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Materials 2013, 6(10), 4532-4544; doi:10.3390/ma6104532

Obtaining and Utilizing Cellulose Fibers with in-Situ Loading as an Additive for Printing Paper

2,* , 3
1 Petru Poni" Institute of Macromolecular Chemistry, Al. Gr. Ghica Voda 41A, Iasi 700487, Romania 2 Faculty of Chemical Engineering and Environmental Protection, "Gheorghe Asachi" Technical University of Iasi, 73, D. Mangeron Blvd., Iasi 700050, Romania 3 Faculty of Agriculture, "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine of Iasi, 3, Mihail Sadoveanu Alley, Iasi 700490, Romania 4 Faculty of Land Reclamation and Environmental Engineering, University of Agronomic Sciences and Veterinary Medicine, 59 Mărăşti Blvd., Bucharest 011464, Romania
* Author to whom correspondence should be addressed.
Received: 31 July 2013 / Revised: 18 September 2013 / Accepted: 25 September 2013 / Published: 15 October 2013
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The goal of this study was to analyze the effects of cellulose fibers loading by precipitation in-situ of calcium carbonate over the properties of printing paper obtained from mixtures of the softwood and hardwood fibers. The effects of fibers with in-situ loading were analyzed comparatively with conventional paper loading respectively, by adding precipitated calcium carbonate into fiber stock. The effectiveness of the methods was evaluated by various analyses and investigations: calcium carbonate content, Scanning electron microscope (SEM) images, X-ray diffraction, optical and mechanical properties of the paper sheets. The evaluation of the effects on paper properties led to the conclusion that, at the same filler content, the in-situ loading method gives higher opacity and brightness than conventional methods. The utilization of cellulose fibers with in-situ loading as additive, shown as a modification of the ratio between fibers with in-situ loading and fibers without loading, regardless of whether they are softwood or hardwood fibers, allowed us to optimize printing paper properties, especially regarding the relationship between optical and strength properties.
Keywords: paper; conventional loading; calcium carbonate; mechanical properties; optical properties paper; conventional loading; calcium carbonate; mechanical properties; optical properties
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fortuna, M.E.; Harja, M.; Bucur, D.; Cimpeanu, S.M. Obtaining and Utilizing Cellulose Fibers with in-Situ Loading as an Additive for Printing Paper. Materials 2013, 6, 4532-4544.

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