Swelling and mechanical behavior of charged poly(N-isopropylmethacrylamide) and poly(N-isopropylacrylamide) networks in water/ethanol mixtures. Cononsolvency effect

Intelligent Poly(N-Isopropylmethacrylamide) Hydrogels: Synthesis, Structure Characterization, Stimuli-Responsive Swelling Properties, and Their Radiation Decomposition

“…A swelling test of p(NiPMAm) and p(NiPAm) in water/ethanol mixtures at room temperature manifested a strong cononsolvency effect occurring on the uncharged and negatively charged hydrogels. The higher swelling degree was observed for pure solvents, and minimal swelling was observed for solvent mixtures [20]. The additional methyl group in the p(NiPMAm) chains slightly affected the kinetics of the helix transition to the globule of the linear chains.…”

Biomimetic Microelectronics for Regenerative Neuronal Cuff Implants

“…(The observed behavior is similar to the response of the PNIPAM hydrogels on ethanol. [ 38 ] ) The shrinkage of the hydrogel results in the unrolling of the device (Figure 1 b2), eventually transforming it into the original planar layout (Figure 1 b3). Adding more water to the solution leads to the swelling of the hydrogel again initiating the self-assembly process (Figure 1 b4,b5).…”

Reentrant phase transition behavior and sensitivity enhancement of a molecular recognition ion gating membrane in an aqueous ethanol solution

“…Poly-NIPAM and its gel show cononsolvency in water-alcohol mixed solvents such as methanol and ethanol [15][16][17][18][19][20][21][22][23][24][25]. For instance, poly-NIPAM is in a coil state in pure water, transitions into a globule state at a certain concentration of methanol in the mixture of water and methanol, and goes back to a coil state at high methanol concentration with increase in alcohol concentration at a constant temperature.…”