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Journal articles
On management: Machine doctors: A prescription for teamwork, TAPPI JOURNAL, October 1997, Vol. 80(10)
On management: machine doctors: a prescription for teamwork, TAPPI JOURNAL, October 1997, Vol. 80(10)
Journal articles
Capital effectiveness of the paper industry, TAPPI JOURNAL, October 1997, Vol. 80(10)
Capital effectiveness of the paper industry, TAPPI JOURNAL, October 1997, Vol. 80(10)
Journal articles
Factors influencing the rate of charge decay, TAPPI JOURNAL, October 1997
Factors influencing the rate of charge decay, TAPPI JOURNAL, October 1997
Journal articles
Highly branched cationic polyelectrolytes: fines retention, TAPPI JOURNAL, October 1997, Vol. 80(10)
Highly branched cationic polyelectrolytes: fines retention, TAPPI JOURNAL, October 1997, Vol. 80(10)
Journal articles
Peroxyformic acid pulping of nonwood plants by the milox method, part 2: reed pulp for woodfree fine papers, TAPPI JOURNAL, October 1997, Vol. 80(10)
Peroxyformic acid pulping of nonwood plants by the milox method, part 2: reed pulp for woodfree fine papers, TAPPI JOURNAL, October 1997, Vol. 80(10)
Journal articles
Financial performance, capital expenditures, and international activities of the north american pulp and paper industry, TAPPI JOURNAL, October 1997, Vol. 80(10)
Financial performance, capital expenditures, and international activities of the north american pulp and paper industry, TAPPI JOURNAL, October 1997, Vol. 80(10)
Journal articles
The 200th anniversary of the paper machine, Part 1: The first 100 years, TAPPI JOURNAL, October 1997, Vol. 80(10)
The 200th anniversary of the paper machine, part 1: the first 100 years, TAPPI JOURNAL, October 1997, Vol. 80(10)
Journal articles
Magazine articles
Comparative study of guar gum and its cationic derivatives as pre-flocculating polymers for PCC fillers in papermaking applications, TAPPI Journal April 2022
ABSTRACT: In this work, gums from guar seeds were evaluated as a potential precipitated calcium carbonate (PCC) filler pre-flocculant to induce functional filler in papermaking applications. In recent years, guar has been conidered one of the promising wet-end additives due to its abundance, rich source of hemicellulose content, and bio-degradability. However, application of guar gum in filler pretreatment methods for producing high ash paper has scarcely been reported. In this paper, the flocculating ability of three types of guar gum was established with charge analysis and turbidity (NTU) of the system at 1% and 5% for each gum: native gum (NG) having a degree of substitution (DS) of 0, and cationic gums having a DS value of 0.07 (CL) and 0.15 (CH). It was interesting to observe that even at a 5% dose of G, the charge density of PCC did not deviate much from the initial values. The system carried a weak negativeharge, resulting in an unstable colloidal suspension that led to PCC-PCC particle bridging. On the other hand, the operative mechanism of CL and CH during adsorption and PCC flocculation was predicted to be charge neutralization and electrostatic-patch formation, accompanied by particle bridging. Note that CL, with a maximum 47.5% eduction in residual turbidity of PCC at a 1% dose, was much more efficient in doing so than the other two gums; NG had a 40% maximum reduction in residual turbidity at a 5% dose and CH had a maximum 30% reduction at a 1% ose. Later on, floc formation and structure were correlated with optical and field emission scanning electron microscopy (FE-SEM) images. In the next set of trials, paper properties were determined by varying the different gum dosages from 0.2% to 5% at a constant dose of 20% filler. It is also noteworthy to mention that with 1% CL (low DS) dose, PCC retention increased by 39%, which also enhanced the tensile, tear, burst, and opacity properties by 11%, 19%, 5%, and 4.4%, respectively, without significantly affecting the bulk properties. Further, wide-angle X-ray diffraction (XRD) analysis nd Fourier transform infrared (FTIR) analysis revealed that pre-flocculating PCC with a 1% gum dose did not induce any change in crystalline transformation. Based on observation, it was found that cationic gums with low DS values re a better choice for maximizing the strength of paper while maintaining bulk and high opacity when pre-flocculaion is adopted to increase the filler retention in paper.
Journal articles
Magazine articles
The Creep Properties of Paper, TAPPI Journal August 2022
ABSTRACT: The creep proprties of alpha-pup handshetts were determined at various constant tensile loads and relative humidities for the purpose of clarifying the prerupture mechanical behavior of paper.
Journal articles
Examination of the potential to reduce water application rates in pine wet decks, TAPPI JOURNAL October 2015
Examination of the potential to reduce water application rates in pine wet decks, TAPPI JOURNAL October 2015