Abstract
Wood is a natural smart material which possesses shape memory effect (SME). The paper deals with SME behaviour of sound and mycologically destroyed wood and shows the influence of cellulose, hemicelluloses, and lignin content on the wood ability to remember the temporary and to recover the permanent shapes. The research was carried out on sliced veneer samples (beech Fagus sylvatica L. and pine Pinus sylvestris L.) and rotten samples (pocket rot, brown rot) to reveal the influence of on the deformative conversions and quantities of SME. Results of research are shown that at moisture drop the higher values of strain fixity rate for all wood species and types of rot are noted (0.82 – 0.97). The more remarkable difference for sound and rotten wood is observed for strain recovery rate at temperature change. Despite the change of chemical composition for pocket rot the speed of recovery of permanent shape was almost the same as for sound wood. Results of this research can be used for the developing of new biocomposite materials based on wood.
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