The document reports on testing of modulus of elasticity, modulus of rupture, internal bonding, thickness swelling, and water absorption for particleboard with variations in resin content (7%, 9%, 11%) and particle size (1.0mm, 2.0mm). ANOVA analysis found significant differences between resin contents for all properties tested, but only found significant differences between particle sizes for internal bonding, thickness swelling, and water absorption. Particle size and resin content both affected internal bonding and thickness swelling.

1. 21
CHAPTER 4
RESULT AND DISCUSSION
4.1 Modulus of Elasticity (MOE)
Graph 4.1: MOE testing
Based on bending testing, MOE result for 7% resin content, particle size 2.0mm is
higher than 1.0 mm as. For 9% resin content, particle size 2.0 mm is higher than
1.0 mm. then, while 11% resin content, particle size 2.0 mm is higher than 1.0
mm.
0
500
1000
1500
2000
2500
3000
7% 9% 11%
MegaPascal(mPa)
Resin Content
MOE
particle size (1.0 mm)
particle size (2.0 mm)

2. 22
4.1.1 Table of ANOVAs analysis
Table 4.1.1: Variance analysis of MOE
Source Type III SS Df Mean square F-ratio p-value
Size 88,209.434 1 88,209.434 2.342 0.139
Resin 4,624,313.088 2 2,312,156.544 61.379 0.000
Size*Resin 36,212.097 2 18,106.049 0.481 0.624
Error 904,080.398 24 37,670.017
Figure 4.1.1.1.: ANOVA analysis of MOE between size particle and resin content
There are very high significant different between resin while for size particle there
are no significant different and no interaction between size and resin.

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4.2 Modulus of Rupture (MOR)
Graph 4.2: MOR testing
Based on bending testing, MOR result for 7% resin content, particle size 2.0mm is
higher than 1.0 mm as for 9% resin content; particle size 2.0 mm higher than 1.0
mm While, for 11% resin content, particle size 2.0 mm is higher than 1.0 mm.
0
2
4
6
8
10
12
14
16
18
20
7% 9% 11%
MegaPascal(mPa)
Resin Content
MOR
particle size (1.0 mm)
particle size (2.0 mm)

4. 24
4.2.1 Table of ANOVAs analysis
Table 4.2: Variance analysis of MOR
Source Type III
SS
Df Mean
Squares
F-ratio p-value
Size 1.478 1 1.478 0.508 0.483
Resin 337.923 2 168.962 58.045 0.000
Size*Resin 0.910 2 0.455 0.156 0.856
Error 69.860 24 2.911
Figure 4.2.1.1: ANOVA analysis of MOR between size particle and resin content
There is very high significant difference between resins while no insufficient
difference for size particle.

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4.3 Internal Bonding
Graph 4.3: Internal bonding test
For the internal bonding testing, the 7% resin content, particle size 1.0 mm is
higher than 2.0 mm, the 9% resin content, particle size 1.0 mm is higher than 2.0
mm while, for the 11% resin content, particle size 1.0 mm higher than 2.0 mm.
0
0.5
1
1.5
2
2.5
7% 9% 11%
Percent(%)
Resin Content
IB
particle size (1.0 mm)
particle size (2.0 mm)

6. 26
4.3.1 Table of ANOVA analysis
Table 4.3.1: Variance analysis internal bonding
Source
Type III
SS
df
Mean
Squares
F-ratio p-value
SIZE 4.018 1 4.018 129.706 0.000
RESIN 6.272 2 3.136 101.227 0.000
SIZE*RESIN 0.066 2 0.033 1.066 0.352
Error 1.487 48 0.031
Figure 4.3.1.1: ANOVA analysis of internal bonding between size particle and
resin content
There are high significant different between particle size and resin. So, particle
size and resin affect thickness swelling.

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4.4 Thickness Swelling
Graph 4.4: Thickness swelling test
Based on thickness swelling result, 7% resin content, particle size 2.0mm is
higher than 1.0 mm. 9% resin content, particle size 2.0 mm higher than 1.0 mm
and for 11% resin content, particle size 2.0 mm is higher than 1.0 mm.
0
5
10
15
20
25
30
35
7% 9% 11%
Percent(%)
Resin Content
TS
particle size (1.0 mm)
particle size (2.0 mm)

8. 28
4.4.1 Table of ANOVA analysis
Table 4.4.1: Variance analysis of Thickness swelling test
Source Type III
SS
df Mean
Squares
F-ratio p-value
Size 257.371 1 257.371 186.968 0.000
Resin 1,103.587 2 551.794 400.853 0.000
Size*Resin 109.312 2 54.656 39.705 0.000
Error 66.074 48 1.377
Figure 4.4.1.1: ANOVA analysis of TS between size particle and resin content
There are high significant difference between particle size and resin. So, particle
size and resin affect thickness swelling.

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4.5 Water Absorption
Graph 4.5: water absorption test
For the water absorption, for the 7% resin content, 1.0 mm is higher than 2.0 mm.
for the 9%, particle size 1.0 mm is higher than 2.0 mm. then 11% resin content,
particle size 2.0 mm is higher than 1.0 mm.
0
20
40
60
80
100
120
140
160
7% 9% 11%
Percent(%)
Resin Content
WA
particle size (1.0 mm)
particle size (2.0 mm)