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Article
Refining of bleached cellulosic pulps: characterization by application of the colloidal titration technique
The relation between freeness and the cationic demand of fibrous suspensions containing an industrial kraft hardwood bleached pulp (refined at different levels) is studied in this paper. The technique used was...
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Article
Control of retention in paper-making by colloid titration and zeta potential techniques
The concentration influence of some commercial polyethylenimines, used as retention agents, on the retention efficiency during the sheet formation is studied in this paper. The conditions of an industrial wire...
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Article
Effect of the combination of biobeating and NFC on the physico-mechanical properties of paper
The combined effect of enzymatic treatment (biobeating) and NFC addition on the mechanical and physical properties of a papermaking pulp suspension was investigated. The influence of pH, consistency of pulp an...
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Article
All-cellulose composites from unbleached hardwood kraft pulp reinforced with nanofibrillated cellulose
In the present work, nanofibrillated cellulose (NFC) from bleached eucalyptus pulp was prepared, characterized and used as reinforcement in an unbleached eucalyptus fiber matrix. First, the NFC was fabricated...
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Article
From paper to nanopaper: evolution of mechanical and physical properties
In the present work the evolution of physical and mechanical properties of papers and nanopapers is studied. Handsheets made of eucalyptus fibres reinforced with 0, 25, 50, 75 and 100 wt% of nanofibrillated ce...
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Article
Improvement of deinked old newspaper/old magazine pulp suspensions by means of nanofibrillated cellulose addition
During their recycling, cellulosic fibres suffer irreversible damage caused by repeated wetting and drying cycles, beating stages and bleaching reactions. This damage decreases the mechanical properties of the...
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Article
Suitability of wheat straw semichemical pulp for the fabrication of lignocellulosic nanofibres and their application to papermaking slurries
The present work studies the feasibility of wheat soda pulp as a raw material for the fabrication of cellulose nanofibres and their application as an additive in papermaking. Wheat straws were cooked under alk...
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Article
The feasibility of incorporating cellulose micro/nanofibers in papermaking processes: the relevance of enzymatic hydrolysis
Cellulose nanofiber (CNF) is becoming a topic of great interest among the industrial and academic communities, mainly due to their potential applications in very well-differentiated industrial sectors. Among t...
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Article
Remarkable increase of paper strength by combining enzymatic cellulose nanofibers in bulk and TEMPO-oxidized nanofibers as coating
Cellulose nanofibers (CNF) have been proposed by several authors as a reinforcing additive for papermaking pulps; their use allows one to avoid mechanical refining of pulp fibers, which damages the fibers and ...
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Article
Open AccessInfluence of pretreatment and mechanical nanofibrillation energy on properties of nanofibers from Aspen cellulose
The characteristics of cellulose nanofibers (CNFs) depend on many factors such as the raw material, type and intensity of the pre-treatment, and type and severity of the mechanical defibrillation process. The ...
