JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 54

Table 1: Material and mechanical properties of E-glass and other plant-based fibres

natural fibre

Properties \ fibres Density (g/m
3

E-glass 2.55

Hemp 1.48

Jute 1.46

Ramie 1.5 500 44 2 12-17

Coir 1.25 220 6 15-25 10

Sisal 1.33 600-700 38

Flax 1.4 800-1500 60-80

Cotton 1.51 400 12

Fig. 1: Different types of plant-based natural fibres

)

Tensile strength (MPa)

building and construction components (secondary structural members), and interior parts for automotive and aircraft engineering applications.

2400 73 3

550-900 70

400-800 9770 1.8 12

Tensile modulus (GPa) Elongation at break (%)

1.6 8

Moisture absorption (%)

---

Apart from plant-based fibres, animal fibres are another type of natural fibre that have been adopted recently for 39142 1.2-1.6 39357 bio-medical engineering applications. Cocoon silk, spider silk, chicken 11 7 8-25 feather fibre and human hair have also been used as reinforcement in bio-degradable/bio-resorbable polymers to form fully-biodegradable polymer composites. These fibres can be used as inlay made by protein-type materials and can be absorbed by the human body without inducing any adverse effects. Recent works focused on the combination of cocoon silk and chicken feather fibre with poly-lactic acid (PLA) to form a composite to be embedded in the human body for bone fixation. Moreover, these fibres can also be used as cross-ply reinforcement to enhance the delamination resistance properties of typical plainweave-fibre composites. The use of hair, indeed, is an ideal option as the source is abundant and it can be combined with polyester and polypropylene to form moderate-strength plastic materials. However, from a psychological point of view, some users may refuse to use products based on materials extracted from the human body, therefore the idea was dropped by the industry (mainly in Asian countries). Chicken feather fibre may be a good alternative as a reinforcement fibre when developing new composites. Down feathers have demonstrated better mechanical strength than flight feathers when combined with epoxy and PLA, due to the hollow structure of the tip of the feather (Figure 3). Table 2 shows the mechanical properties of different types of animal fibres used as reinforcement for polymer-based materials. The difficulties in adopting animal-based fibres for polymer-based composites are pretty much the same as in the case of plant-based fibres. However, the origin of the fibre sources and the sterilizing process are critical since the resulting composites will be used as implants or bone fixators. The processing temperature for injection moulding has to be accurately controlled. Typically, the degradation temperature of animal fibre such as silk is around 190°C, while it ranges from 180°C to 200°C for PLA. Surface treatments are commonly used to enhance the bonding strength between the fibre

54

properties between the fibre and matrix (with and without surface treatment), and wettability under different manufacturing conditions. The structure, composition and filament arrangement in a single fibre are very complex. The filament wiring pattern and surface morphology are different even if the fibre types are the same. Since plant-based fibres are naturally available and their pre-processing cost is relatively lower than with other fibres for moderate-strength products, they are ideal materials for making domestic products,
Fig. 2: Families of natural fibres for composites development

