Improving the extensibility of paper: Sequential spray addition of gelatine and agar

Alexey Vishtal, Alexey Khakalo, Orlando Rojas, Elias Retulainen

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

Research has been undertaken to determine whether gelatine and agar can be used together and whether they have an additive action for improved paper extensibility and formability. The mechanical properties of paper were evaluated and adsorption phenomena were investigated, together with the effect of crosslinker addition to polymer solutions on the properties of the treated paper. Polymer solutions were prepared and the crosslinker added approximately 30s before spraying. It has been demonstrated that sequential application was only effective if gelatine was added first followed by agar. While gelatine easily penetrated in the z-direction and adsorbed on cellulose, agar formed a film on the surface. Adsorption studied showed that agar retention was significantly improved upon gelatine pre-adsorption. Analysis of paper treated with gelatine and agar revealed inter-mixing of the polymers, although an agar film was still formed. Crosslinker addition to the solution further improved extensibility and tensile strength of papers. In addition, formability of paper treated with gelatine and agar enabled production of tray-like, three-dimensional shapes with 2-3cm in depth.
Original languageEnglish
Pages (from-to)452-460
JournalNordic Pulp and Paper Research Journal
Volume30
Issue number3
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

extensibility
gelatin
agar
spray
Agar
Polymer solutions
Formability
Adsorption
polymers
adsorption
Spraying
polymer
Cellulose
films (materials)
Tensile strength
Mechanical properties
Polymers
tensile strength
trays
spraying

Keywords

  • agar
  • gelatine
  • extensibility
  • formability
  • spraying
  • papermaking

Cite this

Vishtal, Alexey ; Khakalo, Alexey ; Rojas, Orlando ; Retulainen, Elias. / Improving the extensibility of paper: Sequential spray addition of gelatine and agar. In: Nordic Pulp and Paper Research Journal. 2015 ; Vol. 30, No. 3. pp. 452-460.
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abstract = "Research has been undertaken to determine whether gelatine and agar can be used together and whether they have an additive action for improved paper extensibility and formability. The mechanical properties of paper were evaluated and adsorption phenomena were investigated, together with the effect of crosslinker addition to polymer solutions on the properties of the treated paper. Polymer solutions were prepared and the crosslinker added approximately 30s before spraying. It has been demonstrated that sequential application was only effective if gelatine was added first followed by agar. While gelatine easily penetrated in the z-direction and adsorbed on cellulose, agar formed a film on the surface. Adsorption studied showed that agar retention was significantly improved upon gelatine pre-adsorption. Analysis of paper treated with gelatine and agar revealed inter-mixing of the polymers, although an agar film was still formed. Crosslinker addition to the solution further improved extensibility and tensile strength of papers. In addition, formability of paper treated with gelatine and agar enabled production of tray-like, three-dimensional shapes with 2-3cm in depth.",
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Improving the extensibility of paper: Sequential spray addition of gelatine and agar. / Vishtal, Alexey; Khakalo, Alexey; Rojas, Orlando; Retulainen, Elias.

In: Nordic Pulp and Paper Research Journal, Vol. 30, No. 3, 2015, p. 452-460.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Rojas, Orlando

AU - Retulainen, Elias

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AB - Research has been undertaken to determine whether gelatine and agar can be used together and whether they have an additive action for improved paper extensibility and formability. The mechanical properties of paper were evaluated and adsorption phenomena were investigated, together with the effect of crosslinker addition to polymer solutions on the properties of the treated paper. Polymer solutions were prepared and the crosslinker added approximately 30s before spraying. It has been demonstrated that sequential application was only effective if gelatine was added first followed by agar. While gelatine easily penetrated in the z-direction and adsorbed on cellulose, agar formed a film on the surface. Adsorption studied showed that agar retention was significantly improved upon gelatine pre-adsorption. Analysis of paper treated with gelatine and agar revealed inter-mixing of the polymers, although an agar film was still formed. Crosslinker addition to the solution further improved extensibility and tensile strength of papers. In addition, formability of paper treated with gelatine and agar enabled production of tray-like, three-dimensional shapes with 2-3cm in depth.

KW - agar

KW - gelatine

KW - extensibility

KW - formability

KW - spraying

KW - papermaking

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DO - 10.3183/NPPRJ-2015-30-03-p452-460

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