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Factors affecting particulate removal efficiency of kraft recovery boiler electrostatic precipitators: a technical review, TAPPI JOURNAL May 2018
Factors affecting particulate removal efficiency of kraft recovery boiler electrostatic precipitators: a technical review, TAPPI JOURNAL May 2018
Journal articles
Magazine articles
Dry chip feedrate control using online chip moisture, TAPPI JOURNAL May 2018
Dry chip feedrate control using online chip moisture, TAPPI JOURNAL May 2018
Journal articles
Magazine articles
Monitoring the free lime content in lime mud using zeta potential, TAPPI JOURANL April 2018
Monitoring the free lime content in lime mud using zeta potential, TAPPI JOURANL April 2018
Journal articles
Magazine articles
On the nominal transverse shear strai to characterize the severity of creasing, TAPPI JOURNAL April 2018
On the nominal transverse shear strai to characterize the severity of creasing, TAPPI JOURNAL April 2018
Journal articles
Magazine articles
Enzymatic treated viscose fibers functionalized by chitosan, TAPPI JOURNAL August 2018
Enzymatic treated viscose fibers functionalized by chitosan, TAPPI JOURNAL August 2018
Journal articles
Magazine articles
Effect of pulper consistency on stickies size distribution, TAPPI JOURNAL August 2018
Effect of pulper consistency on stickies size distribution, TAPPI JOURNAL August 2018
Journal articles
Magazine articles
Investigation on the recycling of sulfuric acid from pretreatment of cellulose for nanocellulose preparation, TAPPI JOURNAL February 2020
ABSTRACT: Sulfuric acid is often used to pretreat cellulose prior to homogenization and conversion to nanocellulose. It would be economically significant to reuse the acid to close the overall value chain loop. The target of this work was to investigate the effect of recovery and recycling frequency of sulfuric acid from the pretreatments on the pretreatment yield of water-insoluble cellulose solid residue, and to explore the relationship between the nanocellulose size prepared by recovery of acid and number of cycles. The surface properties of the nanocelluloses were measured, including content of sulfate groups, absolute zeta potential, crystallinity, and thermal stability.
Journal articles
Magazine articles
On increasing wet-web strength with adhesive polymers, TAPPI JOURNAL February 2020
ABSTRACT: Fiber-fiber adhesion, called “bonding” in the old paper physics literature, is a critical component of the overall strength of dry paper. With freshly formed very wet pulp fiber webs, all evidence suggests there are no fiber-fiber crossings with significant adhesive joint strength. With water removal, a point will be reached where fiber-fiber adhesion starts to contribute to the overall wet-web strength.The literature reveals very few examples of polymers that increase fiber-fiber joint strength in freshly formed webs. Here, we summarize the literature and explain why it is so difficult to promote fiber-fiber wet adhesion with polymers. Nevertheless, ongoing research in areas as diverse as tissue engineering scaffolds and biomimetic adhesives gives clues to future developments. Advances in paper machine engineering have lessened the importance of wet-web strength. By contrast, a critical issue in many of the evolving nanocellulose technologies is the strength of objects first formed by aqueous processing, the green strength—the strength of wet bodies before drying. For exam-ple, 3-D printed nanocellulose objects and ultralow density cellulosic aerogels can be destroyed by capillary forces during drying. There is a need for adhesives that strengthen freshly formed, wet lignocellulosic joints.
Journal articles
Magazine articles
Assessing variation in package modeling, TAPPI Journal April 2021
ABSTRACT: Predictions from empirical models are affected by variability in the input parameters for the data set used to build the models. For corrugated boxes, the difference between actual and modeled compression strength creates a real cost associated with box production, often resulting in boxes that may need to be over-designed to compensate for a lack of model precision. No work to date has attempted to assess the limitation in these compression estimates due to input parameter testing variability. In this paper we approach that problem, initially for the McKee equation and then conceptually for other box models. For our industry to do a better job at meeting the needs of our corrugated packaging customers, we need to reduce the variation in the tests we all rely on, particularly for evaluating material strength (edge crush test [ECT]) and package compression performance (box compression test [BCT]).
Journal articles
Physico-mechanical and ethylene scavenging properties of active packaging from Bambusa fibers modified with TiO2 /Cu2O composite, TAPPI Journal February 2026
ABSTRACT: The physico-mechanical and ethylene scavenging properties of active packaging consisting of paper prepared from bamboo (Bambusa vulgaris) fibers loaded with varying concentrations of nano titanium dioxide/cuprous oxide (TiO2/Cu2O) composite was investigated for its ability to delay ripening of Philippine climacteric fruits. Tests of paper containing 1% to 5% TiO2/Cu2O showed no or limited negative impact on its physical, optical, and mechanical properties. Images from a field emission scanning electron microscope equipped with energy-dispersive X-ray spectroscopy (FESEM-EDS) showed dispersion and agglomeration of TiO2/Cu2O nanoparticles on the paper surface. The percent weight of titanium and copper increased with increasing metal oxide composite concentration used in this study. Attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy indicated small shifts in band intensity at 3330 cm-1 and 1100 cm-1 in the hydroxyl (O-H) and C-O regions, respectively, suggesting possible chemical or physical interactions between the metal oxide and paper. Contact angle measurement suggest- ed that TiO2/Cu2O nanoparticles may have imparted paper hydrophobicity at 3% & 5% concentration, possibly through increased microscale roughness. The ethylene scavenging experiment indicated that there was a significant delay in the ripening process of mango and tomato when packed in paper doped with 3% and 5% TiO2/Cu2O. The fruits were greener with a firmer texture compared with untreated control after three days of storage under natural light and ambient condition. The preliminary results suggested that 3% &5% TiO2/Cu2O active packaging modification can remove ethylene from the fruit's storage environment, extending shelf life and maintain quality for three days. This simple technique could have potential economic benefits for the fruit industry by directly reducing post-harvest waste, and the delayed ripening could provide flexibility in supply chain management.