4.9 Thermal Properties
105
Table 4.1
Thermal properties of different PVA bionanocomposite films [12]
Sample
T
g (°C)
H m (J/g)
χ c (%)
T
m (°C)
T
5% (°C)
T
80% (°C)
T
d (°C)
T
d (°C)
PVA
65.19
50.8
36.65
222.91
200.15
363.5
274.23
PVA/HNT/3 wt%
65.13
50.5
37.6
224.74
265.29
387
283.2
PVA/HNT/5 wt%
65.86
50.2
38.2
225.13
268.06
422.87
286.47
PVA/HNT/10 wt%
64.91
44.15
35.4
226.67
270.21
428.03
287.13
PVA/Cloisite30B/3 wt%
67.5
49.6
36.9
220.44
253.3
387.9
282.21
PVA/Cloisite30B/5 wt%
70.2
49.09
37.2
221.62
261.1
407.12
287.41
PVA/Cloisite30B/10 wt%
71.8
45.01
36.1
221.06
265.3
435.3
290.13
PVA/NBC/3 wt%
70.53
50.01
37.21
222.12
256.3
390.67
278.48
PVA/NBC/5 wt%
73.46
49.77
38.83
221.57
262.96
440.28
283.4
303.77
PVA/NBC/10 wt%
75.06
48.16
40
222.63
270.73
464.03
294.61
324.12
Note T
g ,
ΔH m ,
χ c and T
m are glass transition temperature, melting enthalpy, degree of crystallinity and melting temperature determined in DSC analysis,
respectively. T
5% , T
80% , T
d and T
d are the temperatures at the mass losses of 5 and 80%, as well as the first and second maximum decomposition temperatures
in TGA accordingly