textile coating

Type

journal article in Web of Science

Language

en

Original Abstract

The leuco dye TPs were successfully dispersed into one-component heat crosslinkable aliphatic isocyanate lead-ing to the very uniform color of the coating depositedonto polyester fabric with floating knife technology.The colourization and decolourization effect of ther-mochromic coating was investigated and the resultswere compared to thermal properties of the pigment.The photostability of the thermochromic coating wasfound not to be sufficient enough to be used outdoors.Therefore, an attempt to improve the color stabilitytoward the sunlight was made, by incorporating UV andHALS stabilizers. It is concluded that the UV absorber isa useful lightfastness enhancer for improving the perfor-mance of melamine microencapsulated leuco dye-basedTPs, since it protects the chromophore by absorbing UVlight and needs no direct access to colorant or interme-diate species produced during chromophore degradationunlike HALS, which showed no improvement. Furtherimprovement in photostability of the thermochromiccoating was achieved by increasing the number of layerswith UVA stabilizers over the original thermochromiclayer.

English abstract

The leuco dye TPs were successfully dispersed into one-component heat crosslinkable aliphatic isocyanate lead-ing to the very uniform color of the coating depositedonto polyester fabric with floating knife technology.The colourization and decolourization effect of ther-mochromic coating was investigated and the resultswere compared to thermal properties of the pigment.The photostability of the thermochromic coating wasfound not to be sufficient enough to be used outdoors.Therefore, an attempt to improve the color stabilitytoward the sunlight was made, by incorporating UV andHALS stabilizers. It is concluded that the UV absorber isa useful lightfastness enhancer for improving the perfor-mance of melamine microencapsulated leuco dye-basedTPs, since it protects the chromophore by absorbing UVlight and needs no direct access to colorant or interme-diate species produced during chromophore degradationunlike HALS, which showed no improvement. Furtherimprovement in photostability of the thermochromiccoating was achieved by increasing the number of layerswith UVA stabilizers over the original thermochromiclayer.

Keywords

coatings, degradation, dyes/pigments, polyurethane, textiles

Released

20.01.2021

Publisher

WILEY

Location

111 RIVER ST, HOBOKEN 07030-5774, NJ USA

ISBN

1097-4628

Periodical

Journal of Applied Polymer Science

Year of study

138

Number

4

State

US

Pages from

1

Pages to

11

Pages count

11

URL

Documents

BibTex


@article{BUT164720,
  author="Martina {Štaffová} and František {Kučera} and Jiří {Tocháček} and Petr {Dzik} and František {Ondreáš} and Josef {Jančář}",
  title="Insight into colour change of reversible thermochromic systems and their incorporation into textile coating",
  annote="The leuco dye TPs were successfully dispersed into one-component heat crosslinkable aliphatic isocyanate lead-ing to the very uniform color of the coating depositedonto polyester fabric with floating knife technology.The colourization and decolourization effect of ther-mochromic coating was investigated and the resultswere compared to thermal properties of the pigment.The photostability of the thermochromic coating wasfound not to be sufficient enough to be used outdoors.Therefore, an attempt to improve the color stabilitytoward the sunlight was made, by incorporating UV andHALS stabilizers. It is concluded that the UV absorber isa useful lightfastness enhancer for improving the perfor-mance of melamine microencapsulated leuco dye-basedTPs, since it protects the chromophore by absorbing UVlight and needs no direct access to colorant or interme-diate species produced during chromophore degradationunlike HALS, which showed no improvement. Furtherimprovement in photostability of the thermochromiccoating was achieved by increasing the number of layerswith UVA stabilizers over the original thermochromiclayer.",
  address="WILEY",
  chapter="164720",
  doi="10.1002/app.49724",
  howpublished="online",
  institution="WILEY",
  number="4",
  volume="138",
  year="2021",
  month="january",
  pages="1--11",
  publisher="WILEY",
  type="journal article in Web of Science"
}