Processing - Louisiana State University · Bagasse contains about 65 percent fiber, 25 percent pith...
Transcript of Processing - Louisiana State University · Bagasse contains about 65 percent fiber, 25 percent pith...
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CCCCoooommmmppppaaaarrrraaaattttiiiivvvveeee PPPPrrrrooooppppeeeerrrrttttiiiieeeessss ooooffff BBBBaaaaggggaaaasssssssseeeePPPPaaaarrrrttttiiiicccclllleeeebbbbooooaaaarrrrdddd ((((BBBBPPPPBBBB))))
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Sugar Cane Processing
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Sugar Industry In LouisianaSecond largest plant commodity in LouisianaProducing $500 Million/year in sugar-related productsProducing 16 Million tons of bagasse as by-product
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Harvested Sugar Cane
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Sugar Extraction
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Sugar Mill
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By-Product - Bagasse
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By-Product - Bagasse
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About 30% of the 16 Million tons of bagasse available for fiber sources
in Louisiana annually
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Bagasse contains about 65 percent fiber, 25 percent pith cells, and 10 percent water soluble.Bagasse fibers average 1.5 to 2 millimeters (0.06 to 0.08 inch) in length. They are relatively fine and their chemical properties are similar to those of hardwood fibers.An essential element in the conversion of bagasse to a satisfactory paper is the mechanical removal of a substantial proportion of the pith prior to the pulping operation. Bagasse particleboard (BPB) uses all bagasse.
Bagasse Fiber
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Bagasse Particleboard Manufacturing
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Baled Bagasse
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Bagasse Drying
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Rotary Dryer
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Bagasse Size Reduction
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Bagasse PB – Blending
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Bagasse PB - Forming
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Bagasse PB – Pressing
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Bagasse PB – Pressing
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Bagasse PB – Pressing
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Bagasse PB – Panel Cooling
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Bagasse PB –Sanding
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Bagasse PB – Finished Panel
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Laminated Flooring
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Laminated Flooring
1. The Laminate Surface.A clear wear layer for super protection.
2. The Image Layer. This layer for providing a hardwood look.
3. The Core. High Density Fiberboard (HDF) for moisture resistance and indentations.
4. The Laminate Backing.A thermo-fused backing for additional strength and protection.
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OOOObbbbjjjjeeeeccccttttiiiivvvveeee Developing bagasse
particleboard (BPB) for laminated flooring
applications
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Fiber Type
Resin (pMDI) Content
(%)
TargetThick-
ness(mm)
TargetDensity(g/cm3)
Resina-tion
Time(Second)
Press Tempera-
ture(C)
Press Cycle
(Second)
1-year old bagasse fiber hammermilled through a 6-mm screen
5%
8%6.35
0.72a
0.88b
0.72c
0.88d
240 185 165
Note: a – BPB1, b – BPB2, c – BPB3, and d – BPB4.
Technical Information of Bagasse Particleboard (BPB) Used in the Study
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Testing of Bagasse Particleboard
Test Performed:Bending MOE/MORIB and HardnessScrew HoldingLinear ExpansionThickness Swell
Test Standards:• ANSI/A208.1 (1999) • ANSI/A208.2 (1994)• ASTM D1037 (1996)
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Bagasse PB Samples
Linear Expansion
Bending MOE/MOR
IB
TS
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Bagasse PB Testing
Hardness
Internal Bond
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Results and Discussions
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Density profile
0
0.2
0.4
0.6
0.8
1
1.2
0 1.5 3 4.5 6 7.5Position (mm)
Dens
ity (g
/cm
3)
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Bending Modulus
y = 11.641x - 6.5015R2 = 0.781
y = 0.9967x + 2.9119R2 = 0.0017
0
1
2
3
4
5
6
0.7 0.75 0.8 0.85 0.9 0.95Density (g/cm3)
MO
E (G
Pa)
5%RC 8%RC Linear (8%RC) Linear (5%RC)
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0
0.5
1
1.5
2
2.5
3
3.5
4
ANSI A208.1 BPB1 BPB2 BPB3 BPB4
Board Type
MO
E (G
Pa)
Bending Modulus
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Bending Strength
y = 77.716x - 39.453R2 = 0.8712
y = 39.15x - 7.7643R2 = 0.07
0
5
10
15
20
25
30
35
40
0.7 0.75 0.8 0.85 0.9 0.95Density (g/cm3)
MO
R (M
Pa)
5%RC 8%RC Linear (8%RC) Linear (5%RC)
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Bending Strength
0
5
10
15
20
25
30
ANSI A208.1 BPB1 BPB2 BPB3 BPB4Board Type
MO
R (M
Pa)
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IB Strength
y = -1.7042x + 3.4738R2 = 0.0188
y = 8.2148x - 4.8424R2 = 0.6424
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0.7 0.8 0.9 1.0 1.1
Density (g/cm3)
IB (M
Pa)
5%RC 8%RC Linear (5%RC) Linear (8%RC)
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IB Strength
0
0.5
1
1.5
2
2.5
3
ANSIA208.1
BPB1 BPB2 BPB3 BPB4
Board Type
IB (M
Pa)
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Hardness
y = 2509.4x - 1310.8R2 = 0.8113
y = 2812.6x - 1654R2 = 0.4319
0
200
400
600
800
1000
1200
0.7 0.75 0.8 0.85 0.9 0.95 1
Density (g/cm3)
Har
dnes
s (K
G)
8% PMDI 5%PMDI Linear (8% PMDI) Linear (5%PMDI)
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Hardness
0
200
400
600
800
1000
1200
1400
Hardboard BPB1 BPB2 BPB3 BPB4
Board Type
Hard
ness
(Kg)
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Linear Expansion
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.7 0.8 0.9 1.0 1.1
Density (g/cm3)
Line
ar E
xpan
sion
(%)
5%RC 8%RC
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Linear Expansion
0
0.2
0.4
0.6
0.8
1
1.2
ANSIA208.1
BPB1 BPB2 BPB3 BPB4
Board Type
Line
ar E
xpan
sion
(%)
24-hour Water Soaked 0-95%RH
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Thickness Swell
Extreme Edge
Edge
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Thickness Swell
Center 2.54 cm
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Thickness Swell
0
2
4
6
8
10
12
14
16
18
ANSIA208.1
BPB1 BPB2 BPB3 BPB4
Board type
TS a
fter 2
4 ho
ur s
oaki
ng (%
)
E-Edge Edge 2.5-cm Center
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ConclusionsAll mechanical properties are highly correlated with the panel density. LE and TS showed less dependence on the density.Increase in resin content level led to higher strength and less swelling in general. All products showed high strength properties, well exceeding the performance levels specified in the ANSI standard.LE was higher than the critical value of 0.35 percent prescribed in the standard. TS for panels at 8% resin level met the 8% TS requirement (based on 24-hour water soaking), while those at 5% resin level exceeded the level.A consistent, high performance agrifiber composite panel with desirable environmental attributes could be successfully developed.