Paper360 - September/October 2016 - 58

techlink | INSIDE W W W. TA P P I . ORG JOURNAL G INDUSTRI ES' TECHNICA THE PAPER AND PACKAGIN d an NT G E IN NT HE: LP CO ROM T nce PU G RCH F fere A L n N IA RI RESE Co EC EE URING ERS SP GIN FEAT 16 PE 20 EN L RESOURC E NO. 7 JULY 2016 | VOL. 15 449 of Estimation of the S/G ratios used the lignins in three widely North American hardwoods BIOREFINERY R. Guilford, Daniel J. Nicholson, CandaceK. Bose, Adebukola B. Abiola, Samar and Raymond C. Francis W W W. TA P P I . ORG JOURNAL G INDUSTRI ES' TECHNICA THE PAPER AND PACKAGIN Y G L LO IA O EC HN NT SP EC TE T N O N CO A N Commissioning brownstock washing controls for an evaporator limited mill Ricardo B. Santos and 358 SPECIAL FEATURE to drive Research pathways and outreach cellulosic nanomaterials development Kathleen M. Bennett CELLULOSE NANOCRYSTA LS Peter W. Hart Stephanie Beck and Jean Bouchard Pulliainen, Pasi Niemeläinen, Martti Luukkainen Jarmo Kahala, and Sampo 479 Effects of added materials black liquor combustion Liming Zhao, Danielly Cortes, on and Honghi Tran CORROSION & MATERIALS 375 and A comparative study of enzymatic to a birch kraft Fenton pretreatment applied in a pilot scale pulp used for MFC production high-pressure homogenizer CELLULOSE NANOCRYSTA 467 root Corrosion monitoring and solids cause identification in high concentrators RECOVERY CYCLE 363 cellulose Ionic strength control of sulfated nanocrystal suspension viscosity ltén, Magnus Pia Hellström, Anette Heijnesson-Hu and Ulf Germgård Paulsson, Helena Håkansson, CORROSION & MATERIALS 491 Evaluation of near-drum thinning data in recovery boiler generating bank tubes W.B.A. (Sandy) Sharp NO. 6 JUNE 2016 | VOL. 15 MICROFIBRILLATED CELLULOSE 459 PROCESS CONTROL L RESOURC E and W.A. (Billy) Jones LS 383 thermal behavior Critical discussion on the of sulfated cellulose nanocrystals Mauran, Gregory Chauve, Damien Bouchard Carole Fraschini, and Jean 395 PAPERMAKING on Effects of cellulosic nanofibrils papers fine papermaking properties of A. Paradis, Donna A. Johnson, Mark Crossley, Michael Bilodeau, Bruce Gélinas Marc Foulger, and Pierre MICRO & NANOFIBRILL CELLULOSE ATED 405 of complex Rheological investigation cellulose (MNFC) micro and nanofibrillated flow curves suspensions: Discussion of and gel stability Schoelkopf, Michel Schenker, Joachim Gane Patrice Mangin, and Patrick CELLULOSE NANOFIBRILS 419 time Effects of mechanical fibrillation by disk grinding on the properties of cellulose nanofibrils Qianqian Wang and J.Y. Zhu HEALTH & SAFETY 425 Toward cellulose nanomaterial gap analysis commercialization: Knowledge to the for Safety Data Sheets according Globally Harmonized System D. Ede, J. Ong, James Jo Anne Shatkin, Kimberly and Michael Goergen Theodore H. Wegner, TJ SUMMARIES THE PAPERS SUMMARIZED HERE are from the June 2016 issue of TAPPI Journal featuring special nanotechnology content, along with the July 2016 issue featuring special content from the 2015 PEERS Conference. TAPPI Journal is an online publication of relevant and timely peer-reviewed research delivered via email and free to all TAPPI members. To receive TAPPI Journal, join TAPPI at www.tappi.org. JUNE CELLULOSE NANOCRYSTALS Critical discussion on the thermal behavior of sulfated cellulose nanocrystals Gregory Chauve, Damien Mauran, Carole Fraschini, and Jean Bouchard Cellulose nanocrystals (CNCs) have evolved from a laboratory curiosity to an industrial material manufactured at a scale of up to 1 ton/day. In order to maximize their use in various applications such as composites, it is critical to evaluate the influence of the surface chemistry on their thermal stability. Temperature is heavily damaging to the material integrity of native CNCs, but