Peeler core and slabwood fibre properties for<i> Pinus</i><i> radiata</i> D.Don pulp production

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dc.contributor.authorElissetche, Juan Pedro
dc.contributor.authorApiolaza, Luis A.
dc.contributor.authorAlzamora, Rosa M.
dc.contributor.authorSoto, Luis O.
dc.contributor.authorLasserre, Jean Pierre
dc.date.accessioned2025-01-20T17:08:49Z
dc.date.available2025-01-20T17:08:49Z
dc.date.issued2024
dc.description.abstractBackground: Pulp production based on Pinus radiata D.Don is constantly improving the value recovery of logs. One example is using the peeler cores and slabwood derived from sawing and peeling processes to produce pulp. However, these two raw materials have not been characterised for their fibre properties. Methods: We report on four wood fibre quality attributes derived from peeler cores and slabwood, directly influencing pulp quality and pulping process: fibre length (mm), fibre width (gm), fines content (%), and coarseness (gg/m). This pilot study sampled two P. radiata stands grown on different sites and early silvicultural regimes in the Araucania Region of Chile. Analysis of wood fibre consisted of three trees per stand, and six discs per tree: two at the bottom, two at breast height (1.3 m), and the last two at 5.23 m height. Results: The trajectory of mean annual increment in diameter at breast height (MAI) and periodic annual increment in diameter at breast height (PAI) for trees in the two stands aligned with their respective site qualities and silvicultural regimes. In Stand 1, with a site index of 36, and Stand 2, with a site index of 31, the average proportions of juvenile wood (measured at 1.3 m) were 50% and 53%, respectively. Thus, despite weed control and fertiliser application in Stand 1, there was no increase observed in the proportion of juvenile wood. There were significant differences in fibre properties between peeler core and slabwood, and these differences were present across the range of tree heights and diameters (p<0.05). While there were no statistically significant differences among disc positions, significant distinctions emerged between stands and wood types. The interaction between these factors was also found to be statistically significant (p<0.05). Conclusions: Our study suggests that adding these two materials into the mix for producing pulp would have positive implications due to pulp from peeler core is more suitable for printing and writing grades and addition of mature wood from slabwood, could improve strength properties of paper manufacture. However, it is necessary to test the optimal proportion for the final mix.
dc.description.funderChilean National Commission for Scientific and Technological Research
dc.fuente.origenWOS
dc.identifier.doi10.33494/nzjfs542024x268x
dc.identifier.eissn1179-5395
dc.identifier.issn0048-0134
dc.identifier.urihttps://doi.org/10.33494/nzjfs542024x268x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90986
dc.identifier.wosidWOS:001167428300001
dc.language.isoen
dc.revistaNew zealand journal of forestry science
dc.rightsacceso restringido
dc.subjectPinus radiata
dc.subjectfibre properties
dc.subjectwood quality
dc.subjectpeeler core
dc.subjectslabwood
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titlePeeler core and slabwood fibre properties for<i> Pinus</i><i> radiata</i> D.Don pulp production
dc.typeartículo
dc.volumen54
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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