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Nanoparticle control of wet end extractives yields better runnability

Pulp & Paper, 2004-03, Vol.78 (3), p.44-46

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Title:
Nanoparticle control of wet end extractives yields better runnability
Author: Carr, D.S
Subjects: Correlation analysis ; Nanoparticles ; Production methods ; pulp and paper mills ; Pulp mills ; Statistical analysis ; Studies ; Ultraviolet radiation ; wood pulp
Is Part Of: Pulp & Paper, 2004-03, Vol.78 (3), p.44-46
Description: One way wood-containing mills can positively influence sheet properties is to measure and control extractives content in the wet end. A new, simple-to-operate technique using an ultraviolet (UV) spectrophotometer to quantify the extractive reduction provides very fast results. Nanoparticle drainage and drying effects can be realized immediately on groundwood grades if the initial retention is higher than a certain threshold value. This study used a lignin peak around 280 nm to establish whether there was a relationship between the lignin released and the extractive released from a particular furnish. If there is a correlation, the well-defined lignin peak could indirectly indicate extractive content. However, if the correlation is poor, the known UV absorption wavelength of a particular extractive may be used. The high molecular weight polydadmac in this case was the most effective anionic trash catcher. It was also associated with the greatest reduction in UV absorption.
Publisher: San Francisco: RISI, Inc
Language: English
Identifier: ISSN: 0033-4081
CODEN: PUPAA8
Source: ProQuest Central

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