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Title: Comparative characterization of eucalyptus fibers and softwood fibers for tissue papers applications
Authors: Morais, Flávia P.
Bértolo, Raquel A. C.
Curto, Joana M. R. 
Amaral, Maria E. C. C.
Carta, Ana M. M. S.
Evtyugin, Dmitry V.
Keywords: Absorption; Cellulose fiber materials; Pulp fiber morphology; Softness; Tissue papers
Issue Date: 2019
Project: Project InPaCTus – Innovative Products and Technologies from eucalyptus, Project Nº 21 874 funded by Portugal 2020 through European Regional Development Fund (ERDF) in the frame of COMPETE 2020 nº 246/AXIS II/2017 
Serial title, monograph or event: Materials Letters: X
Volume: 4
Abstract: Significative growth and demanding for premium tissue products, in which softness and absorbency are key consumer requests, pointed out the need for the establishment of relations between fiber properties and tissue paper properties. For this purpose, an experimental plan was designed using a representative group of pulp fibers, six hardwood, and six softwood, for the production and characterization of low basis weight paper structures (20 g/m2). The pulp fibers morphology and chemical content were evaluated, and hardwoods showed lower fiber length (0.70–0.84 vs 1.57–1.96 mm), coarseness (6.71–9.56 vs 16.77– 19.66 mg/100 m) and higher pentosan content (6.3–21.1 vs 7.6–10.3%). Even though the paper structures were produced with the same basis weight, they presented a broad range for bulk (3.46–8.04 cm3/g), tensile index (2.00–11.45 N.m/g), softness (65.7–86.9) and absorption capacity (8.08–9.48 g/g). The results indicated that softness was directly influenced by structural properties, increasing with bulk, while tensile strength correlated inversely. Therefore, the correlations obtained were used to identify the most suitable pulp fibers properties for each type of tissue paper.
ISSN: 25901508
DOI: 10.1016/j.mlblux.2019.100028
Rights: openAccess
Appears in Collections:I&D CIEPQPF - Artigos em Revistas Internacionais

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