Neutrals in southern pine tall oil

A. H. Conner; J. W. Rowe

doi:10.1007/bf02639190

Neutrals in southern pine tall oil

Journal of the American Oil Chemists Society ◽

10.1007/bf02639190 ◽

1975 ◽

Vol 52 (9) ◽

pp. 334-338 ◽

Cited By ~ 35

Author(s):

A. H. Conner ◽

J. W. Rowe

Keyword(s):

Southern Pine ◽

Tall Oil

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Investigations on tall oil of Southern Pine wood

Wood Science and Technology ◽

10.1007/bf00584039 ◽

1980 ◽

Vol 14 (2) ◽

pp. 101-106 ◽

Cited By ~ 5

Author(s):

H. Traitler ◽

K. Kratzl

Keyword(s):

Southern Pine ◽

Tall Oil ◽

Pine Wood

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New neutral diterpenes from southern pine tall oil

Phytochemistry ◽

10.1016/0031-9422(71)85088-4 ◽

1977 ◽

Vol 16 (11) ◽

pp. 1777-1781 ◽

Cited By ~ 22

Author(s):

Anthony H. Conner ◽

John W. Rowe

Keyword(s):

Southern Pine ◽

Tall Oil

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Investigations on tall oil of southern pine wood

Wood Science and Technology ◽

10.1007/bf00353459 ◽

1980 ◽

Vol 14 (1) ◽

pp. 9-20 ◽

Cited By ~ 5

Author(s):

H. Traitler ◽

K. Kratzl

Keyword(s):

Southern Pine ◽

Tall Oil ◽

Pine Wood

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Polysulfide-borohydride modification of southern pine alkaline pulping integrated with hydrothermal pre-extraction of hemicelluloses

TAPPI Journal ◽

10.32964/tj10.7.9 ◽

2011 ◽

Vol 10 (7) ◽

pp. 9-16

Author(s):

SUNG-HOON YOON ◽

HARRY CULLINAN ◽

GOPAL A. KRISHNAGOPALAN

Keyword(s):

Loblolly Pine ◽

Sodium Borohydride ◽

Kraft Pulping ◽

Hot Water ◽

Pulp Yield ◽

Paper Strength ◽

Southern Pine ◽

Two Stage ◽

Simultaneous Treatment ◽

Process Modification

We studied three process modifications to investigate their effects on the property and yield recovery capabilities of kraft pulping integrated with hemicellulose pre-extraction of southern pine. Loblolly pine chips were pre-extracted with hot water until the sugar extraction yield reached the targeted value of 10% and then subjected to conventional and modified kraft pulping. Modification included polysulfide pretreatment; polysulfide-sodium borohydride dual pretreatment, and polysulfide followed by polysulfide-sodium borohydride dual pretreatment two-stage pretreatments prior to kraft pulping. In the first modification, about 5% of the lost pulp yield (total 7%) caused by hemicellulose pre-extraction could be recovered with 15%-20% polysulfide pretreatment. Complete recovery (7%) was achieved with simultaneous pretreatment using 15% polysulfide and 0.5% sodium borohydride with 0.1% anthraquinone in polysulfide-sodium borohydride dual pretreatment. Two-stage pretreatment using recycled 15% polysulfide followed by simultaneous treatment of 6% polysulfide and 0.4%–0.5% sodium borohydride with 0.1% anthraquinone also achieved 100% yield recovery. Continuous recycling of 15% polysulfide employed in the two-stage process modification maintained its yield protection efficiency in a repeated recycling cycle. No significant changes in paper strength were found in handsheets prepared from the three process modifications, except for a minor reduction in tear strength.

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