Functional surfaces produced by foam coating

Eija Kenttä, Hanna Koskela, Sara Paunonen, Karita Kinnunen-Raudaskoski, Tuomo Hjelt

Research output: Contribution to journalArticleScientificpeer-review

Abstract

This paper reports experiments on silica coating formulations that are suitable for applying a thin pigment layer with foam coating technique on a paper web. To understand the foaming properties of nano-silica dispersions, the critical micelle concentration (CMC), foam half-life time and foam bubble size stability were determined with three different foaming agents. The results indicate that the bubble stability measurement is a useful characterization method for foam coating purposes. Pilot foam coating trials were done and the effects of the chosen foaming agents were studied on the properties of the nano-silica coated paper. The results show that the surface hydrophilicity of silica coated paper was related not only to silica pigment, but also to the chemical nature of the foaming agent. Standard paper properties were not affected by the thin silica coating.
Original languageEnglish
Pages (from-to)515-521
JournalTappi Journal
Volume15
Issue number8
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Silicon Dioxide
Foams
Silica
Coatings
Blowing agents
Pigments
Coating techniques
Critical micelle concentration
Hydrophilicity
Dispersions
Experiments

Keywords

  • foam coating
  • aqueous foam
  • surface properties
  • silica

Cite this

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title = "Functional surfaces produced by foam coating",
abstract = "This paper reports experiments on silica coating formulations that are suitable for applying a thin pigment layer with foam coating technique on a paper web. To understand the foaming properties of nano-silica dispersions, the critical micelle concentration (CMC), foam half-life time and foam bubble size stability were determined with three different foaming agents. The results indicate that the bubble stability measurement is a useful characterization method for foam coating purposes. Pilot foam coating trials were done and the effects of the chosen foaming agents were studied on the properties of the nano-silica coated paper. The results show that the surface hydrophilicity of silica coated paper was related not only to silica pigment, but also to the chemical nature of the foaming agent. Standard paper properties were not affected by the thin silica coating.",
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Functional surfaces produced by foam coating. / Kenttä, Eija; Koskela, Hanna; Paunonen, Sara; Kinnunen-Raudaskoski, Karita; Hjelt, Tuomo.

In: Tappi Journal, Vol. 15, No. 8, 2016, p. 515-521.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Functional surfaces produced by foam coating

AU - Kenttä, Eija

AU - Koskela, Hanna

AU - Paunonen, Sara

AU - Kinnunen-Raudaskoski, Karita

AU - Hjelt, Tuomo

PY - 2016

Y1 - 2016

N2 - This paper reports experiments on silica coating formulations that are suitable for applying a thin pigment layer with foam coating technique on a paper web. To understand the foaming properties of nano-silica dispersions, the critical micelle concentration (CMC), foam half-life time and foam bubble size stability were determined with three different foaming agents. The results indicate that the bubble stability measurement is a useful characterization method for foam coating purposes. Pilot foam coating trials were done and the effects of the chosen foaming agents were studied on the properties of the nano-silica coated paper. The results show that the surface hydrophilicity of silica coated paper was related not only to silica pigment, but also to the chemical nature of the foaming agent. Standard paper properties were not affected by the thin silica coating.

AB - This paper reports experiments on silica coating formulations that are suitable for applying a thin pigment layer with foam coating technique on a paper web. To understand the foaming properties of nano-silica dispersions, the critical micelle concentration (CMC), foam half-life time and foam bubble size stability were determined with three different foaming agents. The results indicate that the bubble stability measurement is a useful characterization method for foam coating purposes. Pilot foam coating trials were done and the effects of the chosen foaming agents were studied on the properties of the nano-silica coated paper. The results show that the surface hydrophilicity of silica coated paper was related not only to silica pigment, but also to the chemical nature of the foaming agent. Standard paper properties were not affected by the thin silica coating.

KW - foam coating

KW - aqueous foam

KW - surface properties

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