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Journal of the Korean Chemical Society (JKCS)

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

 
Title
An Infrared Study of Complexes of Methylmethacrylate with Cations on the Interlamdellar Surfaces of Layer Silicates

적외선분광법에 의한 층상규산염의 층간표면상 양이온과 Methylmethacrylate의 착물 연구
Author
Jong Taik Kim, Jong Rack Sohn

김종택, 손종락
Keywords
Abstract
여러 종류의 층간 양이온을 가지고 있는 층상 규산염상에서 일어난 methylmethacrylate의 흡착에 관하여 적외선 분광법과 X-ray로 연구하였다. 흡착된 methylmethacrylate의 여러 개의 특성 carbonyl band가 양이온의 종과 탈수온도에 따라서 다르게 1723∼1547cm-1의 범위에서 나타났다. 190cm-1정도로 shift한 carbonyl 신축 band는 polyvalent 양이온에만 나타났으며 > C=O…Mn+형 착물형성 기인하는 것이었다. 1703∼1640cm-1 에서 나타난 band는 carbonyl 산소와 양이온 수 또는 양이온 수산기와의 수소결합에 의한 것이었고 shift한 정도는 층간 양이온의 polarizing power와 좋은 상호 관계를 이루었다. 그러나 1723cm-1에서 나타난 band는 양이온의 종과는 상호 관계가 없었으며 carbonyl ,산소와 표면 수산기와의 상호 작용으로 인한 것이었다. Interlamellar spacing을 계산해 본 결과 methylmethacrylate의 분자평면은 규산염의 층과 평행하게 놓여 있는 것 같다.

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.

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246 - 255
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