title: Use of glass transition temperature for stabilization of board's cracks of Eucalyptus grandis.
abstract: The Eucalyptus grandis logs temperatures were determined and correlated with the board's cracks during steaming. Thermocouples were inserted in the logs center, registering their temperatures during steaming at 90°C. The logs were sawed and the board's cracks measured. It was concluded that: (1) the logistic S-shaped curve explains the logs temperature variation; (2) the logs with diameter of 20 to <25, 25 to <30 and 30 to <35 cm presented, respectively, 84.2°C, 73.1°C and 45.8°C in the steaming; and (3) the cracks lengths significantly decreased in logs that reached the glass transition temperature.
authors.affiliation: Faculdade de Ciências Agronômicas, UNESP, Departamento de Recursos Naturais/Ciências Florestais, Botucatu, SP, Brazil. fwcalonego@fca.unesp.br
authors.forename: Fred W
authors.initials: FW
authors.lastname: Calonego
authors.forename: Elias T D
authors.initials: ET
authors.lastname: Severo
authors.forename: Antonio R
authors.initials: AR
authors.lastname: Cunha
authors.forename: Daiane C
authors.initials: DC
authors.lastname: Gaia
mesh_terms: D005052:Eucalyptus; D005898:Glass; D008962:Models, Theoretical; D044366:Transition Temperature; D014835:Volatilization; D014934:Wood