Lignocellulosic biomass from grapevines as raw material for particleboard production

Uploaded data presents results of research on mechanical and physical properties of particleboards made with the addition of pruned material from the grapevines – vine pruning waste.

The hypothesis of the study assumes that vine pruning waste may be successfully applied as an alternative feedstock in particleboard production.

The investigation included 8 variants:
A – particleboard with density 650 kg/m3, without particles from vine pruning;
B – particleboard with density 650 kg/m3, with 25% share of particles from vine pruning;
C – particleboard with density 650 kg/m3, with 50% share of particles from vine pruning;
D – particleboard with density 650 kg/m3, with 100% share of particles from vine pruning;
E – particleboard with density 550 kg/m3, without particles from vine pruning;
F – particleboard with density 550 kg/m3, with 25% share of particles from vine pruning;
G – particleboard with density 550 kg/m3, with 50% share of particles from vine pruning;
H – particleboard with density 550 kg/m3, with 100% share of particles from vine pruning.

The following mechanical properties of manufactured composites were tested: modulus of rapture (MOR) and modulus of elasticity (MOE) were tested based on the EN 310 standard; internal bound (IB) according to EN 319 standard, and physical properties of manufactured composites: thickness swelling and water absorption after 2 and 24 hours of soaking in water. Additionally susceptibility to drilling was tested. Each test was repeated at least 10 times.

The results revealed that the share of vine pruning waste is one of the main factors determining the strength properties of manufactured boards. It affected both the mat thickening process as well as the reduction of strength properties. The results showed that the 50% share of vine pruning waste enables the production of boards that meet the minimum requirements of strength properties specified in the EN 312 standard for boards with a density of 650 kg/m3. However, boards with a density of 550 kg/m3 entirely made with vine pruning waste met the minimum requirements of strength properties specified in the standard EN 16368. In addition, the share of pruned material reduces swelling and water absorption after 2 and 24 hours soaking in water. The share of vine pruning waste reduced axial forces during drilling.