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Describe how to identify the following textile fibres through the burning test (i) Cotton and linen (ii) Wool and silk (iii) Asbestos and acryliciv) Polyester and nylon

Describe how to identify the following textile fibres through the burning test

i) Cotton and linen

ii) Wool and silk

iii) Asbestos and acrylic

iv) Polyester and nylon

Answers

Martin
i) Cotton and linen- Cotton burns with a yellow flame and leaves a grey ash. While burning it emits the smell of burnt paper. Linen burn and leave ashes and emits the smell of burning grasses.

ii) Wool and silk- Wool burns with a spluttering noise and smolders leaving a black ash. It smells like burnt feathers. Silk also splutters and emits the smell of burnt feathers.

iii) Asbestos and acrylic_-Asbestos melts and a forms gummy substance called residue while acrylic shrinks and melts into a tar-like head, burns with a sooty flame leaving a hard round black bead.


iv) Polyester and nylon –It shrinks and melts. It burns with difficulty emitting a smell of celery leaving behind a hard round bead. Nylon repels flame andmelts into a hard bead.
marto answered the question on April 17, 2019 at 12:34

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