School of Civil Engineering

OTH02

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Material description

Material ID: OTH02

Material type: Wooden fibreboard bonded with resin.

Polymer: Cellulose and lignin (99%)

Additives (fire retardants, fillers or traces of inorganic elements): Calcium (1%), traces of other elements (<1%)

 

Table 1. Estimated mass concentration of compounds.
CompoundMass Concentration (%)
Cellulose and lignin (-)99
Calcium (Ca)1
Traces of chlorine (Cl)<1
Traces of potassium (K)<1
Traces of silicon (Si)<1
Traces of magnesium (Mg)<1
Traces of titanium (Ti)<1

A. Material composition identification

A.1 Attenuated total reflection – Fourier transform infrared spectroscopy (ATR-FTIR)

Table 2. FTIR compound identification.
Identified Compounds
Cellulose and lignin (-)
Resin (-)
...
Figure 1 . FTIR spectra: Absorbance percentage versus wavenumber from the sample.
...
Figure 2. FTIR spectra: Absorbance percentage versus wavenumber from the sample and the identified compounds.

A.2 Energy Dispersive X-Ray Fluorescence (EDXRF)

Table 2. Inorganic elements and their mass concentration identified with EDXRF.
ElementMass Concentration (%)
Ca1
Cl<1
K<1
Si<1
Mg<1
Ti<1
...
Figure 3. EDXRF spectra. Counts vs energy. Identified elements are shown as vertical lines.

B. Thermogravimetric analysis

Table 3. Mass fraction of residue after thermal decomposition.
ConditionFraction of mass residue at 800°C
Non-oxidative (nitrogen)0.21
Oxidative (air)0.01
Table 4. Temperature and amplitude of main peaks in non-oxidative conditions.
Peak IDTemperature peak (°C)Amplitude of peak (°C-1)
Peak 13638.19 x 10-3
Table 5. Temperature and amplitude of main peaks in oxidative conditions.
Peak IDTemperature peak (°C)Amplitude of peak (°C-1)
Peak 13308.54 x 10-3
Peak 24764.15 x 10-3
...
Figure 4. Normalised mass (solid line) and derivative of the normalised mass (dashed line) in 150 ml min-1 of nitrogen and a heating rate of 20°C min-1.
...
Figure 5. Normalised mass (solid line) and derivative of the normalised mass (dashed line) in 150 ml min-1 of air and a heating rate of 20°C min-1 .