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Influence of Layered Double Hydroxides on the Curing of Carboxylated Nitrile Rubber with Zinc Oxide
Author(s) -
Thakur Varun,
Das Amit,
Mahaling Ram N.,
Rooj Sandip,
Gohs Uwe,
Wagenknecht Udo,
Heinrich Gert
Publication year - 2009
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900083
Subject(s) - vulcanization , layered double hydroxides , materials science , elastomer , curing (chemistry) , natural rubber , nitrile , ionic bonding , nitrile rubber , zinc , chemical engineering , oxide , nanocomposite , composite material , polymer chemistry , adsorption , organic chemistry , ion , chemistry , metallurgy , engineering
Unmodified (LDH) and modified (mLDH) layered double hydroxides have been added to gum and ZnO‐cured carboxylated nitrile rubber (XNBR). It was observed that both LDH and mLDH inhibit the formation of ionic cross‐links between XNBR and ZnO quite significantly, as is evident from DMA and FT‐IR studies. The suppression of ionic cross‐links formation was also reflected in the mechanical properties of the resulting composites. A tentative sketch has also been suggested for the possible mechanism involved in the inhibition of ionic cross‐links by LDHs. X‐ray diffraction and STEM studies were performed to see the dispersion of LDH's in the elastomer matrix.