When the cured film was submerged in distilled water or in an aqueous salt solution, it absorbed water at different amounts and at different rates. The hydrostatic stress in the coating resulting from the swelling of the hydrophilic inclusion eventually led to the morphological instability, which was photographed for subsequent analysis. One problem that arose was that the coating delaminated easily from the substrate (glass slide) due to poor interfacial adhesion. Instability developed in these weakly adhered films are somewhat related to that reported in a beautiful study by Velankar et al , in which folding induced delamination of swelled film from a substrate was observed. In order to carry out the studies reported in this work, strong interfacial adhesion was required. After finding that the commercially available adhesion primers fail to meet the strict demands of the experimental conditions employed here, especially when the glass coated film was immersed in water, we needed to develop our own adhesion primer. This homemade primer uses the basic principles that we reported in an old patent , but its composition is different in many ways. In particular, the primer used in this work consisted of a mixture of hydrogen silsesquioxane, vinyl trimethoxy silane, hydrogen silsesquioxane, 1,2 Bis(triethoxysilyl) ethane, titanium-n-butoxide and a platinum catalyst. This multifunctional primer bonds to glass through the alkoxysilane groups via hydrolysis and condensation, which are present abundantly in the primer. The silicone hydride (-SiH) and vinyl groups of the primer can bond to the vinyl and the silicone hydride (-SiH) groups of the PDMS matrix in the presence of the platinum catalyst, as the primer continues to crosslink and grow its network structure. Titanium-n-butoxide ensures that the alkoxysilanes of the primer composition can hydrolyze by reacting with moisture, and promote the reaction between the silanol groups among themselves as well as with other silanol and other alkoxysilane groups. The primer made from the mixtures of various components is dissolved in chloroform, which has a shelf life of at least a month. However, in the experiment to be reported below, the primer was spin coated on clean glass slides soon after it was prepared (see experimental section). The schematic of Figure depicts our view of how such a primer could improve adhesion of the coating to the glass substrate.