School of Civil Engineering

SRK14

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Material description

Material ID: SRK14

Material type: Disc consisting of cellulose.

Polymer: Cellulose (98%)

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

 

Table 1. Estimated mass concentration of compounds.
CompoundMass Concentration (%)
Cellulose (-)98
Silicon (Si)1
Chlorine (Cl)1
Traces of iron (Fe)<1
Traces of potassium (K)<1
Traces of sulfur (S)<1
Traces of calcium (Ca)<1
Traces of titanium (Ti)<1
Traces of magnesium (Mg)<1

A. Material composition identification

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

Table 2. FTIR compound identification.
Identified Compounds
Cellulose (-)
...
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 (%)
Si1
Cl1
Fe<1
K<1
S<1
Ca<1
Ti<1
Mg<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)0.20
Oxidative (air)0.06
Table 4. Temperature and amplitude of main peaks in non-oxidative conditions.
Peak IDTemperature peak (°C)Amplitude of peak (°C-1)
Peak 13531.383 x 10-2
Table 5. Temperature and amplitude of main peaks in oxidative conditions.
Peak IDTemperature peak (°C)Amplitude of peak (°C-1)
Peak 13311.982 x 10-2
Peak 24468.32 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 .