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International Journal of Mechanical Engineering and Technology (IJMET) Volume 8, Issue 1, January 2017, pp. 01–14, Article ID: IJMET_08_01_001
Available online at http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=8&IType=1
ISSN Print: 0976-6340 and ISSN Online: 0976-6359
© IAEME Publication
FABRICATION AND INVESTIGATION OF TENSILE
AND BENDING–MECHANICAL AND OXIDATIVE
BIODEGRADATION PROPERTIES OF HYBRID
NATURAL FIBRE REINFORCED BIO-COMPOSITES
S P Jagadish
Assistant Professor, Dept. of Mechanical Engineering, RYMEC, Karnataka, India
Dr. K R Dinesh
Professor, Dept. of Mechanical Engineering, Government Engineering College, Karnataka, India
Dr. A Thimmana Gouda
Assistant Professor, Dept. of Mechanical Engineering, RYMEC, Karnataka, India
Shivasharanayya Swamy
Assistant Professor, School of Mechanical Engineering, REVA University, Karnataka, India
ABSTRACT
Natural fibers are gathering responsiveness from investigation to develop in polymer
composites due to their eco-friendly nature and adequate or acceptable. The aim of the present
research work was experimental investigation to evaluate various physical and mechanical
properties of hybrid natural fibre polymer composite (Epoxy with Jute, Banana, Sisal and Hemp
fibres) at different weight percentages (16 and 24) with epoxy resin. The properties of Jute,
Banana, Sisal and Hemp natural fibres were found to be good capacious to be used as
reinforcement in composite materials. The results of the experiments tackle, to guess timate various
physical and mechanical properties of natural fiber hybrid composites hemp fibres were presented.
Tests wereper formed on 100 kN servo hydraulic universal testing machine (UTM) under
displacement mode of control, enhance mechanical properties is main attentiveness of this study.
On the basis of comprehensive study the 24 wt% of hybrid natural fibres is found to be better
mechanical property compare to than other 16 wt% of hybrid natural fibres combinations. Also
Oxidative biodegradation test was also carried out according to ISO standard for the same
specimen to know the biocompatibility.
Key words: Jute, Banana, Sisal, Hemp fibres, Epoxy resin, Mechanical properties, SEM, Medical
application.
Cite this Article: S P Jagadish, Dr. K R Dinesh, Dr. A Thimmana Gouda and Shivasharanayya
Swamy, Fabrication and Investigation of Tensile and Bending–Mechanical and Oxidative
Biodegradation Properties of Hybrid Natural Fibre Reinforced Bio-Composites. International
Journal of Mechanical Engineering and Technology, 8(1), 2017, pp. 01–14.
http://www.iaeme.com/IJMET/issues.asp?JType=IJMET&VType=8&IType=1
S P Jagadish, Dr. K R Dinesh, Dr. A Thimmana Gouda and Shivasharanayya Swamy
http://www.iaeme.com/IJMET/index.asp 2 [email protected]
1. INTRODUCTION
Now a days worldwide researchers are stressful to implement the natural fibres in the medical field as
implant material instead of Corban polymer plates and alloy materials therefore from the literature review
shows that the natural fibres are rehabilitation or bio-material, not harmful or bio-compatible or toxic to
living tissue and also Yan Li et.al found that Sisal fibre has No robustness or health risk [1] ,Sisal fibre in
the form of particles or fibres used in orthopaedics as bone implants as a substitute material in place of
alloy materials [3,4,29-32] and also now a days Bio composites materials biopolymers and natural fibers
pre-owned as bone implants [2] these natural fibres have an environmentally friendly alternative propriety
of several attractive ascribe that include lower density, lower cost, non-toxicity, ease of processing, capable
of being renewed and repossess [5-7].
