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Development of medical apparel from wrightia tinctoria fibre
Medical textiles

Development of medical apparel from wrightia tinctoria fibre

Written by: B Mothilal, Dr.G Ramakrishnan

Introduction


Wrightia tinctoria R. Br. fibre is used for design and development of non-woven medical apparel. Wrightia tinctoria is also known as the psoriasis curative fibre obtained from dead seed of Wrightia tinctoria plant. The fibre has excellent medicinal properties and protects from skin diseases and other common ailments.


Southern part of India has Wrightia tinctoria (Appocynaceae Family) that belong to genus Wrightia. It contains many important chemicals such as triterpenoid with cycloartenone, cyloeucalenol etc. It is pest resistant and also fights against drought. The wrightia tinctoria dead seed fibre content has been identified by bio chemical methods. Digital Projection Microscope is interfaced with computer to project the fibre longitudinal view on wide computer screen for easy analysis.


Tensile and elongation properties of fibres are influenced by the internal structure of the fibres. Individual fibres of a given length and under specified tension are subjected to vibration at resonance frequency. The linear density is determined from the conditions of the resonance state i.e. the resonance frequency, the length of the fibre and the tensioning force. The morphology of wrightia tinctoria was examined using scanning electron microscopic. Swelling and dissolution of fibre in non-derivating solvents and the description of the achieved dissolution state are important task.


Wrightia Tinctoria


Wrightia tinctoria R. Br., (Apocynaceae) (W. tinctoria), a small deciduous tree is known by various names example Ivory tree, Easter tree, Sweet indrajao etc have medicinal properties and are used by local people in India.

Taxonomy of Wrightia Tinctoria


Family

Apocynaceae

Sub Family

Apocynoideae

Tribe

Wrightieae

Genus

Wrightia

Species

Tinctoria

Order

Gentianales

Season

Summer

Colour of Flower

White

Table 1: Taxonomy of Wrightia Tinctoria


Traditional uses of W.Tinctoria


Fresh leaves of W.Tinctoria are pungent and when crushed can be used for tooth ache, snakebite and psoriasis. Many of the medicinal properties are to be substantiated by clinical trials in humans. Table 2 summarizes ethno medicinal uses reported for W. tinctoria.


Plant part

Method of preparation

Use









Leaf

Paste

Skin diseases; external and internal application

Paste

Toothache and swelling gums

Pounded leaves mixed with coconut oil

Eczema, psoriasis and other skin diseases

Unspecified

Skin disease, wound healing

Juice mixed with lime and turmeric powder

Swellings

Infusion from coconut oil

Chronic wounds (veterinary medicine)

Paste with Santalum album and Allium cepa

Chronic wounds (veterinary medicine)

Juice

Jaundice

Oil obtained from the paste of leaves of W. tinctoria and Azadirachta indica

Eczema

Half a teaspoon of dried leaf powder

Respiratory ailments





Bark

Stem bark crushed with those of Ailanthus excelsa, paste applied daily once

for 3

Boils, wounds

Powdered and mixed with coconut oil

Wounds

Unspecified

Galactogogue, abdominal pain

Unspecified

Antipyretic


Unspecified

Cure skin diseases, wounds

Unspecified

Antidote for snake poison

Decoction

Antidysenteric, antidiarrhoeal and antihaemorrhagic agent

Paste

Skin diseases, ringworm and in leprosy

Infusion

Stomach disorder


Stem

Unspecified

Toothbrush

Decoction

Cure stomach disorder

Latex

Unspecified

Skin disease, wound healing

Root

Decoction

Epilepsy

Unspecified

Laxative

Decoction

Cure stomach disorder

Whole plant

Unspecified

Antioxidant, Antinociceptive



Seed

Powdered and mixed with coconut oil

Wounds

Unspecified

Piles, worm infestation and pain

Juice

Indigestion

Unspecified

Decoction

Wounds

Table 2: Ethno medicinal uses of W. tinctoria

Development of non-woven medical apparel

       • Methodology

Fibre collection


The naturally dried seed pods are collected from the plant which is allowed to decay by exposing in sunlight or otherwise break the seed pods manually by applying external force. Once the seed gets separated from the seed pods then the fibre is separated from the seeds through plugging process.


Estimation of Fibre Content


Content of Fibre table

Contents

%

Cellulose

42

Hemicelluloses

23

Lignin

14

Microscopic Appearance



Nonwoven (formed) fabrics


To differentiate them from felt, other nonwovens are defined by the 'American Society for Testing and Materials' as fabrics constructed from fibres held together by mechanical, chemical and thermal bonding. The history of nonwovens began in the 1930s when a few textile firms began experimenting with cotton waste fibres.


Significant commercial production began during World War II. The development of manmade fibres and bonding agents gave added impetus to this segment of the textile industry. In the course of this development, cognizance was taken of the detractive and even negative connotation of the term "nonwovens". Consequently, reference to these materials as formed fabrics is also used.


Methods of manufacture


The processing and manufacturing of nonwoven fabrics vary with the fibres, methods of laying the fibres, and the bonding agents used. The fibres include cotton, wool, rayon, acetate, nylon, polyester, acrylic, modacrylic, polypropylene, and polyethylene. A combination of fibres can be employed. The staple, which is usually not waste, ranges from about 1/12 to 6 inches (2- 150 mm) in length. Generally, the manmade fibres are 1. 5 to 6 denier; however, for some specialized surgical and industrial purposes, the range may be from about 5 microdenier to 10 denier, depending upon the porosity and weight desired. The fibres are processed through a series of opening, conditioning, and blending operations. Layers of webs of fibre are then formed. Adhesion of the fibres is accomplished by fibre friction, heat, addition of an appropriate resin, latex or other bonding agent.


Finishing of nonwoven fabrics: Finishing techniques for nonwoven fabrics are limited. Dyeing is usually done after the fabric has been formed. They may be calendared for smoothness or embossed for textured effects. They may also be printed or flocked. Softness may be added to improve the hand.


Testing: The developed medical apparel will be tested for various physical, mechanical and anti-microbial testing. Skin irritation test and other related test are done using standard test equipments.


Conclusion


The results from the above test conducted on the developed fabric will be analyzed and reported. The developed fabric will be of immense use to the society.

References:


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About the author

Dr. G. Ramakrishnan is currently working as Senior Associate Professor in Department of Fashion Technology, and Coordinator of KCT-TIFAC CORE, Kumaraguru College of Technology, Coimbatore. He has 29 years of experience that includes industry and academics.


Acknowledgement

The authors express their sincere thanks to Management of Kumaraguru College of Technology, Coimbatore and Textile Research Centre, KCT-TIFAC-CORE in Textile Technology and Machinery, of Kumaraguru College of Technology, Coimbatore, India for permitting to process all the samples in their advanced manufacturing laboratory.

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