Question

What is ignition temperature? Compare ignition temperature of paper and wood?​

Answer 1

Answer:

The flame you see is of course the burning of vapour in air. The vapour that you see when wood or paper burn is produced by the heat of the flame itself (or that of the match you’re using to start the fire), which heats the fuel. The heating of the fuel produces flammable vapour.

Paper consists mostly of cellulose, which is purified wood fibres. The paper-making process removes components from the wood that easily produces flammable vapour. Hence the ignition temperature for wood is lower than that of paper.

Of course a sheet of paper burns more easily than a log of wood, but in that case you also have to take into account the shape and size of the thing you’re trying to burn. A telephone directory does not burn nearly as easily as wood shavings.

Explanation:

Of wood, comprised primarily of cellulose, hemicellulose, and lignin, Hemicellulose ignites at the lowest temperature, Cellulose higher, and Lignin higher yet.

I had thought it was the lignin that vaporized first.

Apparently the lower ingnition temperature of wood is due to the presence of hemicellulose.

As already eluded, the IT of cellulose paper may have be somewhat raised by the flame retardant addition of fin clay particles. I know magazine paper, having an abundance of clay makes for poor kindling.

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Answer 2

$\huge{\mathfrak{\purple{Question}}}$

What is ignition temperature? Compare ignition temperature of paper and wood?​

$\huge{\mathfrak{\purple{Answer}}}$

Ignition temperature of wood depends on the exposure time, moisture, density and the type of wood. Therefore wood doesn’t have a fixed ignition temperature. This is also the case in paper. Paper has ignition temperature between 218–246 °C(233°C is the average of these).

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