Microfibril angles of softwood and hardwood pulp fibres measured with white-light polarimetry

Sabine Heinemann, Elias Retulainen

Research output: Contribution to conferenceConference PosterScientific

Abstract

The objective of this study was to develop and apply a simple method for MFA measurement and use it for fibers with different morphology and some mechanical deformations.In this study, only fibers with significant sinusoidal light intensity curves were evaluated. The assessed MFA is an average value from all wall layers and structures in the polarised light beam. In thickwalled latewood fibers, the oriented S2-layer dominates, and low angles are measured with high light intensity differences between maximum and minimum intensity values within a 90°-range of polarisation filter position (for intensity difference see Figure 4). In thinwalled earlywood fibers, the S2-layer is much thinner, and the S1- and S3-layers affect the result much more than for latewood fibers. Subsequently, the resulting measured MFA shows higher values for this type of fibers. Due to the lower fiber wall mass, the intensity difference is also smaller.
Original languageEnglish
Publication statusPublished - 2014
EventProgress in Paper Physics Seminar, PPPS 2014 - Raleigh, United States
Duration: 8 Sep 201411 Sep 2014

Conference

ConferenceProgress in Paper Physics Seminar, PPPS 2014
Abbreviated titlePPPS
CountryUnited States
CityRaleigh
Period8/09/1411/09/14

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pulp fiber
latewood
softwood
white light
hardwood
light intensity
earlywood
polarized light
polarimetry
methodology

Cite this

Heinemann, S., & Retulainen, E. (2014). Microfibril angles of softwood and hardwood pulp fibres measured with white-light polarimetry. Poster session presented at Progress in Paper Physics Seminar, PPPS 2014, Raleigh, United States.
Heinemann, Sabine ; Retulainen, Elias. / Microfibril angles of softwood and hardwood pulp fibres measured with white-light polarimetry. Poster session presented at Progress in Paper Physics Seminar, PPPS 2014, Raleigh, United States.
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abstract = "The objective of this study was to develop and apply a simple method for MFA measurement and use it for fibers with different morphology and some mechanical deformations.In this study, only fibers with significant sinusoidal light intensity curves were evaluated. The assessed MFA is an average value from all wall layers and structures in the polarised light beam. In thickwalled latewood fibers, the oriented S2-layer dominates, and low angles are measured with high light intensity differences between maximum and minimum intensity values within a 90°-range of polarisation filter position (for intensity difference see Figure 4). In thinwalled earlywood fibers, the S2-layer is much thinner, and the S1- and S3-layers affect the result much more than for latewood fibers. Subsequently, the resulting measured MFA shows higher values for this type of fibers. Due to the lower fiber wall mass, the intensity difference is also smaller.",
author = "Sabine Heinemann and Elias Retulainen",
note = "HUO: Poster presentation CA2: BA3144 CA2: BA3153 Project code: 74054; Progress in Paper Physics Seminar, PPPS 2014, PPPS ; Conference date: 08-09-2014 Through 11-09-2014",
year = "2014",
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Heinemann, S & Retulainen, E 2014, 'Microfibril angles of softwood and hardwood pulp fibres measured with white-light polarimetry' Progress in Paper Physics Seminar, PPPS 2014, Raleigh, United States, 8/09/14 - 11/09/14, .

Microfibril angles of softwood and hardwood pulp fibres measured with white-light polarimetry. / Heinemann, Sabine; Retulainen, Elias.

2014. Poster session presented at Progress in Paper Physics Seminar, PPPS 2014, Raleigh, United States.

Research output: Contribution to conferenceConference PosterScientific

TY - CONF

T1 - Microfibril angles of softwood and hardwood pulp fibres measured with white-light polarimetry

AU - Heinemann, Sabine

AU - Retulainen, Elias

N1 - HUO: Poster presentation CA2: BA3144 CA2: BA3153 Project code: 74054

PY - 2014

Y1 - 2014

N2 - The objective of this study was to develop and apply a simple method for MFA measurement and use it for fibers with different morphology and some mechanical deformations.In this study, only fibers with significant sinusoidal light intensity curves were evaluated. The assessed MFA is an average value from all wall layers and structures in the polarised light beam. In thickwalled latewood fibers, the oriented S2-layer dominates, and low angles are measured with high light intensity differences between maximum and minimum intensity values within a 90°-range of polarisation filter position (for intensity difference see Figure 4). In thinwalled earlywood fibers, the S2-layer is much thinner, and the S1- and S3-layers affect the result much more than for latewood fibers. Subsequently, the resulting measured MFA shows higher values for this type of fibers. Due to the lower fiber wall mass, the intensity difference is also smaller.

AB - The objective of this study was to develop and apply a simple method for MFA measurement and use it for fibers with different morphology and some mechanical deformations.In this study, only fibers with significant sinusoidal light intensity curves were evaluated. The assessed MFA is an average value from all wall layers and structures in the polarised light beam. In thickwalled latewood fibers, the oriented S2-layer dominates, and low angles are measured with high light intensity differences between maximum and minimum intensity values within a 90°-range of polarisation filter position (for intensity difference see Figure 4). In thinwalled earlywood fibers, the S2-layer is much thinner, and the S1- and S3-layers affect the result much more than for latewood fibers. Subsequently, the resulting measured MFA shows higher values for this type of fibers. Due to the lower fiber wall mass, the intensity difference is also smaller.

M3 - Conference Poster

ER -

Heinemann S, Retulainen E. Microfibril angles of softwood and hardwood pulp fibres measured with white-light polarimetry. 2014. Poster session presented at Progress in Paper Physics Seminar, PPPS 2014, Raleigh, United States.