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Preparation of a Kaolinite-Polyacrylamide Intercalation Compound

Published online by Cambridge University Press:  02 April 2024

Yoshiyuki Sugahara ,
Shigeo Satokawa ,
Kazuyuki Kuroda  and
Chuzo Kato
Yoshiyuki Sugahara
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo 3, Shinjuku-ku, Tokyo, 169 Japan
Shigeo Satokawa
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo 3, Shinjuku-ku, Tokyo, 169 Japan
Kazuyuki Kuroda
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo 3, Shinjuku-ku, Tokyo, 169 Japan
Chuzo Kato
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo 3, Shinjuku-ku, Tokyo, 169 Japan
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Abstract

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Acrylamide has been polymerized between the layers of kaolinite by heat treatment. Acrylamide monomer was first intercalated by the displacement reaction between a kaolinite-N-methylformamide (NMF) intercalation compound and a 10% acrylamide aqueous solution. The resulting intercalation compound showed a basal spacing of 11.3 Å. Infrared (IR) spectroscopy and 13C nuclear magnetic resonance spectroscopy with cross polarization and magic angle spinning (13C CP/MAS-NMR) indicated the replacement of NMF by acrylamide. IR spectroscopy also showed the formation of hydrogen bonds with the hydroxyls of kaolinite. When the kaolinite-acrylamide intercalation compound was heated at 300°C for 1 hr, the basal spacing increased to 11.4 Å, and IR and 13C CP/MAS-NMR showed the disappearance of C=C bonds, indicating the polymerization of acrylamide. The heat-treated kaolinite-acrylamide intercalation compound was resistant to 30 min-washing with water, whereas the untreated kaolinite-acrylamide intercalation compound collapsed after the same treatment, an observation consistent with acrylamide polymerization between the layers of kaolinite. IR spectroscopy revealed that polyacrylamide was hydrogen bonded to kaolinite, but in a manner different from the hydrogen bonding of acrylamide.

Keywords

AcrylamideInfrared spectroscopyIntercalationKaoliniteNuclear magnetic resonancePolymerizationThermal treatment
Type
Research Article
Information
Clays and Clay Minerals , Volume 38 , Issue 2 , April 1990 , pp. 137 - 143
Copyright
Copyright © 1990, The Clay Minerals Society

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