Effect of internal and surface sizing on the wetting and absorption properties of paper

Hedieh Modaressi, Gil Garnier

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Effect of internal and surface sizing on the wetting and absorption behavior of a water droplet on paper was studied. Two individual internally sized papers were selected (AKD, ASA) and surface sized using different concentrations of a mixture of a sizing polymer (Styrene Maleic Anhydride) and starch. Measuring the apparent contact angle of water droplets on papers revealed that the wetting characteristics of the surface varied as a function of the concentration of the sizing polymer (SMA) on the surface. Wetting and absorption were found to be two sequential phenomena. The equilibrium contact angle (e*) increased with the SMA concentration. Highly hydrophobic paper surfaces result from the combination of internal and surface sizing (e*>110°). The delay before bulk absorption was also a function of SMA concentration on the surface. Delay was related to SMA dissolution into the water droplet, which produced hydrophilic channels locally (e*<90°). Unsteady stick and jump movement of the contact line during wetting was significant and decreased upon calendering.

Original languageEnglish
JournalAnnual Meeting - Technical Section, Canadian Pulp and Paper Association, Preprints
VolumeB
Publication statusPublished - 1 Dec 2001
Event87th Annual Meeting - Montreal, Que., Canada
Duration: 31 Jan 2001 → …

Keywords

  • Absorption
  • AKD
  • ASA
  • Internal sizing
  • Paper
  • SMA
  • Surface sizing
  • Wetting

Cite this

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abstract = "Effect of internal and surface sizing on the wetting and absorption behavior of a water droplet on paper was studied. Two individual internally sized papers were selected (AKD, ASA) and surface sized using different concentrations of a mixture of a sizing polymer (Styrene Maleic Anhydride) and starch. Measuring the apparent contact angle of water droplets on papers revealed that the wetting characteristics of the surface varied as a function of the concentration of the sizing polymer (SMA) on the surface. Wetting and absorption were found to be two sequential phenomena. The equilibrium contact angle (e*) increased with the SMA concentration. Highly hydrophobic paper surfaces result from the combination of internal and surface sizing (e*>110°). The delay before bulk absorption was also a function of SMA concentration on the surface. Delay was related to SMA dissolution into the water droplet, which produced hydrophilic channels locally (e*<90°). Unsteady stick and jump movement of the contact line during wetting was significant and decreased upon calendering.",
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Effect of internal and surface sizing on the wetting and absorption properties of paper. / Modaressi, Hedieh; Garnier, Gil.

In: Annual Meeting - Technical Section, Canadian Pulp and Paper Association, Preprints, Vol. B, 01.12.2001.

Research output: Contribution to journalConference articleResearchpeer-review

TY - JOUR

T1 - Effect of internal and surface sizing on the wetting and absorption properties of paper

AU - Modaressi, Hedieh

AU - Garnier, Gil

PY - 2001/12/1

Y1 - 2001/12/1

N2 - Effect of internal and surface sizing on the wetting and absorption behavior of a water droplet on paper was studied. Two individual internally sized papers were selected (AKD, ASA) and surface sized using different concentrations of a mixture of a sizing polymer (Styrene Maleic Anhydride) and starch. Measuring the apparent contact angle of water droplets on papers revealed that the wetting characteristics of the surface varied as a function of the concentration of the sizing polymer (SMA) on the surface. Wetting and absorption were found to be two sequential phenomena. The equilibrium contact angle (e*) increased with the SMA concentration. Highly hydrophobic paper surfaces result from the combination of internal and surface sizing (e*>110°). The delay before bulk absorption was also a function of SMA concentration on the surface. Delay was related to SMA dissolution into the water droplet, which produced hydrophilic channels locally (e*<90°). Unsteady stick and jump movement of the contact line during wetting was significant and decreased upon calendering.

AB - Effect of internal and surface sizing on the wetting and absorption behavior of a water droplet on paper was studied. Two individual internally sized papers were selected (AKD, ASA) and surface sized using different concentrations of a mixture of a sizing polymer (Styrene Maleic Anhydride) and starch. Measuring the apparent contact angle of water droplets on papers revealed that the wetting characteristics of the surface varied as a function of the concentration of the sizing polymer (SMA) on the surface. Wetting and absorption were found to be two sequential phenomena. The equilibrium contact angle (e*) increased with the SMA concentration. Highly hydrophobic paper surfaces result from the combination of internal and surface sizing (e*>110°). The delay before bulk absorption was also a function of SMA concentration on the surface. Delay was related to SMA dissolution into the water droplet, which produced hydrophilic channels locally (e*<90°). Unsteady stick and jump movement of the contact line during wetting was significant and decreased upon calendering.

KW - Absorption

KW - AKD

KW - ASA

KW - Internal sizing

KW - Paper

KW - SMA

KW - Surface sizing

KW - Wetting

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M3 - Conference article

VL - B

JO - Annual Meeting - Technical Section, Canadian Pulp and Paper Association, Preprints

JF - Annual Meeting - Technical Section, Canadian Pulp and Paper Association, Preprints

SN - 0316-6732

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