Refining of polysulfide pulps

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Tarih

2007

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Asian Network for Scientific Information

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

This study compares the modified kraft process, polysulfide pulping, one of the methods to obtain higher pulp yield, with conventional kraft method. More specifically, the study focuses on the refining effects of polysulfide pulp, which is an area with limited literature. Physical, mechanical and chemical properties of kraft and polysulfide pulps (4% elemental sulfur addition to cooking digester) cooked under the same conditions were studied as regards to their behavior under various PFI refining (0, 3000, 6000, 9000 revs.). Polysulfide (PS) pulping, compared to the kraft method, resulted in higher pulp yield and higher pulp kappa number. Polysulfide also gave pulp having higher tensile and burst index. However, the strength of polysulfide pulp, tear index at a constant tensile index, was found to be 15% lower as compared to the kraft pulp. Refining studies showed that moisture holding ability of chemical pulps mostly depends on the chemical nature of the pulp. Refining effects such as fibrillation and fine content did not have a significant effect on the hygroscopic behavior of chemical pulp. © 2007 Asian Network for Scientific Information.

Açıklama

Anahtar Kelimeler

Hygroscopicity; Kraft pulp; PFI refining; Polysulfide pulp; Sugar contents

Kaynak

Journal of Applied Sciences

WoS Q Değeri

Scopus Q Değeri

N/A

Cilt

7

Sayı

2

Künye