3.3 Result
57
Fig. 3.4 a, b and c XB, XXB and GXXB SEM analysis, respectively
3.3.4 Outcome of TGA Analysis
TGA was applied testing the heat characteristics of the collection of beads when
heat was introduced. For testing the heat firmness of the collection of beads, a plot
of weight per cent versus temperature was produced. Figure 3.6 illustrates the stages
involved in the heat breakdown of bead sets. XB decomposition took place in three
stages in the first stage with a weight loss of 6% between 34 and 148 °C [21].
The second stage commenced with a weight loss of 36% at 250 °C up to 320 °C.
This weight loss is attributed to saccharide ring dehydration, depolymerization and
decomposition of the adsorbent acetylated and deacetylated units [22]. In the third
stage, weight loss of 51% was noticed above 400 °C which is due to the disintegration
of non-cross-linked chitosan at this point.
During the first stage, the XXB showed a weight loss of 5% at temperatures
between 34 and 141 °C. The second stage started at 227 °C and proceeded with a
57
Fig. 3.4 a, b and c XB, XXB and GXXB SEM analysis, respectively
3.3.4 Outcome of TGA Analysis
TGA was applied testing the heat characteristics of the collection of beads when
heat was introduced. For testing the heat firmness of the collection of beads, a plot
of weight per cent versus temperature was produced. Figure 3.6 illustrates the stages
involved in the heat breakdown of bead sets. XB decomposition took place in three
stages in the first stage with a weight loss of 6% between 34 and 148 °C [21].
The second stage commenced with a weight loss of 36% at 250 °C up to 320 °C.
This weight loss is attributed to saccharide ring dehydration, depolymerization and
decomposition of the adsorbent acetylated and deacetylated units [22]. In the third
stage, weight loss of 51% was noticed above 400 °C which is due to the disintegration
of non-cross-linked chitosan at this point.
During the first stage, the XXB showed a weight loss of 5% at temperatures
between 34 and 141 °C. The second stage started at 227 °C and proceeded with a