Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 452-460 |
| Journal | Nordic Pulp and Paper Research Journal |
| Volume | 30 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2015 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- agar
- gelatine
- extensibility
- formability
- spraying
- papermaking
Cite this
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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 journal › Article › Scientific › peer-review
TY - JOUR
T1 - Improving the extensibility of paper: Sequential spray addition of gelatine and agar
AU - Vishtal, Alexey
AU - Khakalo, Alexey
AU - Rojas, Orlando
AU - Retulainen, Elias
PY - 2015
Y1 - 2015
N2 - 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.
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
U2 - 10.3183/NPPRJ-2015-30-03-p452-460
DO - 10.3183/NPPRJ-2015-30-03-p452-460
M3 - Article
VL - 30
SP - 452
EP - 460
JO - Nordic Pulp and Paper Research Journal
JF - Nordic Pulp and Paper Research Journal
SN - 0283-2631
IS - 3
ER -