Chainlength effects on interactions of polyvinylpyrrolidone with low and high molecular compounds

Poly(vinylpyrrolidone) – A Versatile Polymer for Biomedical and Beyond Medical Applications

“…The addition of NaCl does not affect the hydrogen bonds formed between PVP and PAAc [28] , in aqueous media occuring two types of equilibrium processes: intramolecular dissociation of PAAc and formation of hydrogen bonds between undissociated carboxylic groups of PAAc and carbonyl groups of PVP. Thus, a thermodynamically stable IPC is formed if the polyacid and PVP chains are long enough [29] . Depending on the nature of interacting macromolecular component, IPC stability depends on thermodynamic quality of the solvents, temperature, and degree of ionization [30] .…”

Synthesis and characterization of pH-sensitivity semi-IPN hydrogel based on hydrogen bond between poly(N-vinylpyrrolidone) and poly(acrylic acid)

“…If the crosslinks are based on reversible physical interactions, such as hydrogen bond, ionic bond or van der waal' bond, which can be made or broken when the surroundings change, the responses of the hydrogels to external stimuli are often reversible [10]. In addition to conventional methods, hydrogels have also been constructed from interpolymer complexes and interpenetrating networks [11,12].…”

Quaternary (liquid+liquid) equilibria of aqueous two-phase polyethylene glycol, poly-N-vinylcaprolactam, and KH2PO4: Experimental and the generalized Flory–Huggins theory

“…In general, thermosensitive polymers can be classified into different groups [14] (a) poly-N-alkyl substituted acryl amides such as poly-N-isopropylacrylamide and (b) poly-N-vinylalkylamides such as poly N-vinylcaprolactam. PVCL can be used as a protein carrier in the polymer matrix with chemically bonded protein [15] Also it can be used as one of the separate components in alginate based gel particles [16]. There is a strong interest in use of PVCL and several studies have been reported on the phase behavior of PVCL in water [17,18].…”