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Journal articles
Open Access
A Kids' View of 'Forests For Our Future', TAPPI JOURNAL, January 2000, Vol. 83(1)

A Kids' View of 'Forests For Our Future', TAPPI JOURNAL, January 2000, Vol. 83(1)

Journal articles
Open Access
Data for better maintenance plans and investments policy, Solutions! & TAPPI JOURNAL, August 2003, Vol. 2(8) (354KB)

Data for better maintenance plans and investments policy, Solutions! & TAPPI JOURNAL, August 2003, Vol. 2(8) (354KB)

Journal articles
Magazine articles
Open Access
Probing the molecular weights of sweetgum and pine kraft lignin fractions, TAPPI Journal June 2021

ABSTRACT: The present investigation undertook a systematic investigation of the molecular weight (MW) of kraft lignins throughout the pulping process to establish a correlation between MW and lignin recovery at different extents of the kraft pulping process. The evaluation of MW is crucial for lignin characterization and utilization, since it is known to influence the kinetics of lignin reactivity and its resultant physico-chemical properties. Sweetgum and pine lignins precipitated from black liquor at different pHs (9.5 and 2.5) and different extents of kraft pulping (30•150 min) were the subject of this effort. Gel permeation chromatography (GPC) was used to determine the number average molecular weight (Mn), mass average molecular weight (Mw), and polydispersity of the lignin samples. It was shown that the MW of lignins from both feedstocks follow gel degradation theory; that is, at the onset of the kraft pulping process low molecular weight-lignins were obtained, and as pulping progressed, the molecular weight peaked and subsequently decreased. An important finding was that acetobromination was shown to be a more effective derivatization technique for carbohydrates containing lignins than acetylation, the technique typically used for derivatization of lignin.

Journal articles
Open Access
Development of Predictive Oxygen Delignification Models Usin

Development of Predictive Oxygen Delignification Models Using Kinetic Expressions and Neural Networks, TAPPI JOURNAL, May 2006, Vol. 5(5) (151 KB)

Journal articles
Open Access
Conference review: Recycling sessions at TAPPI PEERS, TAPPI JOURNAL February 2012

Conference review: Recycling sessions at TAPPI PEERS, TAPPI JOURNAL February 2012

Journal articles
Open Access
Public perceptions of the pulp and paper industry, TAPPI JOURNAL, October 1996, Vol. 79(10)

Public perceptions of the pulp and paper industry, TAPPI JOURNAL, October 1996, Vol. 79(10)

Journal articles
Open Access
The outer limits of paper recovery and recycling, TAPPI JOURNAL, April 1997, Vol. 80(4)

The outer limits of paper recovery and recycling, TAPPI JOURNAL, April 1997, Vol. 80(4)

Journal articles
Open Access
Variation of white water composition in a tmp and dip newsprint paper machine, TAPPI JOURNAL, August 1997, Vol. 80(8)

Variation of white water composition in a tmp and dip newsprint paper machine, TAPPI JOURNAL, August 1997, Vol. 80(8)

Journal articles
Open Access
Outsourcing providers, TAPPI JOURNAL, February 1997, Vol. 80(2)

Outsourcing providers, TAPPI JOURNAL, February 1997, Vol. 80(2)

Journal articles
Open Access
System control, monitoring and piping considerations for automated grease system, TAPPI JOURNAL, February 1997, Vol. 80(2)

System control, monitoring and piping considerations for automated grease system, TAPPI JOURNAL, February 1997, Vol. 80(2)

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