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Spectroscopic, Microscopic, X‐Ray Diffraction and Thermal Stability Studies of Stearic Acid Modified Hydrotalcite Formed through Memory Effect
Author(s) -
Daniel Saju,
Alapat Padmanabhan,
Kalarikkal Nandakumar,
Thomas Sabu
Publication year - 2021
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.202000277
Subject(s) - raman spectroscopy , hydrotalcite , layered double hydroxides , materials science , stearic acid , stearate , fourier transform infrared spectroscopy , chemical engineering , surface modification , viologen , nanocomposite , polymer , thermal stability , thermal analysis , thermogravimetric analysis , hydroxide , analytical chemistry (journal) , chemistry , nanotechnology , inorganic chemistry , organic chemistry , composite material , optics , physics , thermal , meteorology , engineering , catalysis
Organic modification of layered double hydroxide (LDH) (hydrotalcite) is a remarkable and a very essential step in the field of fabrication of exfoliated LDH polymer nanocomposites for novel multifaceted applications. In this research work, stearic acid (SA) modification of LDH has been conducted successfully by memory effect. The modification of LDH has been confirmed by atomic force microscopic analysis, scanning electron microscopic analysis, transmission electron microscopic analysis, X‐ray diffraction analysis, Fourier transform infrared spectroscopic analysis, X‐ray photo electron spectroscopic analysis, Raman spectroscopic analysis, energy dispersive X‐ray microanalysis, and thermogravimeric analysis. The basal spacing in the SA‐modified LDH is found to be 5.03 nm, which is almost double the value of 18 C‐C lengths in SA. This indicates the formation of a bilayer of stearate ion in the interlamellar region of LDH in the modified form. Hence, this work is novel as it paved a breakthrough for making organic‐inorganic hybrid for drug delivery, gene delivery, controlled pesticide release, etc. with the prolonged delivery time as the interlayer region consisted of double the number of stearate ions in monolayer intercalated LDH.