Plywood made from plasma-treated veneers: melamine uptake, dimensional stability, and mechanical properties

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 3 Mechanical properties of plywood made of unmodified beech veneers impregnated with 25% melamine solution (± = standard deviation)

Sample	Direction	Compressive strength (N mm⁻²)	Tensile strength		Bending strength
Sample	Direction	Compressive strength (N mm⁻²)	σM^a (N mm⁻²)	MOE (kN mm⁻²)	MOR (N mm⁻²)	MOE (kN mm⁻²)
Reference⁰	Parallel	38 ± 2	82 ± 7	9.3 ± 1.1	136 ± 12	12.1 ± 1.2
Reference⁰	Perpendicular	51 ± 2	94 ± 9	11.3 ± 1.6	60 ± 3	4 ± 0.4
Reference	Parallel	40 ± 3	74 ± 5	7.4 ± 0.5	120 ± 13	13.8 ± 1.1
Reference	Perpendicular	47 ± 3	93 ± 7	11.1 ± 0.6	59 ± 5	4.3 ± 0.2
Plasma	Parallel	40 ± 2	65 ± 10	8 ± 1.1	137 ± 12	15.1 ± 0.9
Plasma	Perpendicular	51 ± 3	90 ± 9	10.8 ± 0.9	61 ± 4	4.4 ± 0.3