Clear blends of chitosan acetate salt with poly (N-vinyl-2-pyrrolidone) (PV
P) made from aqueous solutions look to be miscible on appearance. IR spectr
a investigated the carbonyl-hydroxyl hydrogen bonding between chain-chain i
n the blends and thus evidenced the compatibility of two polymers on a mole
cular level. The IR spectra, DSC also explored the interaction changing dur
ing the temperature increasing and indicated that a significant conformatio
nal change took place.