In addition, the generation of water molecules considered by ‘chemical action theory’ as well as ‘gas
dilution theory’ could be rationalized [31].
Ultimately the results of the third and fourth rows of Table 1 show under the optimum limit addition of this salt, a decrease in the burning time and an increase in the burning rate was the outcome.
This observation is in favor of the literature stated by Reeves and Hammons [33].
They recognized that the inefficient quantities of certain flame-retardants accelerate the burning process of fabrics, i.e. by deposition of inadequate amounts of some flame-retardants, the imperfect rapid burning deformation occurred and a decrease in burning time and an increase in the burning rate were the resultant.
Plausibly this is due to the relative rigidity donated to the cotton substrate by the use of some additives such as the afore-mentioned salt.
It seems that the heat feedback into the bulk’s surface of the cellulosic substrate makes it susceptible to participate in a rapid, uncompleted surface combustion.
However if sufficient quantities of the above-mentioned salt are deposited into the cotton fabric, the char conducts away the heat from the cellulosic substrate at a comparable rate, which is being supplied by the flame, so the flame-retardancy is achieved.