Preliminary Sorting Test by Heating: We took small tuft of fibres hold in forceps and brought it slowly up to but not into a small non-luminous flame.

Then observe the condition:

Obs. no.	Behavior	Remark
1.	Does not shrink from flame or melt	Non-thermoplastic

Chemical test:

Obs. no.	Chemical	Behavior		Remark
Obs. no.	Chemical	Cold	Hot	Remark
1.	Phenol	Unchanged	Unchanged
2.	Acetic acid	Unchanged	Unchanged
3.	Nitric acid	Unchanged	Dissolve
4.	Sulphuric acid	Unchanged	Dissolve	May be cotton

Confirmation Test:

Obs. no.	Chemical	Behavior		Result
		Cold	Hot
1.	Sulphuric acid	Unchanged	Dissolve	Cotton

Sample No: 02

Visual properties:

Colour : White
Handle : Soft.

Physical test:

Preliminary sorting test by heating: We took small tuft of fibres hold in forceps and brought it slowly up to but not into a small non-luminous flame.

Then observe the condition:

Obs. no.	Behavior	Remark
1.	Shrink from flame or melts with the formation of bead	Thermoplastic

For thermoplastic fibre:

Bring a small tuft of fibres into a small non-luminous flame –

Obs. no.

Behavior

Odor

Residue

Remark

Melts then burns

(smoky flame)

Aromatic

Glossy brown bead

(not crushable)

May be Polyester

Chemical test:

Obs. no.	Chemical	Behavior		Remark
Obs. no.	Chemical	Cold	Hot	Remark
1.	Sulphuric acid	Unchanged	Unchanged
2.	Dimethyl formamide	Unchanged	Unchanged
3.	Phenol	Unchanged	Dissolve	May be Polyester
4.	Sodium hydroxide	Unchanged	Unchanged

Confirmation Test:

Obs. no.	Chemical	Behavior		Result
		Cold	Hot
1.	Phenol	Unchanged	Dissolve	Polyester

Sample no: 03

Visual properties:

Colour : Bluish white
Handle : Soft

Physical test:

Preliminary sorting test by heating: We took small tuft of fibres hold in forceps and brought it slowly up to but not into a small non-luminous flame.

Then observe the condition:

Obs. no.	Behavior	Remark
1	Shrink from flame or melts with the formation of bead	Thermoplastic

For non- thermoplastic fibre:

Bring a small tuft of fibres into a small non-luminous flame-

Obs. no.

Behavior

Odor

Residue

Remark

Fuses then burns (smoky flame)

Sweetish

Dark colour

Hard bead but brittle

May be Acrylic

Chemical Test:

Obs. no.	Chemical	Behavior		Remark
Obs. no.	Chemical	Cold	Hot	Remark
1.	Phenol	Unchanged	Colour change
2.	Dimethyl formamide	Unchanged	Dissolve	May be acrylic
3.	Nitric acid	Unchanged	Unchanged
4.	Sulphuric acid	Unchanged	Dissolve	May be acrylic

Confirmation Test:

Obs. no.	Chemical	Behavior		Result
		Cold	Hot
1.	Dimethyl formamide	Unchanged	Dissolve	Acrylic

Sample no: 04

Visual properties:

Colour : White
Handle : Harsh

Physical test:

Preliminary sorting test by heating: We took small tuft of fibres hold in forceps and brought it slowly up to but not into a small non-luminous flame. Then observe the condition:

Obs. no.	Behavior	Remark
1	Does not shrink from flame or melt	Non-thermoplastic

For non- thermoplastic fibre:

Bring a small tuft of fibres into a small non-luminous flame –

Obs. no.

Behavior

Remark

Burn with irregular spurting flame, leaving a black inflated, easily powdered residue & emits a smell of burnt hair.

Protein

(Silk & Wool)

Chemical Test:

Obs. no.	Chemical	Behavior		Remark
Obs. no.	Chemical	Cold	Hot	Remark
1.	Phenol	Unchanged	Unchanged
2.	Dimethyl formamide	Unchanged	Unchanged
3.	Sulphuric acid	Unchanged	Dissolve	May be silk
4.	Sodium hydroxide	Unchanged	Dissolve	May be wool

Confirmation Test:

Obs. no.	Chemical	Behavior		Result
		Cold	Hot
1.	Sodium hydroxide	Unchanged	Dissolve	Wool

Conclusion:

I would like to thank our respected teacher for the important instructions. I am also grateful to our lab assistants for their kind help. This experiment helps me to know about the fabric abrasion resistance and its measuring test that is very important for textile testing. I think this will be very helpful in my future life.

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