Nordic Pulp & Paper Research Journal (NPPRJ) - Contents of Volume 32, 2017, Issue No. 2


The international research journal on sustainable utilization of forest bioresources

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Contents of Nordic Pulp & Paper Research Journal

Nordic Pulp & Paper Research Journal (NPPRJ) is an international scientific magazine covering science and technology for the areas of wood or bio-mass constituents, pulp and paper and including new fiber-based materials, recovery and by-products from pulping processes, bio-refining and energy issues. Articles meeting required scientific standards are accepted from any continent.

The latest issue of NPPRJ includes the articles as shown in the Table of Contents below.

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Open Access: Articles not available through Gold Open Access may be purchased by credit card as a pdf file, to be downloaded within 24 h after ordering, at a price of 22 EUR per article. (Value added tax may apply depending on your location, which you enter at payment logout.) Such articles have Green Open Access, i.e. authors may share articles on their personal non-commerical homepage immediately after publication on the website and download them to non-commercial hosting platforms one year after publication in a full issue of NPPRJ.

Contents of Volume 32, 2017, Issue No. 2

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PRINTING

The Evaluation of Experimental Cationic Polyvinyl Alcohol Containing Inkjet Coating Colors replaced by Calcium Carbonate

162

Jae Y. Shin and Paul D. Fleming

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BIOREFINERY

Characterization of cellulose nanocrystal obtained from electron beam treated cellulose fiber

170

Le Van Hai and Yung Bum Seo

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PAPER PHYSICS

Viability and properties of roll-to-roll coating of cellulose nanofibrils on recycled paperboard

179

Vegar Ottesen, Vinay Kumar, Martti Toivakka, Gary Chinga-Carrasco, Kristin Syverud and Øyvind Weiby Gregersen

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MECHANICAL PULPING

The use of TAED in the last phase of CMP peroxide bleaching

189

Farhad Zeinaly, Ali Kazemi Tabrizi, Jalal Shakhes and Nooshin Zeinali

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COATING

The effect of different wear on superhydrophobic wax coatings - OPEN ACCESS

195

Louise Ovaskainen, Pontus Olin, Mikko Tuominen, Torbjörn Pettersson and Lars Wågberg

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MECHANICAL PULPING

Mill evaluation of an intensified mechanical pulping process - OPEN ACCESS

204

Christer Sandberg, Jan-Erik Berg and Per Engstrand

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COATING

Improving the optical performance of the nanostructured starch-calcium carbonate hybrid pigments

211

Jonna Kuusisto and Thad C. Maloney

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PRINTING

Roll-to-roll manufacturing of disposable surface-enhanced Raman scattering (SERS) sensors on paper based substrates

222

Jarkko J. Saarinen, Dimitar Valtakari, Simon Sandén, Janne Haapanen, Turkka Salminen, Jyrki M. Mäkelä and Jun Uozumi

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PAPER PHYSICS

Effect of the ratio of softwood kraft pulp to recycled pulp on formation and strength efficiency in twin-wire roll forming - OPEN ACCESS

229

Bengt Nordström and Lennart Hermansson

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PRINTING

Development of a paper-based sensor for the qualitative and quantitative detection of Cu2+ in water

237

Yinchao Xu and Toshiharu Enomae

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PAPER CHEMISTRY

Improved microscopy method for morphological characterisation of pulp fines

244

Melanie Mayr, Rene Eckhart and Wolfgang Bauer

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MECHANICAL PULPING

CTMP Process Optimization Part II: Reliability in Pulp and Handsheet Measurements

253

Anders Karlström and Jan Hill

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Abstract:

The objective of this investigation is to analyze and model pulp and handsheet properties using two different approaches based on a reduced set of binomial coefficients for small data sets and constrained linear functions for larger data sets.
The properties are linked to process data from the daily CTMP operation in a CD-82 refiner. From a laboratory test program perspective, the test series was extensive and covered 80 pulp samples at different process conditions.
In this paper, external variables (dilution water feed rate, specific energy and plate clearance) are compared with internal variables (consistency and fiber residence time) as predictors.
It is shown that internal variables as predictors seem to outperform the external variables when estimating CSF Freeness, sheet density, tensile strength, tensile index, elongation to rupture, tensile energy absorption, tensile energy absorption index, tensile stiffness, tensile stiffness index, tear strength, tear index, short-span compressive test index, ISO brightness, Scott-Bond, Z-strength, shives(≥ 0.3mm), long fibers and fines.
It is important to cover all important dynamics to select the best possible models. Here, the absolute differences between the measured and estimated pulp and handsheet properties are ranked in ascending order, followed by a selection procedure before the polynomial fitting. Moreover, three different sets of chip mixtures were analyzed, and the results shown in this paper indicate that only one model is required for each pulp and handsheet property when using internal variables as predictors.
Finally, at a given threshold of shives, it is shown that both Scott-Bond and sheet density can be optimized by changing the consistency and fiber residence time in the refining zones individually. This opens for implementation of new control strategies based on soft sensors.

MECHANICAL PULPING

CTMP Process Optimization Part III: On the Predicition of Scott-Bond, Z-strength and Tensile index

266

Anders Karlström and Jan Hill

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BIOREFINERY

Miniaturized determination of ash content in kraft lignin samples using oxidative thermogravimetric analysis

280

Fredrik Aldaeus, Anne-Mari Olsson and Jasna S. Stevanic

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RECYCLING

Using phospholipase to control natural stickies in old newspaper pulp and the reaction mechanism therein

283

Zhenghui Shen, Jicheng Pei and Fangdong Zhang

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PRINTING

Biodegradation of thermochromic offset prints

289

Marina Vukoje, Mirela Rožić, Snežana Miljanić and Suzana Pasanec Preprotić

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CHEMICAL PULPING

The Effect of Bulk Crystals on Sodium Salt Scaling in Black Liquor Evaporators

299

Erik Karlsson, Mathias Gourdon and Lennart Vamling

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PAPER CHEMISTRY

Effect of salt concentration in polyelectrolyte multilayering on properties of modified GCC and filled paper - OPEN ACCESS

309

Jegon Lee, Kyujeong Sim and Hye Jung Youn

| ABSTRACT | Full text: PDF |

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NPPRJ was founded by the Swedish Association of Pulp and Paper Engineers (SPCI) in 1986. From 2013 NPPRJ is owned by Mid Sweden University (MiUN), Sundsvall and run as a project by MiUn, Chalmers University of Technology, Karlstad University, Royal Institute of Technology, Swedish University of Agricultural Sciences, Norwegian University of Science and Technology, Aalto University, Åbo Akademi University, Lappeenranta University of Technology and University of Oulu. The website is managed by Foritec AB, Sweden.

Nordic Pulp & Paper Research Journal - Mid Sweden University, Holmgatan 10, SE-851 70 SUNDSVALL, SWEDEN, Phone: +46 (0)771-975000, info@npprj.se

ISSN (print) 0283-2631 | ISSN (online) 2000-0669