How does the coordination crosslinking network formed by CSP affect the morphology of the NBR/clay/CSP nanocomposites?
Label:chem
Topic
The coordination crosslinking network formed by CSP involves the interaction between the copper ions (Cu²⁺) and the electron-donating nitrogen atoms from the nitrile groups (–C≡N) in NBR. This interaction creates a three-dimensional network that affects the morphology of the composite.
Answer
The coordination crosslinking network formed by CSP results in the formation of larger CSP particles as more rubber macromolecules are attracted to their surfaces during the curing process. This leads to a more interconnected and rigid structure, as observed in the TEM images. The size of CSP particles increases with longer curing times, indicating stronger crosslinking and immobilization of rubber macromolecules. This enhanced crosslinking also leads to a higher glass transition temperature (Tg) and a rougher tensile fractured surface, indicating stronger interfacial interactions.
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