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Interaction of functional groups of gelatin and montmorillonite in nanocomposite
Author(s) -
Xu Shu Wei,
Zheng Jun Ping,
Tong Lei,
Yao Kang De
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23435
Subject(s) - gelatin , montmorillonite , nanocomposite , thermogravimetric analysis , fourier transform infrared spectroscopy , materials science , hydrogen bond , intercalation (chemistry) , composite material , polymer chemistry , polyelectrolyte , chemical engineering , polymer , chemistry , molecule , organic chemistry , engineering
As an amphoteric polyelectrolyte, gelatin could intercalate into the galleries of montmorillonite (MMT). In this paper, sodium laurate/MMT composites and sodium laurate/dehydroxylated MMT composites were introduced as low molecular simulation to investigate the interaction functional groups of gelatin and MMT. The composites were characterized by X‐ray diffraction (XRD), Fourier transform infrared spectra (FTIR), thermogravimetric analysis (TGA) and 13 C nuclear magnetic resonance ( 13 C NMR). Furthermore, the effect of interaction between gelatin and MMT on the mechanical properties of the composites was investigated. The results indicated that COO − , not COOH, in gelatin chains could interact strongly with the MMT sheets. The reactive sites on MMT were hydroxyl groups, which could interact with COO − in gelatin chains by forming hydrogen bonds. The gelatin/MMT composites prepared in alkalic media have better mechanical properties due to stronger interaction. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1556–1561, 2006