jec composites magazine / No67 August - September 2011



JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011

Cover
Edito
Point of view: "I have a very positive view of the market" by Thomas Hedger
Contents
Agenda of Events
COMPANY & BUSINESS
- In Brief
- Automotive
APPLICATIONS
- Aeronautics
- Building & construction
- Sustainability
MARKET
- Composites
- Asia-Pacific
- Resin
-Productivity
-Human Resources
FEATURE MARINE
- Natural Fibre
- Environment
- Race boat
- Simulation
- Coating
- Bonding
RESEARCH & DEVELOPMENT
- Simulation
- Natural Fibre
TECHNOLOGY & INNOVATIONS
- RTM-S
-Software
- SMC
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - Cover
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 2
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - Edito
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - Point of view: "I have a very positive view of the market" by Thomas Hedger
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 5
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - Contents
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 7
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 8
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - PubJEC
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - PubESI
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - In Brief
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Automotive
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Aeronautics
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 13
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Building & construction
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 15
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 16
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 17
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Sustainability
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Composites
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 20
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 21
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Asia-Pacific
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 23
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 24
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Resin
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 26
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 27
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - -Productivity
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 29
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 30
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - -Human Resources
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 32
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Natural Fibre
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 34
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Environment
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 36
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 37
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Race boat
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 39
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Simulation
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 41
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Coating
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 43
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 44
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 45
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 46
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Bonding
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 48
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Simulation
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 50
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 51
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 52
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - Natural Fibre
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 54
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 55
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - RTM-S
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 57
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 58
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 59
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - -Software
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 61
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 62
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 63
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - - SMC
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - Index
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - In the world
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 67
JEC COMPOSITES MAGAZINE - Issue #67 - August/September 2011 - 68
https://www.nxtbook.fr/newpress/jeccomposites/jcm2109_142
https://www.nxtbook.fr/newpress/jeccomposites/jcm2107_141
https://www.nxtbook.fr/newpress/jeccomposites/jcm2105_140
https://www.nxtbook.fr/newpress/jeccomposites/jcm2103_139
https://www.nxtbook.fr/newpress/jeccomposites/jcm-experts-digest-additive-manufacturing-2020
https://www.nxtbook.fr/newpress/jeccomposites/jcm2101_138
https://www.nxtbook.fr/newpress/jeccomposites/jcm2011_Special_Issue4
https://www.nxtbook.fr/newpress/jeccomposites/jcm2011_137
https://www.nxtbook.fr/newpress/jeccomposites/jcm2009_136
https://www.nxtbook.fr/newpress/jeccomposites/jcm2007_135
https://www.nxtbook.fr/newpress/jeccomposites/jcm_2020_Q1_Innovation_Report
https://www.nxtbook.fr/newpress/jeccomposites/jcm2005_Special_Issue3
https://www.nxtbook.fr/newpress/jeccomposites/jcm2005_134
https://www.nxtbook.fr/newpress/jeccomposites/jcm2003_133
https://www.nxtbook.fr/newpress/jeccomposites/jcm2001_132
https://www.nxtbook.fr/newpress/jeccomposites/jcm1911_Special_Issue2
https://www.nxtbook.fr/newpress/jeccomposites/jcm1911_131
