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Titolo:
Bond strength of oxygen-delignified kraft pulps
Autore:
Snowman, VR; Genco, JM; Cole, BJW; Kwon, HB; Miller, WJ;
Indirizzi:
Univ Maine, Orono, ME 04469 USA Univ Maine Orono ME USA 04469Univ Maine, Orono, ME 04469 USA Beloit Fiber Syst, Nashua, NH 03061 USA Beloit Fiber Syst Nashua NH USA 03061 it Fiber Syst, Nashua, NH 03061 USA
Titolo Testata:
TAPPI JOURNAL
fascicolo: 2, volume: 82, anno: 1999,
pagine: 103 - 109
SICI:
0734-1415(199902)82:2<103:BSOOKP>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
PAPER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Snowman, VR Univ Maine, Orono, ME 04469 USA Univ Maine Orono ME USA 04469Univ Maine, Orono, ME 04469 USA
Citazione:
V.R. Snowman et al., "Bond strength of oxygen-delignified kraft pulps", TAPPI J, 82(2), 1999, pp. 103-109

Abstract

Interfiber bond strength of northern hardwood kraft was measured using thedelamination procedure of Skowronski and Bichard (16) on sample withdrawn following each stage of a commercial OD(EOP)DD bleach sequence. Bond strength measurements were also conducted on brown-stock pulp following medium-consistency oxygen delignification in which the temperature (90-110 degrees C), time (0-60 min), and alkali charge (1.5-3.5%) were varied in the oxygen stage. The results show that interfiber bond strength for both the laboratory and commercial samples increased across the oxygen state, provided that high amounts of alkali are not added, making the reaction conditions harsh. The increased bond strength is thought to result from increased hydrogen bonding, which compensates for the loss of wet zero-span tensile strength ofthe pulp following exposure to oxygen.

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Documento generato il 04/12/20 alle ore 00:24:12