Discussion
Among the options given, choose the most suitable compatibilizer for blending Polyvinylidene fluoride (PVDF) and Acrylonitrile butadiene styrene (ABS).
Answer: C
The most suitable compatibilizer is Polymethyl methacrylate (PMMA).
A compatibilizer must be miscible with, or strongly interact with, both phases. PMMA is one of the few polymers that is miscible with PVDF, through interactions between its ester carbonyl groups and the slightly acidic \(CH_{2}\) hydrogens of PVDF. PMMA is also miscible with the styrene-acrylonitrile (SAN) matrix of ABS over a useful composition range. Placed at the interface, it bridges the two phases and improves adhesion.
SAN mixes with the ABS matrix but not with PVDF. Polybutadiene is the rubber phase of ABS and is incompatible with PVDF. Nylon 6 interacts with neither in a way that would bridge them.
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