The effect of eucalypt pulp xylan content on its bleachability, refinability and drainability

Gomes, Valéria Juste; Longue, Dalton; Colodette, Jorge Luiz; Ribeiro, Robisnéa A.

doi:10.1007/s10570-013-0104-3

Cited by 16 publications

(9 citation statements)

References 18 publications

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“…The main reason for this has been suggested to be the holocellulose microstructural changes (Iwamoto et al 2008). Pulps with low levels of xylan tend to retain less water and thus have lower levels of water retention (Gomes et al 2014). The results suggest that DB had fewer hydroxyl groups in the fiber wall accessible for water.…”

Section: Resultsmentioning

confidence: 95%

“…The cellulose and xylose content of soda BP pulp is comparable to bleached kraft bagasse pulp published previously (Hassan et al 2011). The lower intrinsic viscosity and estimated degree of polymerization (DP) of BP were due to the presence of xylose, which has a lower DP than glucan (cellulose) (Gomes et al 2014).…”

Section: Resultsmentioning

confidence: 99%

“…The WRV is a combined property involving chemical effects (hemicelluloses content) and physical effects (fiber population, total pore volume and distribution of the capillaries) (Gomes et al 2014).…”

Section: Resultsmentioning

confidence: 99%

“…Different types of hemicellulose are well known to facilitate beating of pulp (Rydholm 1965;Bhaduri et al 1995;Gomes et al 2014). Hult et al (2003) reported that the higher the hemicellulose content, the fewer coalesced microfibrils are observed in the supernatant of homogenized pulp.…”

Section: Introductionmentioning

confidence: 99%

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The effect of xylan on the fibrillation efficiency of DED bleached soda bagasse pulp and on nanopaper characteristics

2014

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Xylan is the second most abundant polysaccharide and the most abundant hemicellulose component of soda bagasse pulp. In this study, bleached soda bagasse pulp (SB) and bleached bagasse dissolving pulp (DB) with varying amounts of xylan were fibrillated with a homogenization process. The produced fibrillated materials were used for making nanopaper structures. The surface, physical, mechanical and optical properties of the nanopaper were measured, and the effect of xylan was assessed. Laser profilometry (LP) and field emission scanning electron microscopy were applied to study the degree of the fibrillation. The pulp having the highest xylan content, SB, showed the highest yield of cellulose nanofibrils. Nanopaper produced from SB had a more consolidated structure than that produced from DB. Additionally, SB nanopaper yielded higher tensile strength, lower LP roughness, a higher barrier against oxygen and lower opacity. These results indicate a higher degree of fibrillation of the SB pulp compared to the DB pulp. Hence, the positive effect of xylan for facilitating the fibrillation of the starting pulp fibers was demonstrated.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effect of xylan on the fibrillation efficiency of DED bleached soda bagasse pulp and on nanopaper characteristics

2014

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“…Eucalyptus plantations aim to produce wood for various purposes, such as panels (Bal and Bektaº, 2014;Castro et al, 2014), cellulose (Gomes et al, 2014;Carvalho et al, 2015), energy (Zanuncio et al, 2013a, Zanuncio et al, 2014a, and lumber (Ananias et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

ANATOMICAL, ULTRASTRUCTURAL, PHYSICAL AND MECHANICAL WOOD PROPERTIES OF TWO-YEAR-OLD Eucalyptus grandis × Eucalyptus urophylla CLONES

et al. 2018

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-Eucalyptus wood from adult trees is used for several purposes; however, the wood of younger trees has limited use. This study aims to characterize and propose uses of two-year-old eucalyptus wood. Six two-year-old Eucalyptus grandis × Eucalyptus urophylla clones have been selected and their anatomical, ultrastructural, physical and mechanical wood characteristics evaluated. The wood of Clone A shows more robust fibers with better microfibril arrangement, resulting in better mechanical properties, and therefore, a better performance for structural use. Clone F showed a low variation of wood basic density in the radial direction, facilitating its machinability, and with the Clone B, showed a lower anisotropy, and therefore, the wood is recommended for locations with high variations of humidity. The heterogeneity of the wood characteristics of the evaluated clones confirms the need for further studies, to choose those most adequate to each use.

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Nanomaterials : An Advanced and Versatile Nanoadditive for Kraft and Paper Industries

Julkapli

Mansouri

2017

Handbook of Composites From Renewable Materials

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The effect of eucalypt pulp xylan content on its bleachability, refinability and drainability

Cited by 16 publications

References 18 publications

The effect of xylan on the fibrillation efficiency of DED bleached soda bagasse pulp and on nanopaper characteristics

The effect of xylan on the fibrillation efficiency of DED bleached soda bagasse pulp and on nanopaper characteristics

ANATOMICAL, ULTRASTRUCTURAL, PHYSICAL AND MECHANICAL WOOD PROPERTIES OF TWO-YEAR-OLD Eucalyptus grandis × Eucalyptus urophylla CLONES

Nanomaterials : An Advanced and Versatile Nanoadditive for Kraft and Paper Industries

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