The self-organization of starch on paper

Mika Anttila (Corresponding Author), Kirsi Kataja, Laura Kela, Sari Hyvärinen, Henna Lampinen, M. Toivakka

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

The objective of this study was to clarify how modified starch polymers self-organize on the surface of paper. Understanding this phenomenon could enable tailoring of the surface of paper with small amounts of polymer, thereby controlling and adjusting its surface chemistry and absorption properties.
Native potato starch without depolymerization was modified with either hydrophilic or hydrophobic side chains, which were either neutral or anionic. These modified starches were applied to the paper surface by means of spray sizing. Starch penetration into the paper structure was reduced due to the high molecular weight of the native potato starch (Mw ≈ 2*106). Repulsion forces between the side chains of the anionically modified starch affected polymer elongation, paper surface oriented conformation, and paper coverage. The anionic side chains of the starch also experience repulsion from the anionic carboxylate ions of the base paper, which causes the side chains to orient themselves away from the paper. This selforganization phenomenon is most pronounced with a hydrophilic base paper with a high anionic charge. Modifying the chemical properties of the side chains makes it possible to control the surface energy of the base paper using an extremely low amount of polymer.
Original languageEnglish
Pages (from-to)621-630
Number of pages9
JournalNordic Pulp and Paper Research Journal
Volume27
Issue number3
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Fingerprint

self organization
Starch
starch
modified starch
polymers
Polymers
polymer
potato starch
potato
depolymerization
Depolymerization
surface energy
Surface chemistry
Interfacial energy
chemistry
physicochemical properties
Chemical properties
spray
Conformations
Elongation

Keywords

  • Hydrophilic
  • hydrophopic
  • modified starch
  • molecular modeling
  • self-organization
  • spraying
  • surface energy
  • woodcontaining base paper

Cite this

Anttila, Mika ; Kataja, Kirsi ; Kela, Laura ; Hyvärinen, Sari ; Lampinen, Henna ; Toivakka, M. / The self-organization of starch on paper. In: Nordic Pulp and Paper Research Journal. 2012 ; Vol. 27, No. 3. pp. 621-630.
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abstract = "The objective of this study was to clarify how modified starch polymers self-organize on the surface of paper. Understanding this phenomenon could enable tailoring of the surface of paper with small amounts of polymer, thereby controlling and adjusting its surface chemistry and absorption properties. Native potato starch without depolymerization was modified with either hydrophilic or hydrophobic side chains, which were either neutral or anionic. These modified starches were applied to the paper surface by means of spray sizing. Starch penetration into the paper structure was reduced due to the high molecular weight of the native potato starch (Mw ≈ 2*106). Repulsion forces between the side chains of the anionically modified starch affected polymer elongation, paper surface oriented conformation, and paper coverage. The anionic side chains of the starch also experience repulsion from the anionic carboxylate ions of the base paper, which causes the side chains to orient themselves away from the paper. This selforganization phenomenon is most pronounced with a hydrophilic base paper with a high anionic charge. Modifying the chemical properties of the side chains makes it possible to control the surface energy of the base paper using an extremely low amount of polymer.",
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author = "Mika Anttila and Kirsi Kataja and Laura Kela and Sari Hyv{\"a}rinen and Henna Lampinen and M. Toivakka",
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The self-organization of starch on paper. / Anttila, Mika (Corresponding Author); Kataja, Kirsi; Kela, Laura; Hyvärinen, Sari; Lampinen, Henna; Toivakka, M.

In: Nordic Pulp and Paper Research Journal, Vol. 27, No. 3, 2012, p. 621-630.

Research output: Contribution to journalArticleScientificpeer-review

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KW - self-organization

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