Verbessertes Entwässerungsverhalten von elektronenbestrahlten Holzstoffen am Beispiel von Wasserrückhaltevermögen und spezifischer Oberfläche

Sabine Heinemann, Toni Handke, Sari Liukkonen, Jari Leino, Saskia Runte, Harald Grossmann

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Pre-treatment of wood chips and wood log discs with electron irradiation results in significant changes of the mechanical pulp properties. Interesting conclusions for the application of such mechanical pulps can be drawn not only from the energy savings during refining (TMP) and grinding (SGW), but also from the resulting pulp properties such as fibre morphology and drainability. The suitability for a partial application in newsprint has already been shown in mill-scale1, and now, the property changes are focused more in detail. The varied morphology of mechanical pulps after raw material irradiation appears i.a. in shorter and more straight fibres with reduced cross-sectional dimensions and thus, with a lower coarseness. In the light microscope, smoother and more closed fibre surfaces could be observed. The swelling ability and the ability to bond water onto the fibre surface, respectively, that can be removed mechanically, decreased. Subsequently, a better drainability for these pulps was measured by water retention value and hydrodynamic specific surface area. The development of strength properties for handsheets was discussed based on the results from fiber morphology and drainability leading to the conclusion that mechanical pulps after electron irradiation can be produced more energy-efficient with good drainability but some strength decay.
Original languageEnglish
Title of host publicationProceedings
Subtitle of host publicationDie österreichische Papierfachtagung, Graz, 23.-24.05.2012
Place of PublicationGraz, Austria
PublisherAPV Graz - Akademischer Papieringenieurs Verein
Publication statusPublished - 2012
MoE publication typeNot Eligible
EventInternational Austrian Paper Conference - Österreichische Papierfachtagung 2012 - Graz, Austria
Duration: 23 May 201224 May 2012

Conference

ConferenceInternational Austrian Paper Conference - Österreichische Papierfachtagung 2012
CountryAustria
CityGraz
Period23/05/1224/05/12

Fingerprint

mechanical pulp
irradiation
pulp
newsprint
electrons
wood logs
wood chips
energy
refining
grinding
light microscopes
hydrodynamics
raw materials
surface area
pretreatment
water
deterioration

Keywords

  • Mechanical pulping
  • TMP
  • irradiation
  • dewatering
  • water retention value
  • specific surface area
  • fibre properties

Cite this

Heinemann, S., Handke, T., Liukkonen, S., Leino, J., Runte, S., & Grossmann, H. (2012). Verbessertes Entwässerungsverhalten von elektronenbestrahlten Holzstoffen am Beispiel von Wasserrückhaltevermögen und spezifischer Oberfläche. In Proceedings: Die österreichische Papierfachtagung, Graz, 23.-24.05.2012 Graz, Austria: APV Graz - Akademischer Papieringenieurs Verein.
Heinemann, Sabine ; Handke, Toni ; Liukkonen, Sari ; Leino, Jari ; Runte, Saskia ; Grossmann, Harald. / Verbessertes Entwässerungsverhalten von elektronenbestrahlten Holzstoffen am Beispiel von Wasserrückhaltevermögen und spezifischer Oberfläche. Proceedings: Die österreichische Papierfachtagung, Graz, 23.-24.05.2012. Graz, Austria : APV Graz - Akademischer Papieringenieurs Verein, 2012.
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title = "Verbessertes Entw{\"a}sserungsverhalten von elektronenbestrahlten Holzstoffen am Beispiel von Wasserr{\"u}ckhalteverm{\"o}gen und spezifischer Oberfl{\"a}che",
abstract = "Pre-treatment of wood chips and wood log discs with electron irradiation results in significant changes of the mechanical pulp properties. Interesting conclusions for the application of such mechanical pulps can be drawn not only from the energy savings during refining (TMP) and grinding (SGW), but also from the resulting pulp properties such as fibre morphology and drainability. The suitability for a partial application in newsprint has already been shown in mill-scale1, and now, the property changes are focused more in detail. The varied morphology of mechanical pulps after raw material irradiation appears i.a. in shorter and more straight fibres with reduced cross-sectional dimensions and thus, with a lower coarseness. In the light microscope, smoother and more closed fibre surfaces could be observed. The swelling ability and the ability to bond water onto the fibre surface, respectively, that can be removed mechanically, decreased. Subsequently, a better drainability for these pulps was measured by water retention value and hydrodynamic specific surface area. The development of strength properties for handsheets was discussed based on the results from fiber morphology and drainability leading to the conclusion that mechanical pulps after electron irradiation can be produced more energy-efficient with good drainability but some strength decay.",
keywords = "Mechanical pulping, TMP, irradiation, dewatering, water retention value, specific surface area, fibre properties",
author = "Sabine Heinemann and Toni Handke and Sari Liukkonen and Jari Leino and Saskia Runte and Harald Grossmann",
note = "Optimized production of irradiated TMP (E-TMP) furnish Project code: 78614-1.0",
year = "2012",
language = "English",
booktitle = "Proceedings",
publisher = "APV Graz - Akademischer Papieringenieurs Verein",
address = "Austria",

