Biomedical Engineering Reference
In-Depth Information
Modified
cellulose+
PLA or
PVA or
PP
Tensile
Strength
(MPa)
Young's
Modulus
(MPa)
Elongation at
break (mm)
Graphs are
1. Tensile strength versus Parts per
hundred Modified Cellulose
2. Young's Modulus versus Parts per
hundred Modified Cellulose
3. Elongation at break versus Parts
per hundred Modified Cellulose
10:90
13.42
655.70
333.15
30:70
15.21
866.23
297.44
50:50
18.33
1276.53
196.79
70:30
19.66
1432.75
132.26
90:10
21.88
1543.88
67.44
Mechanical properties of all three types of modifies cellulose (with
PLA, PVA, PP) are studied in present work. An increasing trend in ten-
sile strength and Young's modulus with modified cellulose fiber content is
found from (Table 9.3). It was observed that tensile strength and Young's
modulus of the films increases as the percentage composition of the modi-
fied cellulose increases. This enhancement indicates the effectiveness of
the modified cellulose as reinforcement. With the increasing of cellulose
content, the interactions between the cellulose and the matrix is improved
and crack propagation was inhibited, which resulted in the increased ten-
sile strength and Young's modulus. Contrarily, it illustrated that there was
interfacial adhesion between cellulose and the matrix; otherwise, it would
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