Note that, the quantities of the components employed for the preparation of the aerogels varied in the following ranges: 1.56–3.69 (% w/v) PVA, 2.68–6.32 (% w/v) MMT, 0.093–0.216 SDS (% w/v), and the relative amounts with respect to PVA were of about 1.72 for MMT/PVA and 0.06 for SDS/PVA. The bulk densities of the aerogels were calculated by their mass to volume ratios. The typical bulk density of the clay aerogel polymer composites were in the range of 0.02–0.06 g/cm3.