21 Applications of NIR Techniques in Polymer Coatings …
509
Normalized Intensity
Wavelength [nm]
2.4%
3.1%
4.3%
7.0%
8.1%
11.1%
1400
1500
1600
1700
1800
1900
0.0
0.2
0.4
0.6
0.8
1.0
Fig. 21.19 NIR spectra of PA fabric finished with a flame retardant containing various amounts
of residual moisture. Spectra were normalized to the double peak of the C-H overtone peak at
1720/1750 nm
0
2
4
6
8
10
12
0
2
4
6
8
10
12
RMSEC=0.4 %
BIAS=5E-5 %
SEC=0.4 %
RMSEP=0.5 %
BIAS=0.2 %
SEP=0.5 %
R²= 98.2 %
r²=0.991
Moisture Content (NIR) [wt%]
Moisture Content (Gravimetry) [wt%]
Fig. 21.20 PLS calibration to the moisture content of PA fabrics finished with a flame retardant
509
Normalized Intensity
Wavelength [nm]
2.4%
3.1%
4.3%
7.0%
8.1%
11.1%
1400
1500
1600
1700
1800
1900
0.0
0.2
0.4
0.6
0.8
1.0
Fig. 21.19 NIR spectra of PA fabric finished with a flame retardant containing various amounts
of residual moisture. Spectra were normalized to the double peak of the C-H overtone peak at
1720/1750 nm
0
2
4
6
8
10
12
0
2
4
6
8
10
12
RMSEC=0.4 %
BIAS=5E-5 %
SEC=0.4 %
RMSEP=0.5 %
BIAS=0.2 %
SEP=0.5 %
R²= 98.2 %
r²=0.991
Moisture Content (NIR) [wt%]
Moisture Content (Gravimetry) [wt%]
Fig. 21.20 PLS calibration to the moisture content of PA fabrics finished with a flame retardant