2. CONVENTIONAL VINTAGE OF NFPCS
Natural fiber properties are varied to each other according to the present work, because of different several
of fibers, sources, and moisture conditions. The interpretation, representation, of NFPCs be contingen on
some feature, like mechanical framework, fabric [9],inadequacy, [10],refers to the angle between the
direction of the helical windings of cellulose micro fibric [8], fumigant. Properties [13], measures [11],
physical properties [12], and also the interplay of a fiber accompanied by the matrix [25]. seeing that all
possible product in desire has defect star comparably draw backs of natural fiber reinforced polymer
composites are the connection at, between natural fiber and polymer matrix are, complication, situation
difficult taken inside reflection, as a result of the a quantity by which amounts differ or difference in
chemical assembly between these two juncture. This, escort inadequate to, stress bear throughout the time
of interface of the NFPCs Thus, the chemical behaviours for the natural fiber are compulsory. To attain
good interface properties, the reagent functional groups in the chemical treatments have capability to react
on the fiber assemblies and alter the fiber composition [15]. Natural fibers contain a or interface properties.
The reagent functional clusters in the chemical treatments have capability to react on the fiber structures
and alter the fiber composition [15]. Natural fibers include a hydrophilic. During, process of NFPCs,
weaker interfacial attachment occurs between hydrophilic natural fibre and hydrophobic polymer matrices
due to hydroxyl group in natural fibres. Due to could produce NFPCs with non-stable mechanical and
physical properties [16].
3. MATERIALS
3.1. Raw Materials
The natural fibers such as Sisal, Jute, banana and Hemp were extracted by the decorticating process and
The fibres are prepared by Mat type i.e. fibre placed in X&Y Direction or with +/- 0 to 900 orientation and
borrowed from Chennai-Tamilnadu and these fibres are used for to fabricate the 16% & 24% Hybrid
natural fibre polymer composites.
Figure 1(a) Sisal Fibre with Mat-Type Figure 1(b) Banana Fibre Mat –Type
Fabrication and Investigation of Tensile and Bending–Mechanical and Oxidative Biodegradation Properties of
Hybrid Natural Fibre Reinforced Bio-Composites
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Figure 1 (c) Jute Fibre with Mat type Figure 1 (d) Hemp Fibre with Mat type
Figure 1 (e) Aluminium Oxide
Figure 1 a, b, c, d, & e shows different natural fibre materials
4. METHODOLOGY
4.1. Methodology for Hybrid Natural Fiber Composite
Coated composites were succeed, thrive, with the aid of four different natural fibers such as jute, hemp,
banana and sisal with bi-directional orientation in which a Vacuum Bag technique procedure was used to
consolidate four dissimilar, materials in a hybrid Natural fibre polymer composite
Characterization is carried out by Epoxy resin -LY556 as a matrix material and hardener HY 951[15,
16]with 04% Sisal fibers + 04% Jute fibers + 04% Hemp fibers + 04% Banana fibers = 16% of Natural
fibers are placed layer by layer or ply in the form of orthotropic i.e. stacking sequence is 0±90º fiber
orientation filled with 04% aluminium oxide is used as Filler material the purpose of adding filler is to
boost the strength and stability of laminate or specimen and by using Vacuum Bag technique& the samples
were prepared according ASTM standards for Tensile ASTM D-3039 and for Bending Tests specimens are
prepared by ASTM D-790. Similarly fabrication for 24% is carried out and testing is carried out. For
natural fiber reinforced composite the number of layers varied from 4 layers. The curing time was around
24hrs at normal room temperature
S P Jagadish, Dr. K R Dinesh, Dr. A Thimmana Gouda and Shivasharanayya Swamy
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4.2. Experimentation
4.2.1. Tensile test
The ends of the specimen are finished by emery paper using file and file for tensile testing. There are two
different types of specimen are prepared, the first specimen consists of 16% Hybrid natural fibre polymer
composites and the second is of24% Hybrid natural fibre polymer composites. The specimen preparation,
sizes, gauge dimension and speeds are according to the ASTM D-3039 standard. The test was carried out
on the Universal Testing Machine (UTM) and the surrounding temperature is 35ºC. A tensile test specimen
placing in the testing machine and applying load until it fractures. Due to the application of load, the
elongation of the specimen is recorded. Three more readings are taken and the average values are used for
presentation.
Figure (a) Figure (b)
Figure 2 (a & b) 16% & 24 %composition tensile specimen after testing
4.2.2. Flexural Properties
Flexural properties of 16% and 24% Hybrid natural fibre polymer composites filled with composites with
varying amounts of fillerAL2O3 are shown in Table 1.