the early stage temperaturecatalyzed degradation process can be prevented by neutralization of the surface sulfate half-ester groups, either by organic or inorganic counterions. In addition, the researchers studied the influence of the hydrolysis conditions on the CNCs' resistance to elevated temperatures. The observations were carried out by thermogravimetric analysis (TGA). Finally, we present complementary work regarding color formation when CNCs are exposed to heat. Our aim was to combine various approaches and propose a method for the determination of precise and accurate values of thermal stability when working with cellulosic nanocrystals. CNC discoloration from heat exposure is of concern due to undesirable appearance of natural-fiber reinforced polymer end product. 58 Paper360º SEPTEMBER/OCTOBER 2016 MICROFIBRILLATED CELLULOSE A comparative study of enzymatic and Fenton pretreatment applied to a birch kraft pulp used for MFC production in a pilot scale high-pressure homogenizer Pia Hellström, Anette Heijnesson-Hultén, Magnus Paulsson, Helena Håkansson, and Ulf Germgård Microfibrillated cellulose (MFC) was produced in pilot scale from a bleached birch (Betula verrucosa) kraft pulp that was pretreated with either Fenton's reagent or with a combined mechanical and enzymatic method used at the Centre Technique du Papier (CTP). Researchers then monitored the change in fiber fibrillation during the homogenization treatment. The Fenton pretreatment resulted in MFC suspensions that contained a high amount of small sized elements. After five passes through the high-pressure homogenizer, the amount of particles smaller than 20 µm was 37 percent for the Fenton pretreated MFC compared to 13 percent for the enzymatically (endoglucanase) pretreated MFC. Altogether, the Fenton pretreatment enabled preparation of MFC with a higher degree of fibrillation after the same number of passes through the high-pressure homogenizer. Another option is to produce MFC of the same amount of fibrillation as after an enzymatic stage, but at significantly lower energy consumption. Fenton pretreatment may be used as an alternative to enzymatic hydrolysis in the production of MFC and give an opportunity to further reduce the energy demand or produce a product with higher amount of small sized elements. Scanning electron microscope images of enzyme (A) and Fenton (B) pretreated birch kraft pulp after five passes through the high-pressure homogenizer. MICRO & NANOFIBRILLATED CELLULOSE Rheological investigation of complex micro and nanofibrillated cellulose (MNFC) suspensions: Discussion of flow curves and gel stability Michel Schenker, Joachim Schoelkopf, Patrice Mangin, and Patrick Gane Micro and nanofibrillated cellulose in aqueous suspension presents many challenges when considering its use in forming nanocomposites. The inclusion of filler particles either as extender or as functional additive allows the range of strength and deformation properties to be extended. These properties, however, are linked in many cases to the rheological properties of the raw material mix. Interactions under dynamic shear or under controlled stress at low amplitude reveal the potential to generate functional interactions, not only between the cellulose components themselves, but also between the cellulose and polymer additives, as well as surface-modified pigment fillers. www.tappi.org http://WWW.TAPPI.ORG http://WWW.TAPPI.ORG http://www.tappi.org http://www.tappi.org

Table of Contents for the Digital Edition of Paper360 - September/October 2016

Setpoint
Over the Wire
Agenda 2020 Launches ‘Roadmaps’ to Efficiency, Sustainability, and New Product Goals
RBI: Transforming to Meet the Industry’s Research Needs
