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FIBER : COTTONPROPERTIES & DESCRIPTION

JINAL SHAH | STU. # : 3458211

ANITA ASWAR | STU. # : 3453059

PROPERTIES COVERED

1. HYGROSCOPIC NATURE : WICKING ABILITY

2. MODULUS : STIFFNESS

RMIT UNIVERSITY

PROGRAM : MASTERS OF FASHION AND TEXTILESCOURSE : TEXTILE FIBER STRUCTURE AND SURFACE TREATMENTS

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COTTON : OVERVIEW

CELLULOSIC STAPLE FIBER FROM A SEED OF PLANT

CHARACTERISTICS

VERSATILE

DURABLE INEXPENSIVE

COMFORTABLE

FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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Cross section of a mature cotton boll

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HYGROSCOPIC NATURE | WICKING

LINEAR POLYMER : APPROX. 5000 CELLOBIOSE UNITS

HYDROXYL GROUP (-OH)

METHYLOL GROUP (-CH2OH )

HYDROGEN BONDS & VAN DER WAALS FORCES

CRYSTALLINITY : 65% -70% | AMORPHOUS : 30% - 35%

FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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VERY ABSORBANT : HYDROPHILIC : WATER LOVING

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COTTON FIBER PROPERTIESRMIT UNIVERSITY

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HYGROSCOPIC NATURE | WICKING CONTINUED.

VERY ABSORBANT : HYDROPHILIC

OH GROUPS IN POLYMER ATTRACT POLAR WATER MOLECULES.

WATER ONLY IN AMORPHOUS REGION

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FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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COHESION + ADHESION = CAPILLARY ACTION (WICKING)

HYGROSCOPIC NATURE | WICKING CONTINUED.

WATER MOLECULE

POLARITY : ONE END POSITIVELY CHARGED & OTHER END NEGATIVELY CHARGED

ADHESION : WATER ATTRACTION ON FIBER SURFACECOHESION : INTERMOLECULAR ATTRACTION BETWEEN WATER MOLECULES

COMBINATION OF THE COHESION BETWEEN WATER MOLECULES AND WATERS

ADHESION TO THE CHARGED FIBER

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EXPERIMENT

COTTON FIBER PROPERTIESRMIT UNIVERSITY

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HYGROSCOPIC NATURE | WICKING CONTINUED.

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STANDARD TESTING

AATCCAMERICAN ASSOCIATION OF TEXTILE CHEMIST AND COLORIST

AATCC 197-2013 : VERTICAL WICKING OF TEXTILES

: HORIZONTAL WICKING OF TEXTILES

COTTON FIBER PROPERTIESRMIT UNIVERSITY

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HYGROSCOPIC NATURE CONTINUED

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HYGROSCOPIC NATURE CONTINUED

DISSIPATES STATIC ELECTRICITY

ALLOWS EXCELLENT DYEABILITY

- AZOIC DYES

- DIRECT DYES- REACTIVE DYES

- SULPHUR DYES

- VAT DYES

FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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MODULUS : STIFFNESS CONTINUED

ASSOCIATED WITH

MODULUS OF ELASTICITY

ELASTIC MODULUS OR

TENSILE MODULUS

RATIO OF THE UNIAXIAL STRESSOVER THE UNIAXIAL STRAIN

SLOPE OF A STRESS-STRAIN CURVE

CREATED DURING TENSILE

FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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MODULUS : STIFFNESS CONTINUED

Slenderness Ratio : COMPRESSION, RUBBING, STRETCHING

High Modulus = HIGH STIFFNESS = Low Slenderness

HAIRINESS, IRREGULARITY AND IMPROPER BINDING INTO YARNS

Low Modulus = LOW STIFFNESS = High Slenderness

FORMS NEPS, DEFLECTIION DURING PROCESSING

FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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MODULUS : STIFFNESS CONTINUED

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IMPORTANCE

AFFECTS FIBER TO YARN PROCESSING

AFFECTS FABRIC PROPERTIES ;

FLEXIBILITY DRAPE

HANDLE

CREASE RESISTANCE

WEAR

FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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MODULUS : STIFFNESS CONTINUED

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FIBER TESTING

STRESS STRAIN CURVE

MEASURING SLENDERNESS RATIO

FABRIC TESTING AUSTRALIAN STANDARD : AS 2001.2.9

APPARATUS : FLEXOMETER

FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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MODULUS : STIFFNESS CONTINUED

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FIBER PROPERTIES : COTTONRMIT UNIVERSITY

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STIFFNESS COMPARISON WITH OTHER FABRICS

MODULUS : STIFFNESS CONTINUED

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HYGROSCOPIC NATURE | WICKING : HIGH

MODULUS | STIFFNESS : MODERATELY HIGH

THANK YOU

COTTON FIBER PROPERTIESRMIT UNIVERSITY

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COTTON PROPERTIES