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Magazine articles
Nanotechnology conference targets research options, Solution

Nanotechnology conference targets research options, Solutions!, February 2005, Vol. 88(2) (117KB)

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)

Journal articles
Magazine articles
Scaling Up Nanotech for the Pulp and Paper Industry, Paper36

Scaling Up Nanotech for the Pulp and Paper Industry, Paper360º March/April 2017

Journal articles
Magazine articles
Ford Goes Further with Renewable Nanomaterials, Paper360º May/June 2018

Ford Goes Further with Renewable Nanomaterials, Paper360º May/June 2018

Journal articles
Magazine articles
TAPPI News, Paper360º May/June 2018

TAPPI News, Paper360º May/June 2018

Journal articles
Magazine articles
Unlocking Product Potential with Renewable Nanomaterials, Paper360º March/April 2019

Unlocking Product Potential with Renewable Nanomaterials, Paper360º March/April 2019

Journal articles
Magazine articles
Subscription Access
A novel predictive method for filler coflocculation with cellulose microfibrils, TAPPI Journal November 2019

ABSTRACT: Different strategies aimed at reducing the negative impact of fillers on paper strength have been the objective of many studies during the past few decades. Some new strategies have even been patented or commercialized, yet a complete study on the behavior of the filler flocs and their effect on retention, drainage, and formation has not been found in literature. This type of research on fillers is often limited by difficulties in simulating high levels of shear at laboratory scale similar to those at mill scale. To address this challenge, a combination of techniques was used to compare preflocculation (i.e., filler is flocculated before addition to the pulp) with coflocculation strategies (i.e., filler is mixed with a binder and flocculated before addition to the pulp). The effect on filler and fiber flocs size was studied in a pilot flow loop using focal beam reflectance measurement (FBRM) and image analysis. Flocs obtained with cationic polyacrylamide (CPAM) and benonite were shown to have similar shear resistance with both strategies, whereas cationic starch (CS) was clearly more advantageous when coflocculation strategy was used. The effect of flocculation strategy on drainage rate, STFI formation, ash retention, and standard strength properties was measured. Coflocculation of filler with CPAM plus bentonite or CS showed promising results and produced sheets with high strength but had a negative impact on wire dewatering, opening a door for further optimization.

Journal articles
Magazine articles
TAPPI Nano 2019: Focus on New Markets, Paper360º September/October 2019

TAPPI Nano 2019: Focus on New Markets, Paper360º September/October 2019

Journal articles
Magazine articles
Subscription Access
A new approach for the preparation of cellulose nanocrystals from bamboo pulp through extremely low acid hydrolysis, TAPPI Journal January 2020

ABSTRACT: As a renewable and biodegradable nanomaterial, cellulose nanocrystal (CNC) has a wide range of potential applications, but production of CNC faces significant challenges in capital investment and manufacturing cost. In this work, the one-step preparation of CNC from bleached kraft bamboo pulp by extremely low acid (concen-tration of acid = 0.1 wt%) hydrolysis was demonstrated. The experimental data indicated that the yield of CNC was strongly affected by the operating pressure and concentration of hydrochloric acid (HCl), as well as temperature. Rod-like CNC with a mean particle size of 524 nm was obtained through an extremely low acid (ELA) hydrolysis pro-cess. The yield of CNC can reach to 37.1% by an ELA hydrolysis process at 180°C for 60 min with 0.08 wt% HCl and 20 MPa operating pressure. The Fourier transform-infrared spectroscopy (FTIR) measurements show that the as-pre-pared CNC maintained cellulose structure. Compared with a conventional CNC prepared by strong sulfuric acid (H2SO4) hydrolysis, the CNC prepared by ELA hydrolysis process exhibited much higher thermal stability.