Well-adhering, easily producible photonic reflective coatings for plastic substrates

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)
48 Downloads (Pure)

Abstract

The development of well-adhering, easily producible photonic reflective coatings is still a challenge. Here, an easy-to-produce, industrial viable process is reported that uses a primer layer of the so-called type II photoinitiator to obtain an excellent adhesion between a plastic substrate and one-dimensional (1D) photonic liquid crystalline coatings. Furthermore, a good alignment of the reactive cholesteric liquid crystal mixture is obtained using a bar-coating process, without alignment layers or surfactants. After photopolymerization, cross-hatch tape tests show a good adhesion of the photonic coating having a reflection band of 50% transmission with almost no scattering. Additionally, we demonstrate the ability to create well-adhering ∼100% reflective coatings by coating double layers and the ability to create single-layered cholesteric broadband reflectors using solely a reactivity gradient created by the primer layer. Our new interfacial method gives new opportunities to use reflecting 1D photonic coatings in industrial processes and applications and allows the bonding of almost any polymer to a plastic substrate.

Original languageEnglish
Pages (from-to)30008-30013
Number of pages6
JournalACS Applied Materials & Interfaces
Volume10
Issue number35
DOIs
Publication statusPublished - 5 Sep 2018

Fingerprint

Reflective coatings
Photonics
Plastics
Coatings
Substrates
Adhesion
Cholesteric liquid crystals
Hatches
Photopolymerization
Surface-Active Agents
Tapes
Polymers
Surface active agents
Scattering
Crystalline materials
Liquids

Keywords

  • adhesion
  • alignment
  • liquid crystals
  • photonic reflective coatings
  • polycarbonate

Cite this

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title = "Well-adhering, easily producible photonic reflective coatings for plastic substrates",
abstract = "The development of well-adhering, easily producible photonic reflective coatings is still a challenge. Here, an easy-to-produce, industrial viable process is reported that uses a primer layer of the so-called type II photoinitiator to obtain an excellent adhesion between a plastic substrate and one-dimensional (1D) photonic liquid crystalline coatings. Furthermore, a good alignment of the reactive cholesteric liquid crystal mixture is obtained using a bar-coating process, without alignment layers or surfactants. After photopolymerization, cross-hatch tape tests show a good adhesion of the photonic coating having a reflection band of 50{\%} transmission with almost no scattering. Additionally, we demonstrate the ability to create well-adhering ∼100{\%} reflective coatings by coating double layers and the ability to create single-layered cholesteric broadband reflectors using solely a reactivity gradient created by the primer layer. Our new interfacial method gives new opportunities to use reflecting 1D photonic coatings in industrial processes and applications and allows the bonding of almost any polymer to a plastic substrate.",
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Well-adhering, easily producible photonic reflective coatings for plastic substrates. / van Heeswijk, Ellen P.A.; Kloos, Joey J.H.; de Heer, Jos ; Hoeks, Theo; Grossiord, Nadia; Schenning, Albertus P.H.J.

In: ACS Applied Materials & Interfaces, Vol. 10, No. 35, 05.09.2018, p. 30008-30013.

Research output: Contribution to journalArticleAcademicpeer-review

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