Tear and tensile strength development of PGW and CTMP pulps mixed with PLA or viscose fibres

Jaakko Asikainen (Corresponding Author), Antti Korpela

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The objective was to evaluate the effects on paper properties when replacing a minor share of wood fibre by synthetic fibre. The aim was to increase tear strength and stretch while minimizing the loss of tensile strength in paper consisting of mechanical pulp. Tested synthetic fibres included PLA and viscose fibres mixed with mechanical or chemi-mechanical pulp.Even at relatively low proportions, the synthetic fibres contributed to a significant increase of tear strength in the wood fibre based papers. With the highest tested proportion (20%) the increase of tear index in PGW based stock was 243% with PLA and 177% with viscose fibre. However, a simultaneous decrease in tensile strength and tensile stiffness was observed. The stretch at break remained unchanged. Thickness reduction of the synthetic fibres resulted in an increase of tear strength. The effect is due to the high fibre length of synthetic fibres, producing mechanically well entangled networks, coupled with the high enough strength of the synthetic fibres.
Original languageEnglish
Pages (from-to)304-308
Number of pages5
JournalNordic Pulp and Paper Research Journal
Volume29
Issue number2
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

viscose
synthetic fibers
Synthetic fibers
tensile strength
Pulp
pulp
Tensile strength
Fibers
mechanical pulp
Mechanical pulp
wood fibers
Wood
paper pulp
rayon
fibre
Stiffness
stiffness

Keywords

  • tear strength
  • tensile strength
  • PGW
  • CTMP
  • synthetic fibres
  • mechanical pulp
  • PLA viscose

Cite this

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title = "Tear and tensile strength development of PGW and CTMP pulps mixed with PLA or viscose fibres",
abstract = "The objective was to evaluate the effects on paper properties when replacing a minor share of wood fibre by synthetic fibre. The aim was to increase tear strength and stretch while minimizing the loss of tensile strength in paper consisting of mechanical pulp. Tested synthetic fibres included PLA and viscose fibres mixed with mechanical or chemi-mechanical pulp.Even at relatively low proportions, the synthetic fibres contributed to a significant increase of tear strength in the wood fibre based papers. With the highest tested proportion (20{\%}) the increase of tear index in PGW based stock was 243{\%} with PLA and 177{\%} with viscose fibre. However, a simultaneous decrease in tensile strength and tensile stiffness was observed. The stretch at break remained unchanged. Thickness reduction of the synthetic fibres resulted in an increase of tear strength. The effect is due to the high fibre length of synthetic fibres, producing mechanically well entangled networks, coupled with the high enough strength of the synthetic fibres.",
keywords = "tear strength, tensile strength, PGW, CTMP, synthetic fibres, mechanical pulp, PLA viscose",
author = "Jaakko Asikainen and Antti Korpela",
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journal = "Nordic Pulp and Paper Research Journal",
issn = "0283-2631",
publisher = "De Gruyter",
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}

Tear and tensile strength development of PGW and CTMP pulps mixed with PLA or viscose fibres. / Asikainen, Jaakko (Corresponding Author); Korpela, Antti.

In: Nordic Pulp and Paper Research Journal, Vol. 29, No. 2, 2014, p. 304-308.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Tear and tensile strength development of PGW and CTMP pulps mixed with PLA or viscose fibres

AU - Asikainen, Jaakko

AU - Korpela, Antti

PY - 2014

Y1 - 2014

N2 - The objective was to evaluate the effects on paper properties when replacing a minor share of wood fibre by synthetic fibre. The aim was to increase tear strength and stretch while minimizing the loss of tensile strength in paper consisting of mechanical pulp. Tested synthetic fibres included PLA and viscose fibres mixed with mechanical or chemi-mechanical pulp.Even at relatively low proportions, the synthetic fibres contributed to a significant increase of tear strength in the wood fibre based papers. With the highest tested proportion (20%) the increase of tear index in PGW based stock was 243% with PLA and 177% with viscose fibre. However, a simultaneous decrease in tensile strength and tensile stiffness was observed. The stretch at break remained unchanged. Thickness reduction of the synthetic fibres resulted in an increase of tear strength. The effect is due to the high fibre length of synthetic fibres, producing mechanically well entangled networks, coupled with the high enough strength of the synthetic fibres.

AB - The objective was to evaluate the effects on paper properties when replacing a minor share of wood fibre by synthetic fibre. The aim was to increase tear strength and stretch while minimizing the loss of tensile strength in paper consisting of mechanical pulp. Tested synthetic fibres included PLA and viscose fibres mixed with mechanical or chemi-mechanical pulp.Even at relatively low proportions, the synthetic fibres contributed to a significant increase of tear strength in the wood fibre based papers. With the highest tested proportion (20%) the increase of tear index in PGW based stock was 243% with PLA and 177% with viscose fibre. However, a simultaneous decrease in tensile strength and tensile stiffness was observed. The stretch at break remained unchanged. Thickness reduction of the synthetic fibres resulted in an increase of tear strength. The effect is due to the high fibre length of synthetic fibres, producing mechanically well entangled networks, coupled with the high enough strength of the synthetic fibres.

KW - tear strength

KW - tensile strength

KW - PGW

KW - CTMP

KW - synthetic fibres

KW - mechanical pulp

KW - PLA viscose

M3 - Article

VL - 29

SP - 304

EP - 308

JO - Nordic Pulp and Paper Research Journal

JF - Nordic Pulp and Paper Research Journal

SN - 0283-2631

IS - 2

ER -