Identification of Fibre | Fiber Identification | Identification of Thermoplastic Fibre


Name of the Experiment: Identification of given fiber sample .

Objects:
 
  1. To know about the physical properties of sample fiber.
  2. To know about the chemical properties of sample fiber.
  3. To identify the type of sample fibre. 
Identification of fiber with burn test
Identification of fiber with burn test
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
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.
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.


1 comments:

bharatbook said...

Let’s start with thermoplastic materials. These are known for their ability to melt and remold repeatedly, just like the plastic used in products all around us. They are able to do this because thermoplastic materials are composed of chains of molecules which separate once heat is applied. Common thermoplastics include PVC, polyurethane, polypropylene, TFE, and FEP.
Thermoplastic Industry Analysis

Comment here

Textile Learner is the largest Textile Blog over the net. It is an ultimate reference for textile students. It describes textile articles in comprehensive. It also supplies news on latest textile technology, educational institute news of the world.