Mechanical behavior of cellulose microfibrils in tension wood in relation with maturation stress generation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Biophysical Journal Année : 2006

Mechanical behavior of cellulose microfibrils in tension wood in relation with maturation stress generation

Résumé

A change in cellulose lattice spacing can be detected during the release of wood maturation stress by Synchrotron X-ray diffraction experiment. The lattice strain was found to be the same order of magnitude as the macroscopic strain. The fiber repeat distance, 1.033 nm evaluated for tension wood after the release of maturation stress was equal to the conventional wood values, while the value before stress release was larger, corresponding to a fiber repeat of 1.035 nm, nearly equal to that of cotton and ramie. Interestingly, the fiber repeat varied from 1.033 nm for wood to 1.040 nm for algal cellulose, with an increasing order of lateral size of cellulose microfibrils so far reported. These lines of experiments demonstrate that, before the stress release, the cellulose was in a state of tension, which is, to our knowledge, the first experimental evidence supporting the assumption that tension is induced in cellulose microfibrils.
Fichier principal
Vignette du fichier
biophysj.105.078485v1.pdf (824.28 Ko) Télécharger le fichier
Loading...

Dates et versions

hal-00112572 , version 1 (09-11-2006)

Identifiants

Citer

Bruno Clair, Tancrède Alméras, Hiroyuki Yamamoto, Takashi Okuyama, Junji Sugiyama. Mechanical behavior of cellulose microfibrils in tension wood in relation with maturation stress generation. Biophysical Journal, 2006, 91 (3), pp.1128-1135. ⟨10.1529/biophysj.105.078485⟩. ⟨hal-00112572⟩
130 Consultations
221 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More