investigation into the textile applications of fibres extracted from pandanus utilis
DESCRIPTION
Investigation into the TEXTILE applications OF FIBRES EXTRACTED FROM Pandanus Utilis. Mrs. A. Vaidya Soocheta [email protected] Textile Technology Department University of Mauritius Assoc. Prof. Dr. S. Rosunee ( UoM ) Prof. Dr. M. D. Teli (UICT, Mumbai). - PowerPoint PPT PresentationTRANSCRIPT
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INVESTIGATION INTO THE TEXTILE APPLICATIONS OF FIBRES
EXTRACTED FROM PANDANUS UTILIS
Mrs. A. Vaidya [email protected]
Textile Technology DepartmentUniversity of Mauritius
Assoc. Prof. Dr. S. Rosunee (UoM)Prof. Dr. M. D. Teli (UICT, Mumbai)
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The ‘Pandanus utilis’ plant, commonly known as ‘Vacoas’ in Mauritius, demonstrates a potential as a tangible textile fibre
The fibre presents endless possibilities for textile applications, all of which are just waiting to be harnessed
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The common screwpine (Pandanus utilis) is, despite its name, a tropical tree and not a pine (Common screwpine)
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• Binomial name: Pandanus utilis• Scientific Classification • Kingdom: Plantae• Division: Magnoliophyta• Class:Liliopsida• Order: Pandanales• Family: Pandanaceae• Genus: Pandanus• Species: P. utilis• Common name: Pandano, Vacoas • Place of origin: Madagascar, Mauritius
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DRY LEAVES
FLOWERS
VACOAS
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• The leaves are linear and spiny, with a spiral arrangement on the tree. Care must be taken when handling the leaves because of their sharp spines
• Sun Exposure: Full sun• Growth Habits: Branched evergreen shrub
to 20 feet tall (6 m)• Watering Needs: Regular to abundant
water• Propagation: Seeds
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AIM
Characterise and evaluate the textile potential of Pandanus utilis as a new source for textile fibres
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Currently the leaves of this plant find limited application for making baskets, wall hanging and other decorative items
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LEAVES SLICED
DRIED IN SUN
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BUNDLE OF DRIED LEAVES
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METHODOLOGY
Retting De-gumming of Decorticated Fibre BundlesScouringBleaching Dissolution in Sulphuric Acid
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Mechanical, chemical and enzymatic retting treatments were carried out to optimise the extraction process of the fibres
Retting
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• Water retting• Chemical treatment:
Sodium hydroxide and Sodium carbonate Hydrogen peroxide and Sodium silicate
• Effect of Sodium Hydroxide • Treatment with NaOH and Na2CO3
• Treatment with Oxalic Acid• Treatment with Alkaline Pectinase• Treatment with Acidic Pectinase
Retting- Extract fibres Retting process optimised to separate and remove non-cellulosic material like lignin, pectin
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De-gumming of Decorticated Fibre Bundles• NaOH and Na2CO3
• Oxalic Acid• Alkaline Pectinase• Acidic Pectinase• Enzyme Mixture – Xylanase and Cellulase
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Scouring• Degummed decorticated fibres led to
pronounced loss of strength without much separation of fibres
• Untreated decorticated fibres were used for further scouring with varying concentrations of NaOH and non ionic detergent
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Bleaching
• Sodium Hypochlorite Bleaching• Hydrogen Peroxide Bleaching
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RESULTS
The leaves of young un-branched trees are long and supple, whereas the leaves of older, branched trees are rigid
Leaves are made of fibre bundles in the form of phloem tissue bundle
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Scanning Electron Microscope longitudinal and cross-section observations of their ‘composite’ structure
Cross-section (5X)
Cross-section (10X)
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• Water retting: wet strength greater than the dry strength. As the duration of water retting increases, the strength of the strength of fibre is reduced
Retting
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• Chemical treatment:
NaOH treatment offer cleaner fibre bundles, where the covering sheath of the fibre bundles was removed more efficiently
NaOH H2O2
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• Effect of Sodium Hydroxide Load VS NaOH Concentration
0
2
4
6
8
10
12
0 0.5 1 1.5 2 2.5 3
NaOH concentration (g/l)
Lo
ad
(k
G)
Load
Concentration of alkali increases, the fibre bundles more removal of non-fibrous material. However the strength, weight loss, appearance do not conform to the observation.Attributed to maturity and location of bundles in leaves
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• Treatment with NaOH and Na2CO3
3g/l concentration of NaOH and Na2CO3 at 80o C offered good results.
