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Meltblown polyester solves a food processing filtration problem, TAPPI JOURNAL February 1988 88FEB79

Meltblown polyester solves a food processing filtration problem, TAPPI JOURNAL February 1988

Fibers properties and tearing resistance, TAPPI JOURNAL February 1988 88FEB103

Fibers properties and tearing resistance, TAPPI JOURNAL February 1988

High-solids black liquor combustion-Tampella's Super Combustion system, TAPPI JOURNAL January 1988 88JAN107

High-solids black liquor combustion-Tampella's Super Combustion system, TAPPI JOURNAL January 1988

Computer simulation of a material-handling and storage system, TAPPI JOURNAL July 1988

Computer simulation of a material-handling and storage system, TAPPI JOURNAL July 1988

Measuring the swelling pressure of paper, TAPPI JOURNAL July 1988

Measuring the swelling pressure of paper, TAPPI JOURNAL July 1988

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.

Towards Process Excellence: Advanced Optimization of Grade Change Operations in Paper, TAPPICon26

Use of nanocellulose gel for self-folded architectured paper to replace regular flute of corrugated board, TAPPICon26

Yankee Steam System Optimization, TAPPICon26

AI-Assisted Safety Management: Practical Applications for Reducing Administrative Burden in Mill Operations, TAPPICon26