Flexural modulus for 16% and 24% Hybrid natural fibre polymer composites exhibited n growing
tendency with increased filler content. The growth of flexural modulus was attributed to the boosted
interfacial interaction existed between the matrix and filler,
Figure 3 (a & b) 16% and 24% HNFPCM Bending Specimen’s after testing
Fabrication and Investigation of Tensile and Bending–Mechanical and Oxidative Biodegradation Properties of
Hybrid Natural Fibre Reinforced Bio-Composites
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Figure (a) Figure (b)
Figure 4 (a & b) 16% & 24 % composition bending specimen after testing
4.2.3. Oxidative Biodegradation
4.2.3.1. Test Solution for the Oxidative Deprivation
For oxidative deprivation, the following solutions were proposed;
• Hydrogen peroxide and Water, e.g. 3% hydrogen peroxide solution, pharmacopoeia mark.
• Fenton’s reagent it is the dilute hydrogen peroxide solution and iron salts mixture, e.g.100µmol Fe² and 1
µmol H2O.
This stability range shall be specified, justified and reported.
Container & Number of test samples: Chemical grade glass wear had been used for the test. Three
samples were used for each test period. The samples were fully finished product. A different container
used for each sample& one blank used for each test period 1 Week.
Figure 5 Biodegrading Test Specimens
S P Jagadish, Dr. K R Dinesh, Dr. A Thimmana Gouda and Shivasharanayya Swamy
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Fenton’s reagent solution
24% natural fibre hybrid polymer composite specimen
Figure 6 Specimens under Biodegrading Test in Fenton’s reagent solution
4.2.3.2. Size and shape of test samples
The size and shape of the test specimen samples for corrosion test were prepared according to ISO10993-
12.The size, shape and surface area of the specimen has been chosen in such that equilibrium with the ruin
solution and constant mass for the determination of the mass balances that reached in a satisfactory time.
4.2.3.3. Mass/volume ratio
The ratio of the mass of the test specimen to the volume of the test solution should be at minimum 1g:
10ml. The test specimens were fully immersed in the test solution.
The ratio 1g:10ml was used for selected for practical explanations when using this ratio, however, it
has considered that the release of ruin products can interfere with the advancement of ruin itself and can
influence the rate of the ruin and the equilibrium of the ruin reactions .
4.2.3.4. pH Range
If the pH test solution is significant, the pH shall be maintained in an appropriate range. The pH chosen
shall be appropriate site of indented use. Changes in the pH induced by physiological phenomena, e.g.
during an inflammatory response, shall be considered.
The pH shall be reported and justified in the test report.
It should be recognized that, if the pH value is not maintained in the appropriate range, the degradation
products generated might or might not be the same as those that occur under biological conditions.
Fabrication and Investigation of Tensile and Bending–Mechanical and Oxidative Biodegradation Properties of
Hybrid Natural Fibre Reinforced Bio-Composites
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5. RESULT AND DISCUSSION
5.1. Tensile Test Results
Table 1 Experimental results was Tabulated and shows (Graph) of Tensile Test 16% natural fibers
Sp.
No.
Peak Load
(Fmax) kN
Displacement
at Fmax
(mm)
Breaking
Load (kN)
Maximum
Displacement
(mm)
Area
mm2 Ultimate
Stress
(kN/mm2)
Elongation
%
Yield Stress
(kN/mm2)
Femur Bone
Tensile Strength
or Ultimate Stress
1 6.420 1.9 4.320 2.20 159.500 0.040 1.613 0.027
43.44±3.62 Mpa or
0.04344±0.00362
(kN/mm2)
2 6.700 2.3 4.320 2.700 159.500 0.042 1.980 0.027
43.44±3.62 Mpa or
0.04344±0.00362
(kN/mm2)
Table 2 Experimental results was Tabulated and shows (Graph) of Tensile Test 24% natural fibers
Sp.
No.