}

Heinemann, S, Handke, T, Liukkonen, S, Leino, J, Runte, S & Grossmann, H 2012, Verbessertes Entwässerungsverhalten von elektronenbestrahlten Holzstoffen am Beispiel von Wasserrückhaltevermögen und spezifischer Oberfläche. in Proceedings: Die österreichische Papierfachtagung, Graz, 23.-24.05.2012. APV Graz - Akademischer Papieringenieurs Verein, Graz, Austria, International Austrian Paper Conference - Österreichische Papierfachtagung 2012, Graz, Austria, 23/05/12.

Verbessertes Entwässerungsverhalten von elektronenbestrahlten Holzstoffen am Beispiel von Wasserrückhaltevermögen und spezifischer Oberfläche. / Heinemann, Sabine; Handke, Toni; Liukkonen, Sari; Leino, Jari; Runte, Saskia; Grossmann, Harald.

Proceedings: Die österreichische Papierfachtagung, Graz, 23.-24.05.2012. Graz, Austria : APV Graz - Akademischer Papieringenieurs Verein, 2012.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Verbessertes Entwässerungsverhalten von elektronenbestrahlten Holzstoffen am Beispiel von Wasserrückhaltevermögen und spezifischer Oberfläche

AU - Heinemann, Sabine

AU - Handke, Toni

AU - Liukkonen, Sari

AU - Leino, Jari

AU - Runte, Saskia

AU - Grossmann, Harald

N1 - Optimized production of irradiated TMP (E-TMP) furnish Project code: 78614-1.0

PY - 2012

Y1 - 2012

N2 - Pre-treatment of wood chips and wood log discs with electron irradiation results in significant changes of the mechanical pulp properties. Interesting conclusions for the application of such mechanical pulps can be drawn not only from the energy savings during refining (TMP) and grinding (SGW), but also from the resulting pulp properties such as fibre morphology and drainability. The suitability for a partial application in newsprint has already been shown in mill-scale1, and now, the property changes are focused more in detail. The varied morphology of mechanical pulps after raw material irradiation appears i.a. in shorter and more straight fibres with reduced cross-sectional dimensions and thus, with a lower coarseness. In the light microscope, smoother and more closed fibre surfaces could be observed. The swelling ability and the ability to bond water onto the fibre surface, respectively, that can be removed mechanically, decreased. Subsequently, a better drainability for these pulps was measured by water retention value and hydrodynamic specific surface area. The development of strength properties for handsheets was discussed based on the results from fiber morphology and drainability leading to the conclusion that mechanical pulps after electron irradiation can be produced more energy-efficient with good drainability but some strength decay.

AB - Pre-treatment of wood chips and wood log discs with electron irradiation results in significant changes of the mechanical pulp properties. Interesting conclusions for the application of such mechanical pulps can be drawn not only from the energy savings during refining (TMP) and grinding (SGW), but also from the resulting pulp properties such as fibre morphology and drainability. The suitability for a partial application in newsprint has already been shown in mill-scale1, and now, the property changes are focused more in detail. The varied morphology of mechanical pulps after raw material irradiation appears i.a. in shorter and more straight fibres with reduced cross-sectional dimensions and thus, with a lower coarseness. In the light microscope, smoother and more closed fibre surfaces could be observed. The swelling ability and the ability to bond water onto the fibre surface, respectively, that can be removed mechanically, decreased. Subsequently, a better drainability for these pulps was measured by water retention value and hydrodynamic specific surface area. The development of strength properties for handsheets was discussed based on the results from fiber morphology and drainability leading to the conclusion that mechanical pulps after electron irradiation can be produced more energy-efficient with good drainability but some strength decay.

KW - Mechanical pulping

KW - TMP

KW - irradiation

KW - dewatering

KW - water retention value

KW - specific surface area

KW - fibre properties

M3 - Conference article in proceedings

BT - Proceedings

PB - APV Graz - Akademischer Papieringenieurs Verein

CY - Graz, Austria

ER -

Heinemann S, Handke T, Liukkonen S, Leino J, Runte S, Grossmann H. Verbessertes Entwässerungsverhalten von elektronenbestrahlten Holzstoffen am Beispiel von Wasserrückhaltevermögen und spezifischer Oberfläche. In Proceedings: Die österreichische Papierfachtagung, Graz, 23.-24.05.2012. Graz, Austria: APV Graz - Akademischer Papieringenieurs Verein. 2012