ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 21, Number 4
JKCSEZ 21(4)
August 20, 1977 

The adsorption of methylmethacylate on layer silicates containing various interlayer cations has been studied by means of infrared spectroscopy and X-Ray. Several characteristic carbonyl bands of adsorbed methylmethacrylate appeared differently at the region of 1723∼1547cm-1 depending on the species of cation and the dehydration temperature. The carbonyl stretching band shifted about 190cm-1 to lower frequencies has been observed only for polyvalent cations, which has been attributed to >C=O…Mnn+ complex formation. The band appeared at 1703∼1640cm-1 is responsible for hydrogen bonding between carbonyl oxygen and cationic water or cationic hydroxyl group, and the degree of shift indicates good correlation with the polarizing power of the interlayer cations. However, the band appeared at 1723cm-1 has not been correlated with the species of cation but assigned to the carbonyl stretching which reacted with the surface hydroxyl group. On the basis of interlamellar spacing, it is suggested that the molecular plane of MMA molecule is parallel to silicate layers.