Synthetic thermo-responsive polymers

Figure U Chemical structures of different types of synthetic thermo-responsive polymers.

Poly(A-vinylamides) are another class of synthetic thermo-responsive polymers. Two of the most common polymers of this class are poly(Al-vinylpyrrolidone) (PVP) and poly(A-vinylcaprolactam) (PVCL) (Figure 1.3). PVCL is a water-soluble nonionic amphiphilic polymer with its basic unit comprising a seven-membered cyclic amide with a polar hydrophilic carboxyl group and an amide group connected directly to a hydrophobic vinyl chain. 

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