Peak Load
(Fmax) kN
Displaceme
nt at Fmax
(mm)
Breaking
Load (kN)
Maximum
Displacement
(mm)
Area
mm2 Ultimate Stress
(kN/mm2) Elongation
%
Yield
Stress
(kN/mm2)
Femur Bone Tensile
Strength or Ultimate
Stress
1 6.980 1.1 6.980 1.200 159.500 0.044 0.880 0.027
43.44±3.62 Mpa or
0.04344±0.00362
(kN/mm2)
2 6.860 5.500 40420 2.1500 159.500 0.043 15.765 0.027
43.44±3.62 Mpa or
0.04344±0.00362
(kN/mm2)
Figure (a) Figure (b)
S P Jagadish, Dr. K R Dinesh, Dr. A Thimmana Gouda and Shivasharanayya Swamy
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Figure (c) Figure (d)
Figure 7 (a,b,c,d) SEM Images for 16% Tensile test specimens
Figure (a) Figure (b)
Figure (c) Figure (d)
Figure 8 (a,b,c,d) SEM Images for 24%Tensile test specimens after the test
Fabrication and Investigation of Tensile and Bending–Mechanical and Oxidative Biodegradation Properties of
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5.2. Bending Test Results
5.2.1. Bending Test Results For 16% HPCM
Table 3 Experimental results was Tabulated and shows (Graph) of Bending Test 16%HPCM.
Sl
No
Peak
Load
(Fmax)
kN
Displaceme
nt At Fmax
(mm)
Breakin
g Load
(kN)
Maximum
Displaceme
nt (mm)
C/S
Area
mm2
Bending
Strength
(kN/mm2)
Bending
Stress
(kN/mm2
)
Modulus
of
Elasticity
(kN/mm2)
Maximu
m
Bending
Moment
kN.mm
Femur
Bone
Bending
Strength
[14]
1 4.040 2.800 3.920 3.00 40.640 0.099 4.427 743.157 95.950 84.03±9.91
(Mpa) or
0.084±
0.00991(kN
/mm2)
2 4.020 1.900 3.980 7.800 40.640 0.099 4.405 1089.757 95.475
5.2.2. Bending Test Results For 24% HPCM
Table 4 Experimental results was Tabulated and shows (Graph) of Bending Test 24%HPCM
Sl
No
Peak
Load
(Fmax
) kN
Displace
ment At
Fmax
(mm)
Breaki
ng
Load
(kN)
Maximu
m
Displace
ment
(mm)
C/S
Area mm2
Bendi
ng
Stren
gth
(kN/m
m2)
Bending
Stress
(kN/mm2
)
Modulus
of
Elasticity
(kN/mm2
)
Maximu
m
Bending
Moment
kN.mm
Femur Bone
Bending
Strength [14]
1 4.100 2.400 3.980 3.200 40.640 0.101 4.493 879.893 97.375 84.03±9.91(Mpa)
or0.084±
0.00991(kN/mm2) 2 3.740 2.500 3.660 4.00 40.640 0.092 4.098 770.529 88.825
3 5.280 4.500 4.280 8.400 40640 0.130 5.786 604.336 125.400
Figure (a) Figure (b)
S P Jagadish, Dr. K R Dinesh, Dr. A Thimmana Gouda and Shivasharanayya Swamy
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Figure (c) Figure (d)
Figure 9 (a,b,c,d) SEM Images For 16% HNFPC Bending Test Specimen after the test
Figure (a) Figure (b)
Figure (c) Figure (d)
Figure 10 (a,b,c,d) SEM Images for 24% HNFPC Bending Test Specimen after the test
Fabrication and Investigation of Tensile and Bending–Mechanical and Oxidative Biodegradation Properties of
Hybrid Natural Fibre Reinforced Bio-Composites
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2.8
2.9
3
3.1
3.2
3.3
Specimen-1 Specimen-2 Specimen-3
Weight in gms weight in gms
4.4
4.6
4.8
5
5.2
5.4
5.6
38 50 60 70
pH
va
luve
Temperature in oC
5.3. SEM ANALYSIS
The fracture surface of Hybrid natural Sisal, Hemp, Jute and Banana fiber composites are shown in the fig
7,8,9 & 10. It is observed from the fracture damage that fracture is of ductile type with appreciable plastic
deformation. The macrograph in the fig 7,8,9 & 10. Shows the image of tensile specimen made of 250mm
length of 24%Hybrid natural sisal, hemp, jute and banana fiber composites.
