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Title: Ranking mechanical pulps for their potential to photoyellow

Source: Sixth European Workshop on Lignocellulosics and Pulp : Sept. 3-6, 2000, Bordeaux, France. Bordeaux, France : Bordeaux Universite, 2000: Pages 95-98

Author(s)Agarwal, Umesh P.

Publication Year: 2000  View PDF »

Category: Journal Articles

Abstract: Recently found experimental evidence has provided strong support for an alternative photoyellowing mechanism that suggests that pulp- photoyellowing occurs due to direct photooxidation of hydroquinones (present in mechanical pulps) top-quinones. Because hydroquinones were found to be present in pulps, it may be possible to quantify them. Quantification of mechanical-pulp hydroquinones is important because it would provide information on a pulp's potential for photoyellowing. One of the ways to accomplish this is to use the method that successfully detected hydroquinones, namely the method of oxygensensitivity of laser- induced-fluorescence (LIF). Preliminary findings of this work will be discussed in the presentation.

Keywords: Mechanical pulps, photoyellowing

File size: 80 kb(s)

This publication is also viewable on Treesearch:  view
RITS Product ID: 22418
Current FPL Scientist associated with this product
Agarwal, Umesh P.
Research Chemist
  

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