Paper Schools: Forging the Future
PPI Top 100
RISI’s Latin American CEO of the Year
Automation Upgrade Helps Sappi Gratkorn Perform
Innovative Direct Drive in a Turnkey-rebuilt Project
Klingele Papierwerke Saves Money, ‘Foils’ Stickies
TAPPI Journal Summaries
Life Cycle of the US Paper Industry
TAPPI News
ASPI News
Index of Advertisers
Paper360 - September/October 2016 - bellyband1
Paper360 - September/October 2016 - bellyband2
Paper360 - September/October 2016 - cover1
Paper360 - September/October 2016 - cover2
Paper360 - September/October 2016 - 3
Paper360 - September/October 2016 - 4
Paper360 - September/October 2016 - 5
Paper360 - September/October 2016 - Setpoint
Paper360 - September/October 2016 - 7
Paper360 - September/October 2016 - Over the Wire
Paper360 - September/October 2016 - 9
Paper360 - September/October 2016 - 10
Paper360 - September/October 2016 - 11
Paper360 - September/October 2016 - 12
Paper360 - September/October 2016 - 13
Paper360 - September/October 2016 - Agenda 2020 Launches ‘Roadmaps’ to Efficiency, Sustainability, and New Product Goals
Paper360 - September/October 2016 - 15
Paper360 - September/October 2016 - 16
Paper360 - September/October 2016 - 17
Paper360 - September/October 2016 - 18
Paper360 - September/October 2016 - 19
Paper360 - September/October 2016 - RBI: Transforming to Meet the Industry’s Research Needs
Paper360 - September/October 2016 - 21
Paper360 - September/October 2016 - 22
Paper360 - September/October 2016 - 23
Paper360 - September/October 2016 - Paper Schools: Forging the Future
Paper360 - September/October 2016 - 25
Paper360 - September/October 2016 - 26
Paper360 - September/October 2016 - 27
Paper360 - September/October 2016 - 28
Paper360 - September/October 2016 - PPI Top 100
Paper360 - September/October 2016 - 30
Paper360 - September/October 2016 - 31
Paper360 - September/October 2016 - 32
Paper360 - September/October 2016 - 33
Paper360 - September/October 2016 - 34
Paper360 - September/October 2016 - 35
Paper360 - September/October 2016 - 36
Paper360 - September/October 2016 - 37
Paper360 - September/October 2016 - RISI’s Latin American CEO of the Year
Paper360 - September/October 2016 - 39
Paper360 - September/October 2016 - 40
Paper360 - September/October 2016 - 41
Paper360 - September/October 2016 - 42
Paper360 - September/October 2016 - 43
Paper360 - September/October 2016 - 44
Paper360 - September/October 2016 - 45
Paper360 - September/October 2016 - Automation Upgrade Helps Sappi Gratkorn Perform
Paper360 - September/October 2016 - 47
Paper360 - September/October 2016 - 48
Paper360 - September/October 2016 - 49
Paper360 - September/October 2016 - Innovative Direct Drive in a Turnkey-rebuilt Project
Paper360 - September/October 2016 - 51
Paper360 - September/October 2016 - 52
Paper360 - September/October 2016 - 53
Paper360 - September/October 2016 - Klingele Papierwerke Saves Money, ‘Foils’ Stickies
Paper360 - September/October 2016 - 55
Paper360 - September/October 2016 - 56
Paper360 - September/October 2016 - 57
Paper360 - September/October 2016 - TAPPI Journal Summaries
Paper360 - September/October 2016 - 59
Paper360 - September/October 2016 - 60
Paper360 - September/October 2016 - 61
Paper360 - September/October 2016 - Life Cycle of the US Paper Industry
Paper360 - September/October 2016 - 63
Paper360 - September/October 2016 - 64
Paper360 - September/October 2016 - 65
Paper360 - September/October 2016 - TAPPI News
Paper360 - September/October 2016 - 67
Paper360 - September/October 2016 - ASPI News
Paper360 - September/October 2016 - 69
Paper360 - September/October 2016 - Index of Advertisers
Paper360 - September/October 2016 - cover3
Paper360 - September/October 2016 - cover4
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