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Treatment levels of 4-acetamido-TEMPO oxidized thermomechanical pulp to improve paper properties and clay retention

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Myja, D. et Loranger, E. et Lanouette, R. (2019). Treatment levels of 4-acetamido-TEMPO oxidized thermomechanical pulp to improve paper properties and clay retention. BioResources, 14 (3). p. 7056-7067. ISSN 1930-2126

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Résumé

TEMPO-oxidized thermomechanical pulp (TMP) prepared at low-oxidized and highly oxidized levels was compared with untreated TMP to observe the advantage of each pulp on paper properties. While the low oxidized pulp and non-oxidized pulp gave similar properties, highly oxidized TMP significantly increased tensile strength and decreased tear strength. Brightness was negatively affected by oxidation. In order to improve the paper optical properties, the use of a conventional mineral filler retention system was studied, using clay as filler. The high charge induced by the oxidized pulp significantly modified the pulp retention behavior. Moreover, paper made from pulp containing oxidized pulp and clay presented considerably better tensile strength with a loss in tear resistance for the same brightness target, which could be interesting for some paper applications. © 2019, North Carolina State University.

Type de document: Article
Mots-clés libres: 4-acetamido-TEMPO oxidation mineral filler retention paper properties thermomechanical pulp fillers luminance oxidation tensile strength thermomechanical treatment 4 acetamido tempos mineral filler oxidized pulp retention behavior tear resistance tear strength treatment level thermomechanical pulping process clay filler Retention pulps
Date de dépôt: 01 juill. 2021 15:59
Dernière modification: 01 juill. 2021 16:01
Version du document déposé: Version officielle de l'éditeur
URI: http://depot-e.uqtr.ca/id/eprint/9633

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