5.4. Oxidative Degradation Test Results
Figure 11 Figure12
Figure (a) Figure (b)
Figure (c) Figure (d)
Figure 13 (a,b,c,d) SEM images for Degradation test for 24% HNFPCM
S P Jagadish, Dr. K R Dinesh, Dr. A Thimmana Gouda and Shivasharanayya Swamy
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6. CONCLUSION
The following conclusions were drawn base on the observation made from test results of tensile and
bending test, also on results of Oxidative Biodegradation test carried out on prepared Hybrid Natural Fibre
Reinforced Bio-Composites.
• Increase in fiber concentration the tensile strength of the specimen also increased. When fibre concentration
is less the matrix and fiber interface shows weak bonding. The incorporation of fibre into resin matrix
increases the hardness of the composite, which is related to strength and toughness. The close packing of
fibres in the compounds increases the density while resilience decreases. The composites made from 250
mm length of Hybrid natural sisal, hemp, jute and banana fibers show the maximum tensile strength and
good tear strength. Resin can successfully used as matrix in bio composites. Using different surface
modifications of fiber the strength of the composites can be increased. Finally conclude that 24%Hybrid
natural sisal, hemp, jute and banana fiber composites will have good mechanical properties compare to 16%
Hybrid natural Sisal, hemp, jute and banana fiber composites.
• Hybrid Natural fiber reinforced polymer composites have beneficial properties such as low density, less
expensive and reduced solidity when compared to synthetic composite products, thus providing advantages
for utilization in commercial applications (automotive industry, buildings, Constructions, and medical
applications). Using natural fibers as reinforcement for polymeric composites introduces positive effect on
the mechanical behavior of polymers. This paper evaluates the characteristics and properties of hybrid
natural fiber reinforced polymer composites: mechanical and SEM images
• From experimental results fig 11 it is found that negligible amount of weight is increased or gained by
specimen hence to reduce the weight gained bio-compatible coating is necessary on the natural fibre hybrid
polymer composite
• From pH value in fig 12 it is found if we increase the temperature the pH value also increases, then the
solution is having normal pH value not turning to acidic nature.
7. SCOPE FOR FURTHER WORK
• For these Hybrid Natural fiber reinforced polymer composite materials coating can be done by different bio-
compatible coating material
• Compare the Natural fiber properties to Ccorbon fibre, S-Glass fiber or E-Glass fiber and also to the widely
using biomaterial (SS316L) for Orthopaedic Implants especially for Femur Prosthesis.
• It is possible to conduct DME analysis to study the damping analysis, temperature that material can with
stand and stiffness of the material.
• Fatigue test can be carried out to measure the endurance limt that material posses.
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and Compression Test on Sisal Fibre Reinforcement Epoxy Composite Materials Used as Orthopaedic
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Web Site: www.ijaiem.org Email: [email protected], [email protected] 2, Issue 12,
December 2013 ISSN 2319 - 4847Volume 2, Issue 12, December 2013 Page 376-389
[31] Dr.K R Dinesh1, Jagadish S P2, Dr.A Thimmanagouda3 “CHARACTERIZATION AND ANALYSIS
OF WEAR STUDY ON SISAL FIBRE REINFORCEMENT EPOXY COMPOSITE MATERIALS
USED AS ORTHOPAEDIC IMPLANT”- 2745 Vol. 6, Issue 6, pp. 2745-2757 International Journal of
Advances in Engineering & Technology, Jan. 2014. ©IJAET ISSN: 22311963:
[32] Dr A Thimmana Gouda1, Jagadish S P2, Dr K R Dinesh3, Virupaksha Gouda H4, Dr N Prashanth:-
“Characterization and Investigation of Mechanical Properties of Hybrid Natural Fiber Polymer
Composite Materials Used As Orthopaedic Implants for Femur Bone Prosthesis” IOSR Journal of
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