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Items for "helium pycnometry"

Dimensional changes in Corsican pine (Pinus nigra Arnold) modified with acetic anhydride measured using a helium pycnometer

Helium pycnometry was used to determine the changes in volume of wood samples of Corsican pine following modification with acetic anhydride...

Keywords: acetylation, dimensional change, helium pycnometry, Pinus nigra, wood modification

08/2004 | Holzforschung, Walter de Gruyter
Changes in the cell wall volume of a number of wood species due to reaction with acetic anhydride

A number of softwoods and hardwoods (beech, rubberwood, Corsican pine, Korean pine) were reacted with acetic anhydride to a variety of weight percentage gain (WPG) values and the volume change due to reaction was determined both by measurement of the external dimensions and by helium pycnometry...

Keywords: acetylation, helium pycnometry, Molar Volume, void volume, volume change

03/2007 | Holzforschung, Walter de Gruyter