3. To identify the type of sample fibre.
Visual properties:
Colour: White
Handle: Harsh
Physical test:
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Wednesday, May 16, 2012
Identification of Fibre | Fiber Identification | Identification of Thermoplastic Fibre
3. To identify the type of sample fibre.
Visual properties:
Colour: White
Handle: Harsh
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 |
1 | 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 | |
Cold | Hot | |||
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 |
Visual properties:
Colour: White
Handle: Soft.
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 |
1. | Melts then burns (smoky flame) | Aromatic | Glossy brown bead (not crushable) | May be Polyester |
Chemical test:
Obs. no. | Chemical | Behavior | Remark | |
Cold | Hot | |||
1. | Sulphuric acid | Unchange | Unchange | |
2. | Dimethyl formamide | Unchange | Unchange | |
3. | Phenol | Unchange | Dissolve | May be Polyester |
4. | Sodium hydroxide | Unchange | Unchange | |
Confirmation test:
Obs. no. | Chemical | Behavior | Result | |
Cold | Hot | |||
1. | Phenol | Unchange | Dissolve | Polyester |
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.
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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