At 120o C with 7g/l NaOH and 3g/l Na2CO3 showed improved results
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• Treatment with Oxalic Acid• Treatment with Alkaline Pectinase• Treatment with Acidic Pectinase
The samples treated did not show any noticeable separation of fibres from leaves.
To get a combined effect of various parameters, Box-Behnken method was used for optimizations
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De-gumming of Decorticated Fibre Bundles
• NaOH and Na2CO3
• Oxalic Acid• Alkaline Pectinase• Acidic Pectinase• Enzyme Mixture – Xylanase and Cellulase
Degummed decorticated fibres did not lead without much separation of fibres
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Scouring
• 3% NaOH concentration was chosen for scouring as further bleaching would lead to strength reduction accompanied with improvement in appearance.
• Not practical to reduce the strength of the fibre bundles to a large extent at the scouring stage.
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Bleaching
Bleaching
agent
Strength Whiteness
H2O24 4
NaOCl 3 3/4
Samples was assessed against the grey scale5, 4-5, 4, 3-4, 3, 2-3, 2, 1-2, 1.5 = no visual change1 = large visual change
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FTIR 8400S Analysis • Mechanically removed fibre bundle from dry leaves and fibre
bundles obtained after retting, scouring and bleaching were subjected to FTIR analysis to determine the functional groups present.
Functional Groups
Peak Wave no. cm-1 Functional group
1 1050 C=C
2 3200-3000 Aromatic
3 3600-3300 -OH =>3400 strong and
broad
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FTIR analysis of fibre bundles obtained from mechanical and chemical retting, conclude that the scouring and bleaching do not lead to any substantial change enough to be seen in the FTIR analysis.
800100012001400160018002000240028003200360040001/cm
70
75
80
85
90
95
100
%T
Non Rated2Natural Fibre6
Natural Fibre
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Study of the structure and physical properties such as morphological characterisation, their mechanical behaviour in tensile tests, restates its competence as a textile fibre
CONCLUSION
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The research findings demonstrated from the investigations of the fibres extracted from leaves show positive results
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Pandanus utilis (Vacoa) fibres posses’ great potential to be used as fibre.
Due to its impressive strength it can be found useful for technical textile application.
Proper utilisation of this indigenously available natural resource will open-up new avenues for this natural asset
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• Bhattacharya S.D., Shah J. N., (2004), Enzymatic treatment of flax fabric, Textile Research Jr., 74/7, p622-628.
• EarleT., 1947. Retting Method [Online] Available at: <http://www.freepatentsonline.com/2407227.pdf> [Accessed 2 December 2008].
• Evans J. D., Akin D.E. , Morrison W. H., Himmelsbach D. S., Mcalister D. D., Foulk J. A., (2003) Modifying Dew-Retted Flax Fibers and Yarns with a Secondary Enzymatic Treatment, Textile Research Journal, Vol. 73, No. 10, 901-906
• Jarvis M.C., (1988), A Survey of Pectic Content of Non-Lignified Monocot Cell walls, Plant Physiol., 88, p309-314.
• Linda B., Kimmel L.B., Boylston E. K., (2001), Non-traditionally Retted Flax for Dry cotton Blend Spinning, Textile research Jr., 71/5, 375-380.
REFRENCES
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• Kyung Hun Song (2006), Chemical and Biological Retting of Kenaf Fibres, Textile Research Journal, Vol. 76, No. 10, p751-756.
• Patra A.K., (2003), Enzymes For Wet-Processing Pretreatments, Textile Asia, 34/9, p546-573.
• Zhang J., Johansson G., (2003), Effects of acidic media Pre-incubation on flax enzyme retting efficiency, Textile Research Jr., 73/3, p263-267.
REFRENCES
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Remembering the immortal support of special people in my life
Shailesh Kharkar and
Mukesh Soocheta
Mrs. Anagha Vaidya [email protected]