https://www.nxtbook.fr/newpress/jeccomposites/jcm1909_130
https://www.nxtbook.fr/newpress/jeccomposites/jcm1907_129
https://www.nxtbook.fr/newpress/jeccomposites/jcm1905_128
https://www.nxtbook.fr/newpress/jeccomposites/jcm1903_Special_Issue1
https://www.nxtbook.fr/newpress/jeccomposites/jcm1903_127
https://www.nxtbook.fr/newpress/jeccomposites/jcm1901_126
https://www.nxtbook.fr/newpress/jeccomposites/jcm1811_125
https://www.nxtbook.fr/newpress/jeccomposites/jcm1810_124
https://www.nxtbook.fr/newpress/jeccomposites/jcm1808_123
https://www.nxtbook.fr/newpress/jeccomposites/jcm1807_122
https://www.nxtbook.fr/newpress/jeccomposites/jcm1805_121
https://www.nxtbook.fr/newpress/jeccomposites/jcm1804_120
https://www.nxtbook.fr/newpress/jeccomposites/jcm1803_119
https://www.nxtbook.fr/newpress/jeccomposites/jcm1802_119-Supplement_Innovation_Report
https://www.nxtbook.fr/newpress/jeccomposites/jcm1801_118
https://www.nxtbook.fr/newpress/jeccomposites/jcm1711_117
https://www.nxtbook.fr/newpress/jeccomposites/jcm1710_116
https://www.nxtbook.fr/newpress/jeccomposites/jcm1708_115
https://www.nxtbook.fr/newpress/jeccomposites/jcm1707_114
https://www.nxtbook.fr/newpress/jeccomposites/jcm1706_113
https://www.nxtbook.fr/newpress/jeccomposites/jcm1704_112
https://www.nxtbook.fr/newpress/jeccomposites/jcm1703_111
https://www.nxtbook.fr/newpress/jeccomposites/jcm1701_110
https://www.nxtbook.fr/newpress/jeccomposites/jcm1611_109
https://www.nxtbook.fr/newpress/jeccomposites/jcm1610_108
https://www.nxtbook.fr/newpress/jeccomposites/jcm1608_107
https://www.nxtbook.fr/newpress/jeccomposites/jcm1607_106
https://www.nxtbook.fr/newpress/jeccomposites/jcm1605_105
https://www.nxtbook.fr/newpress/jeccomposites/jcm1604_104
https://www.nxtbook.fr/newpress/jeccomposites/jcm1603_103
https://www.nxtbook.fr/newpress/jeccomposites/jcm1601_102
https://www.nxtbook.fr/newpress/jeccomposites/jcm1511_101
https://www.nxtbook.fr/newpress/jeccomposites/jcm1510_100
https://www.nxtbook.fr/newpress/jeccomposites/jcm1509_99
https://www.nxtbook.fr/newpress/jeccomposites/jcm1507_98
https://www.nxtbook.fr/newpress/jeccomposites/jcm1505_97
https://www.nxtbook.fr/newpress/jeccomposites/jcm1504_96
https://www.nxtbook.com/newpress/jeccomposites/jcm1503_95
https://www.nxtbook.com/newpress/jeccomposites/jcm1501_94
https://www.nxtbook.com/newpress/jeccomposites/jcm1412_93
https://www.nxtbook.com/newpress/jeccomposites/jcm1410_92
https://www.nxtbook.com/newpress/jeccomposites/jcm1409_91
https://www.nxtbook.com/newpress/jeccomposites/jcm1406_90
https://www.nxtbook.com/newpress/jeccomposites/jcm1405_89
https://www.nxtbook.com/newpress/jeccomposites/jcm1404_88
https://www.nxtbook.com/newpress/jeccomposites/jcm1403_87
https://www.nxtbook.com/newpress/jeccomposites/jcm1401_86
https://www.nxtbook.com/newpress/jeccomposites/jcm1311_85
https://www.nxtbook.com/newpress/jeccomposites/jcm1310_84
https://www.nxtbook.com/newpress/jeccomposites/jcm1308_83
https://www.nxtbook.com/newpress/jeccomposites/jcm1307_82
https://www.nxtbook.com/newpress/jeccomposites/jcm1305_81
https://www.nxtbook.com/newpress/jeccomposites/jcm1304_80
https://www.nxtbook.com/newpress/jeccomposites/jcm1303_79
https://www.nxtbook.com/newpress/jeccomposites/jcm1301_78
https://www.nxtbook.com/newpress/jeccomposites/jcm1212_77
https://www.nxtbook.com/newpress/jeccomposites/jcm1210_76
https://www.nxtbook.com/newpress/jeccomposites/jcm1208_75
https://www.nxtbook.com/newpress/jeccomposites/jcm1207_74
https://www.nxtbook.com/newpress/jeccomposites/jcm1206_73
https://www.nxtbook.com/newpress/jeccomposites/jcm1204_72
https://www.nxtbook.com/newpress/jeccomposites/jcm1203_71
https://www.nxtbook.com/newpress/jeccomposites/jcm1201_70
https://www.nxtbook.com/newpress/jeccomposites/jcm1111_69
https://www.nxtbook.com/newpress/jeccomposites/jcm1110_68
https://www.nxtbook.com/newpress/jeccomposites/jcm1108_67
https://www.nxtbook.com/newpress/jeccomposites/jcm1107_66
https://www.nxtbook.com/newpress/jeccomposites/jcm1105_65
https://www.nxtbook.com/newpress/jeccomposites/jcm1104_64
https://www.nxtbook.com/newpress/jeccomposites/jcm1103_63
https://www.nxtbook.com/newpress/jeccomposites/jcm1101_62
https://www.nxtbook.com/newpress/jeccomposites/jcm1011_61
https://www.nxtbook.com/newpress/jeccomposites/jcm1010_60
https://www.nxtbook.com/newpress/jeccomposites/jcm1009_59
https://www.nxtbook.com/newpress/jeccomposites/jcm1006_58
https://www.nxtbook.com/newpress/jeccomposites/jcm1005_57
https://www.nxtbook.com/newpress/jeccomposites/jcm1004_56
https://www.nxtbook.com/newpress/jeccomposites/jcm1003_55
https://www.nxtbook.com/newpress/jeccomposites/jcm1001_54
https://www.nxtbook.com/newpress/jeccomposites/jcm0911_53
https://www.nxtbook.com/newpress/jeccomposites/jcm0910_52
https://www.nxtbook.com/newpress/jeccomposites/jcm0909_51
https://www.nxtbook.com/newpress/jeccomposites/jcm0907-08_50
https://www.nxtbook.com/newpress/jeccomposites/jcm0906_49
https://www.nxtbook.com/newpress/jeccomposites/jcm0904_48
https://www.nxtbook.com/newpress/jeccomposites/jcm0903_47
https://www.nxtbook.com/newpress/jeccomposites/jcm0901_46
https://www.nxtbook.com/newpress/jeccomposites/jcm0811_45
https://www.nxtbook.com/newpress/jeccomposites/jcm0810_44
https://www.nxtbook.com/newpress/jeccomposites/jcm0809_43
https://www.nxtbook.com/newpress/jeccomposites/jcm0807_42
https://www.nxtbook.com/newpress/jeccomposites/jcm0806_41
https://www.nxtbook.com/newpress/jeccomposites/jcm0805_40
https://www.nxtbook.com/newpress/jeccomposites/jcm0803_39
https://www.nxtbook.com/newpress/jeccomposites/jcm0801_38
https://www.nxtbook.com/newpress/jeccomposites/jcm0712_37
https://www.nxtbook.com/newpress/jeccomposites/jcm0710_36
https://www.nxtbook.com/newpress/jeccomposites/jcm0709_35
https://www.nxtbook.com/newpress/jeccomposites/jcm0707_34
https://www.nxtbook.com/newpress/jeccomposites/jcm0706_33
https://www.nxtbookmedia.com