THESIS - ROC CH ... - FINAL - resubmission.pdf - University of Guelph
THESIS - ROC CH ... - FINAL - resubmission.pdf - University of Guelph
THESIS - ROC CH ... - FINAL - resubmission.pdf - University of Guelph
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Further analysis <strong>of</strong> the Amide II band revealed a different outcome. From Figure 6.11, it<br />
can be seen that the SMF0.25 and SNF0.25 have both slightly shifted to higher wavenumbers in<br />
comparison to the other specimens. This correlates with the mechanical characteristics<br />
whereby SMF0.25 and SNF0.25 resulted in improved properties. This shift in frequencies could<br />
indicate a stronger interaction compared to other concentration loadings.<br />
Figure 6.11: Enlarged FTIR spectra <strong>of</strong> SPI/Cellulose blend film comparison focusing on the Amide<br />
II band.<br />
Absorbance<br />
0.29<br />
0.27<br />
0.25<br />
0.23<br />
0.21<br />
0.19<br />
0.17<br />
0.15<br />
1580<br />
MSF2.5<br />
MSF1.0<br />
MSF0.5<br />
MSF0.25<br />
SNF0.25<br />
SPI<br />
1560<br />
Progressing onto Amide III, similar results in shifts to higher wavenumbers was observed<br />
with SMF0.25 and SNF 0.25 specimens. This further supports increased interaction at the<br />
concentration loading <strong>of</strong> 0.25% affecting material properties. The FTIR findings reveal that<br />
1540<br />
Wavenumber (cm -1 )<br />
83<br />
1520<br />
1500