Open AccessIn situ preparation of hetero-polymers/clay nanocomposites by CUAAC click chemistry
Author(s) -
Mehmet Atilla Taşdelen,
Çağatay Altınkök
Publication year - 2021
Publication title -
turkish journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 46
eISSN - 1303-6130
pISSN - 1300-0527
DOI - 10.3906/kim-2007-62
Subject(s) - click chemistry , nanocomposite , azide , ethylene glycol , chemistry , polymer , polymer chemistry , montmorillonite , peg ratio , chemical engineering , cycloaddition , organic chemistry , catalysis , finance , engineering , economics
A series of polymer/clay nanocomposites containing mechanistically two different polymers, poly(ethylene glycol) (PEG) and poly(epsilon caprolactone) (PCL), were prepared by simultaneous copper(I)-catalyzed alkyne-azide cycloaddition click reactions. Both clickable polymers, PEG-Alkyne and PCL-Alkyne, were simultaneously clicked on to azide-functional montmorillonite (MMT-N 3 ) nanoclay to get corresponding PEG-PCL/MMT nanocomposites. The chemical structures of the resulting nanocomposites were verified by following azide and silicone-oxygen bands using FT-IR and characteristic bands of PEG and PCL segments using 1 H-NMR spectroscopy. The combined XRD and TEM analysis confirmed that all PEG-PCL/MMT nanocomposites had partially exfoliated/intercalated morphologies. In addition, the increase of MMT-N 3 loading not only improved the onset and maximum degradation temperatures of the nanocomposites but also their char yields. Furthermore, the incorporation of MMT-N 3 in the polymer matrix did not significantly influence the crystallization behavior of both PEG and PCL segments.