Blend of chitosan acetate salt with poly(N-vinyl-2-pyrrolidone): Interaction between chain-chain
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- Cao, S., Shi, Y. & Chen, G. Polymer Bulletin (1998) 41: 553. doi:10.1007/s002890050401
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Clear blends of chitosan acetate salt with poly (N-vinyl-2-pyrrolidone) (PVP) made from aqueous solutions look to be miscible on appearance. IR spectra investigated the carbonyl-hydroxyl hydrogen bonding between chain-chain in the blends and thus evidenced the compatibility of two polymers on a molecular level. The IR spectra, DSC also explored the interaction changing during the temperature increasing and indicated that a significant conformational change took place.