SciELO - Scientific Electronic Library Online

vol.13 número2Fibre level modelling of free water behaviour during wood drying and wettingInclusion of the sorption hysteresis phenomenon in future drying models: Some basic considerations índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados


Maderas. Ciencia y tecnología

versão On-line ISSN 0718-221X


ZAHEDSHEIJANI, Reza; GHOLAMIYAN, Hadi; TARMIAN, Asghar  e  YOUSEFI, Hossein. Mass transfer in medium density fiberboard (MDF) modified by Na+ montmorillonite (Na+MMT) nanoclay. Maderas, Cienc. tecnol. [online]. 2011, vol.13, n.2, pp.163-172. ISSN 0718-221X.

The potential use of nanoclay was examined to modify fluid transfer properties of medium density fiberboard (MDF). For this, Na+ montmorillonite (Na+MMT) nanoclay was added to urea formaldehyde resin to produce MDF. Then, the air permeability and mass diffusivity of MDF were evaluated. Scanning electron microscope (SEM) images and X-ray diffraction (XRD) confirmed a dispersion and exfoliation of Na+MMT in the modified MDF. The air permeability presented a systematic decrease with increasing nanoclay amount. This reduction agreed with the simple ‘‘tortuous path’’ model. The nanoclay had no effect on the mass diffusivity.

Palavras-chave : Air permeability; mass diffusivity; medium density fiberboard; MDF; Na+MMT nanoclay.

        · texto em Inglês     · Inglês ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons