Page 67 - Kutnar, Andreja, et al., eds., 2015. Proceedings of the 1st COST Action FP1307 International Conference - Life Cycle Assessment, EPDs, and modified wood. University of Primorska Press, Koper.

sibility
of
highly
durable
plywood
production
with
poplar
wood
as
a

substitute
of
tropical
species

Giacomo
Goli1,
Francesco
Negro2,
Corrado
Cremonini2,
Roberto
Zanuttini2,
Marco

Fioravanti1

1
GESAAF
-­‐
University
of
Florence,
Via
S.
Bonaventura,
13,
50145
Firenze
IT,

giacomo.goli@unifi.it
–
marco.fioravanti@unifi.it

2
DISAFA
–
University
of
Turin.
Largo
Paolo
Braccini,
2,
10095
Grugliasco
IT,

francesco.negro@unito.it
-­‐
corrado.cremonini@unito.it
-­‐
roberto.zanuttini@unito.it

Keywords:
Poplar,
Plywood,
Durability,
Heat
treatment,
Mechanical
properties

Naturally
durable
tropical
species
such
as
Okoumè
(Aucoumea
klaineana
Pierre)
are
used
for
the

production
of
plywood
in
highly
demanding
environments.
The
use
of
these
species
could
result

in
environmental
risks
and
high
impact
operations
in
tropical
forests
and
soils.
In
this
work
the

feasibility
of
the
production
of
plywood
panels
using
local
fast
growing
species
with
durability

enhanced
by
heat
treatment
is
analysed.

The
heat
treatment
was
performed
on
poplar
(Populus
sp.,
I-­‐214
euro-­‐american
clone)
veneers
to

be
glued
after
heat
treatment
(post)
and
on
panels
glued
before
heat
treatment
(pre)
both
with

melamine-­‐urea-­‐formaldehyde
(MUF)
resins.
Veneers
and
panels
were
treated
at
180
°C
for
8

hours
with
a
dry
mass
loss
of
about
5
%.
Two
groups
of
untreated
and
treated
samples
are
shown

in
Figure
1.

Figure
1:

Heat
treated
(on
the
left)
and
untreated
samples
(on
the
right).

55