TERMIUM Plus®
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BLANCHIMENT PATES MECANIQUES [1 record]
Record 1 - internal organization data 1998-08-12
Record 1, English
Record 1, Subject field(s)
- Pulp Preparation (papermaking)
Record 1, Main entry term, English
- mechanical pulps brightening
1, record 1, English, mechanical%20pulps%20brightening
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 OBS
The object in brightening mechanical pulps is to decolourize or brighten the lignin or other colouring components without dissolving them so that the yield advantage is not lost. Mechanical pulps are brightened by treatment with either an oxidizing (hydrogen peroxide) or a reducing (sodium hydrosulphite) agent or, for higher brightness, a peroxide-hydrosulphite sequence which alters the chromophoric groups in fibres so that their light absorption is diminished. 1, record 1, English, - mechanical%20pulps%20brightening
Record 1, French
Record 1, Domaine(s)
- Préparation de la pâte à papier
Record 1, Main entry term, French
- blanchiment des pâtes mécaniques
1, record 1, French, blanchiment%20des%20p%C3%A2tes%20m%C3%A9caniques
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le blanchiment des pâtes mécaniques sert à décolorer ou à éclaircir la lignine ou autres matières colorantes sans les dissoudre, de manière à conserver l'avantage du rendement de ces pâtes. Les pâtes mécaniques sont éclaircies au moyen d'un agent oxydant (peroxyde d'hydrogène), d'un agent réducteur (hydrosulfite de sodium) ou, pour obtenir un degré de blancheur plus élevé, d'une séquence peroxyde-hydrosulfite qui décolore les groupements de chromophores dans les fibres, afin d'en diminuer le pouvoir d'absorption de la lumière. 2, record 1, French, - blanchiment%20des%20p%C3%A2tes%20m%C3%A9caniques
Record number: 1, Textual support number: 1 OBS
On trouvera le terme «blanchiment des pâtes mécaniques» dans le «Cours de formation papetière» de Jean Vilars à l'article 3.5. 3, record 1, French, - blanchiment%20des%20p%C3%A2tes%20m%C3%A9caniques
Record 1, Spanish
Record 1, Textual support, Spanish
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