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Characterization of Manmade and Recycled Cellulosic Fibers for Their Application in Building Materials

Journal of renewable materials, 2019-01, Vol.7 (11), p.1121-1145

2019. This work is licensed under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2164-6325 ;ISSN: 2164-6341 ;EISSN: 2164-6341 ;DOI: 10.32604/jrm.2019.07556

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Title:
Characterization of Manmade and Recycled Cellulosic Fibers for Their Application in Building Materials
Author: Stevulova, Nadezda ; Hospodarova, Viola ; Estokova, Adriana ; Singovszka, Eva ; Holub, Marian ; Demcak, Stefan ; Briancin, Jaroslav ; Geffert, Anton ; Kacik, Frantisek ; Vaclavik, Vojtech ; Dvorsky, Tomas
Subjects: Absorptivity ; Bleaching ; Building materials ; Calcite ; Capillary water ; Cellulose ; Cellulose fibers ; Chemical composition ; Compressive strength ; Compressive Strength Of Mortars ; Construction materials ; Crystal structure ; Crystallinity ; Degree of polymerization ; Fiber Properties Characterization ; Fibers ; Fillers ; Heterogeneity ; Impurities ; Kaolinite ; Mortars (material) ; Paperboard ; Papermaking ; Physical properties ; Polymerization ; Porosity ; Pulp ; Purity ; Recycled materials ; Surface roughness ; Thermal conductivity ; Waste Paper ; Water absorption ; Wood ; Wood Pulp
Is Part Of: Journal of renewable materials, 2019-01, Vol.7 (11), p.1121-1145
Description: The aim of this study was to characterize two types of cellulosic fibers obtained from bleached wood pulp and unbleached recycled waste paper with different cellulose content (from 47.4 percent up to 82 percent), to compare and to analyze the potential use of the recycled fibers for building application, such as plastering mortar. Changes in the chemical composition, cellulose crystallinity and degree of polymerization of the fibers were found. The recycled fibers of lower quality showed heterogeneity in the fiber sizes (width and length), and they had greater surface roughness in comparison to high purity wood pulp samples. The high purity fibers (cellulose content > 80.0 percent) had greater crystallinity and more homogeneous and smooth surfaces than the recycled fibers. The presence of calcite and kaolinite in all of the recycled cellulosic fibers samples was confirmed, whereas only one wood pulp sample contained calcite. The influence of the chemical composition was reflected in the fiber density values. Changes in the chemical composition and cellulose structure of the fibers affected the specific surface area, porosity and thermo physical properties of the fibers. More favorable values of thermal conductivity were reached for the recycled fibers than for the wood pulp samples. Testing the suitability of the recycled fibers with inorganic impurities originating from the paper-making processes for their use as fillers in plastering mortars (0.5 wt.% fiber content of the total weight of the filler and binder) confirmed their application by achieving a compressive strength value of 28 day-cured fiber-cement mortar required by the standard as well as by measured more favorable value of capillary water absorption coefficient.
Publisher: Henderson: Tech Science Press
Language: English
Identifier: ISSN: 2164-6325
ISSN: 2164-6341
EISSN: 2164-6341
DOI: 10.32604/jrm.2019.07556
Source: ProQuest Central

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Characterization of Manmade and Recycled Cellulosic Fibers for Their Application in Building Materials

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