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Magazine articles
Nanotechnology for Forest Product, Part 1, Solutions!, July 2005, Vol. 88(7) (276KB)
Nanotechnology for Forest Product, Part 1, Solutions!, July 2005, Vol. 88(7) (276KB)
Magazine articles
Steam savings from nanochemistry, Solutions!, November 2004, Vol. 87(11) (130KB)
Steam savings from nanochemistry, Solutions!, November 2004, Vol. 87(11) (130KB)
Magazine articles
Nanotechnology for Forest Products, PART 2, Solutions!, August 2005, Vol. 88(8) (408KB)
Nanotechnology for Forest Products, PART 2, Solutions!, August 2005, Vol. 88(8) (408KB)
Magazine articles
Nanotechnology conference targets research options, Solution
Nanotechnology conference targets research options, Solutions!, February 2005, Vol. 88(2) (117KB)
Magazine articles
Nano Chemistry and the Power of "Z" Give Printers an Edge, Solutions!, December 2005, Vol. 88(12) (160 KB)
Nano Chemistry and the Power of "Z" Give Printers an Edge, Solutions!, December 2005, Vol. 88(12) (160 KB)
Magazine articles
Coating Pigments: From Size and Shape to Nanotech, Solutions!, September 2005, Vol. 88(9) (152 KB)
Coating Pigments: From Size and Shape to Nanotech, Solutions!, September 2005, Vol. 88(9) (152 KB)
Journal articles
Magazine articles
Characterizing rheological behavior and fluidization of highly refined furnishes, TAPPI Journal April 2024
ABSTRACT: In this work, highly refined softwood bleached kraft pulp (SWBKP) furnishes, referred to here as XFC, were studied from the perspective of fiber suspension handling in processing. The rheology of the furnishes was studied with a rotational rheometer using a non-standard flow geometry to understand the viscosity development at different consistencies and the impact of temperature. For fluidization analysis during pipe flow, two optical methods were implemented; namely, optical coherence tomography (OCT) and high-speed video (HSV) imaging. The OCT was used to determine the small-scale floc structures near the pipe wall where the shear stress is highest, and the HSV imaging was applied for observing flow instabilities and XFC suspension uniformity at the pipe scale. All these issues can be significant in deciding the minimum flow rate required for a process pipe to get sufficient fluidization of XFC suspensions.
Journal articles
Magazine articles
Wet-end addition of nanofibrillated cellulose pretreated with cationic starch to achieve paper strength with less refining and higher bulk, TAPPI JOURNAL July 2018
Wet-end addition of nanofibrillated cellulose pretreated with cationic starch to achieve paper strength with less refining and higher bulk, TAPPI JOURNAL July 2018
Journal articles
Magazine articles
Rice straw-based sustainable food packaging material with improved strength and barrier properties: Development and characterization, TAPPI Journal October 2023
ABSTRACT: Sustainable food packaging paper with high barrier and strength properties was developed with rice straw nanocellulose materials. Pulping and bleaching of rice straw were performed using an organosolv pulping and DED (D: chlorine dioxide bleaching; E: sodium hydroxide extraction) bleaching sequence. Bleached rice straw pulp was refined to 90°SR using a laboratory Valley beater. The laboratory handsheets were prepared using pulp slurry at 40°SR and 90°SR. The handsheets of cellulose nanofibrils (CNFs) made of highly refined pulp (90°SR) were surface sized using alkyl ketene dimer (AKD) wax to increase the barrier properties of paper for selective food packaging applications. The paper samples were tested for mechanical, optical, surface, and barrier properties, including tensile index, burst index, tearing index, bending stiffness, elongation, porosity, apparent density, opacity, Cobb value, water vapor transmission rate (WVTR), oil and grease resistance, and contact angle. The refined pulp (90°SR) was analyzed using field-emission scanning electron microscopy (FE-SEM), and it was observed that the morphology of the developed fibers changes to the nanoscale (<100 nm) for at least one dimension. The particle size distribution of the refined pulp using DLS analyzer also confirmed the cellulose fibers to near nanoscale. It was concluded that nanofibers were formed by a high degree of the mechanical pulp refining process and found to be much more economical than alternative processes in this direction. The sample handsheets of CNFs showed good strength and barrier properties. The barrier properties further increased when surface sizing was done using low-cost, nontoxic, and biodegradable AKD wax.
Journal articles
Magazine articles
Physical handsheet properties of pulp furnishes containing attritor-treated fibers, TAPPI JOURNAL January 2017
Physical handsheet properties of pulp furnishes containing attritor-treated fibers, TAPPI JOURNAL January 2017