Use of cellulose nanofibrils (CNF) in coating colors

Hille Rautkoski (Corresponding Author), Heikki Pajari, Hanna Koskela, Asko Sneck, Pertti Moilanen

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

Cellulose nanofibrils (CNF) have been tested as a substitute for synthetic latex binders and different thickeners in board coating colors in the laboratory scale. Partial replacement of latex with nanofibrillated cellulose increased viscosity of the coating colors especially at low shear. CNF grades of this study increased the viscosity efficiently even at very low dosage. Water retention results indicate similar effect as with CMC. Tested CNFs induced stronger influence on e.g. water retention and viscosity for calcium carbonate based coating colors than for clay based coating colors. Our results indicate that CNFs might not be suitable to be used as binders because of too strong thickening effect. It was also found that dry surface strength of laboratory coated board was clearly lower when part of latex was replaced with CNFs. However, they could be used as a thickener since even at a very low dosage level they thicken coating colors properly.
Original languageEnglish
Number of pages8
JournalNordic Pulp and Paper Research Journal
Volume30
Issue number3
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

nanofibers
Cellulose
coatings
cellulose
coating
Color
Latex
Coatings
latex
Latexes
color
viscosity
Viscosity
water retention
Binders
thickeners
Water
Calcium Carbonate
Calcium carbonate
calcium carbonate

Keywords

  • cellulose nanofibrils (CNF)
  • coating color
  • binder
  • thickener
  • viscosity

Cite this

@article{c5943779cc1d45649297c0d305aab6fa,
title = "Use of cellulose nanofibrils (CNF) in coating colors",
abstract = "Cellulose nanofibrils (CNF) have been tested as a substitute for synthetic latex binders and different thickeners in board coating colors in the laboratory scale. Partial replacement of latex with nanofibrillated cellulose increased viscosity of the coating colors especially at low shear. CNF grades of this study increased the viscosity efficiently even at very low dosage. Water retention results indicate similar effect as with CMC. Tested CNFs induced stronger influence on e.g. water retention and viscosity for calcium carbonate based coating colors than for clay based coating colors. Our results indicate that CNFs might not be suitable to be used as binders because of too strong thickening effect. It was also found that dry surface strength of laboratory coated board was clearly lower when part of latex was replaced with CNFs. However, they could be used as a thickener since even at a very low dosage level they thicken coating colors properly.",
keywords = "cellulose nanofibrils (CNF), coating color, binder, thickener, viscosity",
author = "Hille Rautkoski and Heikki Pajari and Hanna Koskela and Asko Sneck and Pertti Moilanen",
note = "Project code: 70124",
year = "2015",
doi = "10.3183/NPPRJ-2015-30-03-p511-518",
language = "English",
volume = "30",
journal = "Nordic Pulp and Paper Research Journal",
issn = "0283-2631",
publisher = "De Gruyter",
number = "3",

}

Use of cellulose nanofibrils (CNF) in coating colors. / Rautkoski, Hille (Corresponding Author); Pajari, Heikki; Koskela, Hanna; Sneck, Asko; Moilanen, Pertti.

In: Nordic Pulp and Paper Research Journal, Vol. 30, No. 3, 2015.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Use of cellulose nanofibrils (CNF) in coating colors

AU - Rautkoski, Hille

AU - Pajari, Heikki

AU - Koskela, Hanna

AU - Sneck, Asko

AU - Moilanen, Pertti

N1 - Project code: 70124

PY - 2015

Y1 - 2015

N2 - Cellulose nanofibrils (CNF) have been tested as a substitute for synthetic latex binders and different thickeners in board coating colors in the laboratory scale. Partial replacement of latex with nanofibrillated cellulose increased viscosity of the coating colors especially at low shear. CNF grades of this study increased the viscosity efficiently even at very low dosage. Water retention results indicate similar effect as with CMC. Tested CNFs induced stronger influence on e.g. water retention and viscosity for calcium carbonate based coating colors than for clay based coating colors. Our results indicate that CNFs might not be suitable to be used as binders because of too strong thickening effect. It was also found that dry surface strength of laboratory coated board was clearly lower when part of latex was replaced with CNFs. However, they could be used as a thickener since even at a very low dosage level they thicken coating colors properly.

AB - Cellulose nanofibrils (CNF) have been tested as a substitute for synthetic latex binders and different thickeners in board coating colors in the laboratory scale. Partial replacement of latex with nanofibrillated cellulose increased viscosity of the coating colors especially at low shear. CNF grades of this study increased the viscosity efficiently even at very low dosage. Water retention results indicate similar effect as with CMC. Tested CNFs induced stronger influence on e.g. water retention and viscosity for calcium carbonate based coating colors than for clay based coating colors. Our results indicate that CNFs might not be suitable to be used as binders because of too strong thickening effect. It was also found that dry surface strength of laboratory coated board was clearly lower when part of latex was replaced with CNFs. However, they could be used as a thickener since even at a very low dosage level they thicken coating colors properly.

KW - cellulose nanofibrils (CNF)

KW - coating color

KW - binder

KW - thickener

KW - viscosity

U2 - 10.3183/NPPRJ-2015-30-03-p511-518

DO - 10.3183/NPPRJ-2015-30-03-p511-518

M3 - Article

VL - 30

JO - Nordic Pulp and Paper Research Journal

JF - Nordic Pulp and Paper Research Journal

SN - 0283-2631

IS - 3

ER -