TRIC Technical Textiles J.E. Mcintyre, Specialty fibers for technical textiles, Department of Textile Industries, ... TRIC Technical Textiles Author: Aasim Ahmed Created Date:

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Focus on Technical Textiles

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Textile Institute of Pakistan

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Techtextil Application Areas

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Product Diversification

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Over 90% of the materials used in the technical sector are based on conventional fibers.

    - J.E. Mcintyre, Specialty fibers for technical textiles, Department of Textile Industries, University of Leeds, Notes

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Strength of textile fibres

    How many kilograms can a fiber with 1 mm2 cross-section hold?

    -T. Hongu, Phillips Glen O., New Fibers, 2nd Edition (1997) Woodhead Publishing Ltd.

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Performance Properties

    Tensile strength

    Elasticity

    Creep

    Specific gravity

    Antimicrobial properties

    Fire retardancy

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Product Development Model

    Potential application/ alternate required

    Suggestions for alternate or feasible materials

    Research

    Required properties

    Availability

    Cost

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Case Study; Focus on MaterialsMedical Textiles

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    ExudateBlood

    SkinWound

    Non Adherent Net

    Absorptive Fleece

    Adhesive

    Diffusion Layer

    Wound Dressing Model

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    ExudateBlood

    SkinWound

    Non Adherent Net

    Absorptive Fleece

    Adhesive

    Diffusion Layer

    Wound Dressing Model

    The functions of these materials are to provide protection against infection, absorb blood and exudate, promote healing and, in some instances, apply medication to the wound.

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Layer analysisAbsorptive Fleece

    Required Properties High Absorbency Bulky Material Non-toxic Antimicrobial

    characteristics (added advantage)

    Suggested Material Cotton Viscose

    Rayon Lyocell Bamboo

    Non Adherent Net

    Required Properties Non-toxic Little or no absorbency Filament fiber Antimicrobial

    characteristics (added advantage)

    Suggested Material Silk Polyamide PET Polyolefin Viscose

    Rayon Bamboo

    Diffusion Layer

    Required Properties Reasonable Strength Flexible Porous

    Suggested Material PET Polyamide Polypropylene Viscose

    Rayon Bamboo

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    How can these materials be converted into wound dressing?

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Case Study; Focus on MaterialsGeo Textiles

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n14

  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n14

  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n14

  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n14

  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n14

  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Required properties (high priority) Biodegradable Flexible Effect of water UV light Climatic effects Cheaply available

    Secondary properties Strength Elongation Chemical resistance Puncture resistance Permeability Quality assurance and control

    Geotextiles for erosion control

    - Horrocks A. and Anand S. C., Handbook of Technical Textiles, Woodhead Publishing in association with the Textile Institute, 2000.

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Possible Fibres Flax, bast fiber

    Inextensible fiber, more elongation obtained when dry. One of the highest tensile strength and modulus of elasticity of the natural vegetable fibers. Density same as synthetic polymers, thus used as alternative reinforcement to glass, aramid and carbon in composites. Good conductor of heat.

    Hemp (Sunn), bast fiber Not weakened or quickly rotted by water or salt water. No pesticides

    required for growth. Stronger, coarser and stiffer than most other vegetable fibers.

    Jute, bast fiber Holds 5 times its weight of water. Cheap and used in great quantities, high

    initial modulus, but very little recoverable/ elasticity (woody fibre); exhibiting brittle fracture, having small extension at break. Poor tensile

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Possible Fibres Abaca (Manila), leaf fiber

    Good water-resisting properties, hydroscopic, not affected by salt water. Strong and sufficiently flexible to provide a degree of give when used in ropes where strength, durability and flexibility are essential.

    Sisal, leaf fiber Cheap, stiff, inflexible, high strength and good lustre. Sisal fibre is equivalent

    hand or machine stripped.

    Coir, seed fiber Coir is resistant to degradation by sea water, endures sudden pulls, that

    would snap the otherwise much stronger ropes such as hemp. Naturally coarse, suitable for use in sea water, high lignin content makes it resistant to weathering Extremely abrasive and rot resistant (high % of lignin) under wet and dry conditions and retains a high percentage in tensile strength.

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Although, it is not suggested, these natural geotextiles would be a universal panacea;

    they would have a significant impact on the economy of developing countries.

    - Horrocks A. and Anand S. C., Handbook of Technical Textiles, Woodhead Publishing in association with the Textile Institute, 2000.

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Do you think cotton can be used?

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    How can materials be converted into wound dressing?

    To make technical products materials have to be coupled with production processes such as knitting, weaving, warp knitting, braiding etc.

    Can cotton be used to make geo-textiles? Yes, but it will have to be treated and finished such that it suits

    requirements.

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    Materials

    Processing

    Technical Textiles

    Machines Finishing

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  • T e x t i l e R e s e a r c h & I n n o v a t i o n C e n t r e , T e x t i l e I n s t i t u t e o f P a k i s t a n

    TRIC contact details

    Textile Research & Innovation Centre, tric@tip.edu.pk.

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