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Effects of molecular weight and clay organo‐ions on the melt intercalation of poly(ethylene oxide) into layered silicates
Author(s) -
Shen Zhiqi,
Simon George P.,
Cheng YiBing
Publication year - 2002
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11123
Subject(s) - intercalation (chemistry) , thermogravimetric analysis , materials science , montmorillonite , differential scanning calorimetry , ethylene oxide , nanocomposite , bentonite , polymer , chemical engineering , oxide , polymer chemistry , molecule , inorganic chemistry , organic chemistry , composite material , chemistry , copolymer , physics , metallurgy , engineering , thermodynamics
A useful and desirable method of synthesizing nanoscale organic‐inorganic composites is to intercalate polymers into layered silicates by melt intercalation. Nanocomposites of poly(ethylene oxide) with a sodium montmorillonite and an organoions exchanged bentonite have been prepared by melt intercalation. The effects of polymer molecular weight, the nature of the clay (one unmodified, the other with organo‐ion) and the presence of water molecules in the clay galleries have been investigated. Based on X‐ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA), a distorted helical conformation is thought to describe the conformation of the PEO chains in the hybrid materials.