Relative Humidity (%)
0 30 50 70 90
Modulus (MPa)
0 200 400 600 800 1000 1200
PEC PS30 PS50 PS70
0 30 50 70 90 0
10 20 30 40 50
PEC
PS30
PS50
PS70
Tensile Strength (MPa)
Relative Humidity (%)
R elative hu m idity (% )
0 30 50 70 90
Elongation (%)
0 5 10 15 20 25 30 35
P E C
P S 30
P S 50
P S 70
Relative Humidity (%)
0 30 50 70 90
Modulus (MPa)
0 200 400 600 800 1000 1200
GL 20 GL 30 GL 40
Relative humidity (%)
0 30 50 70 90
Tensile strength (MPa)
0 5 10 15 20 25 30 35 40
GL 20 GL 30 GL 40
Relative humidity (%)
0 30 50 70 90
Elongation (%)
0 5 10 15 20 25 30 35
GL 20 GL 30 GL 40
0 10 20 30 40 50
Intensity
0 200 400 600 800 1000 1200
0 10 20 30 40 50
Intensity
0 1000 2000 3000 4000 5000 6000
10 20 30 40
Relative Intensity
0 200 400 600 800 1000 1200
1400 (a) Pectin film
(b) Pectin/Starch (70/30) (c) Pectin/Starch (50/50) (d) Pectin/Starch (30/70)
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0 10 20 30 40
0 5 10 15 20 25 30 35 40 45
Time (day)
Biodegrability (%)--
PEC PS30 PS50 PS70 Starch Cellulose
