Transcript Slide 1

LIGNIN UTILISATION AS BONDING MATERIAL FOR
PLYWOOD PANELS
8 October 2013, Trabzon, Turkey
E. Papadopoulou, S. Kountouras, T. Sevastiadis Z. Nikolaidou, E. Roumeli, K. Chrissafis
BICORE: Biocommodities refinery
Use of chemistry and biotechnology to produce various materials and products
(2nd generation fuels, resins, polymers, surfactants, food ingredients).
CIMV Biolignin™: Chemical structure
CIMV lignin composed of
linear polymers
Condensation reaction of PFL polymer
Polymerization reaction takes place within some hours at a temperature of about 95-100°C.
The polymerisation is stopped by cooling when the target viscosity is reached.
FTIR of lignin based resins
PFGL50
GL
PF std
100
1640 cm -1
1386 cm -1
Transmittance, %
80
60
PF std.
Lignin
40
20
0
800
PFL resin
1000
1200
1400
1600
1800
2000
Wavenumber cm-1
1386cm-1 = phenolic OH groups
1640cm-1 = vibration of aromatic compounds. It signifies the reaction between
aldehyde and phenol/lignin adduct.
Plywood panels testing & evaluation
Requirements of the EN314.2 standard
Shear strength test
Free formaldehyde emissions: CARB II rule = 0.05ppm
According to CARB rule:
0.04ppm (ASTM E1333) corresponds to 0.3mg/L (F****
as per JIS A1460)
Wood failure test
Testing results of PW with PFGL resins
(CIMV Glyoxalated lignin)
Sub. Level, %
Phenol-Form.
PF std
20-7
FF, Desiccator,
mg/L
50-0
60-23
70-28
1.19
1.79
1.30
1.27
1.37
1.25
0.92
95
100
100
92
80
80
40
33
4h boiling - 16h drying at 60°C- 4h in boiling water - 1h in cool water
1.83
1.04
1.62
1.25
1.32
1.93
1.28
0.87
90
100
95
90
75
80
35
30
72h in boiling water- cooling in water for 1h
Pre-treatment 5.1.4:
Shear strength,
N/mm2
Wood failure,
%
50-19
2.03
Pre-treatment 5.1.3:
Shear strength,
N/mm2
Wood failure,
%
40-15
Immersion in water of 20°C for 24h
Pre-treatment 5.1.1:
Shear strength,
N/mm2
Wood failure,
%
30-10
1.71
0.86
1.48
1.04
1.02
1.54
0.98
0.76
100
100
95
95
75
80
40
30
0.277
0.068
0.085
0.080
0.048
0.054
0.054
0.040
Conclusions
•
The BIOCORE lignin samples can give resins with adhesion performance
comparable to that of a standard PF.
•
Phenol substitution levels up to 70% can be achieved with good results.
•
Plywood panels produced with PFGL resin having up to 60-23 sub. Level of Ph.F, can be classified as of class 3 panels (non covered - exterior use) .
•
All plywood panels produced fulfill CARB II rule for free formaldehyde
emissions.
•
The new resins are less harmful for the environment and the people, while
offer a solution for more sustainable products.
CHIMAR HELLAS is a Greek SME, provider of:
innovative industrial technology for the resin and wood-based panel industries in all
continents.
customer focused R&D, technical support, advanced training, testing and
evaluation services
plants for producing formaldehyde, UFC, resins, impregnation syrups and additives
value-added services (quality management systems, industrial property rights
protection, accredited lab testing)
24 people, 35 years expertise, technology
applied in more than 70 industrial plants
located in more than 37 countries.
Contact Details
Electra Papadopoulou
Senior Researcher, R&D Department
Sofouli 88, 55131 Thessaloniki, GREECE
Acknowledgements
To the EU FP7 because this work has
been carried out with the European
Commission economic support
(contract no FP7-241566).
Tel: +30 2310 424167
Fax: +30 2310 424149
e-mail: [email protected]
www.chimar-hellas.com