Swelling behavior of chitosan–polyHEA hydrogels in anionic surfactant solutions and their thermo-sensitivity

Polymer–protein interaction, water retention, and biocompatibility of a stimuli‐sensitive superporous hydrogel containing interpenetrating polymer networks

“…This was due to the disentanglement of interpenetrated polymeric chains, destruction of hydrogen bonding between polymer molecules, and increased chain mobility at a higher temperature, which facilitated network expansion. 18 Such temperature responsiveness was also attributed to the high porosity of the SPH-IPNs because more pores would enhance the uptake of water during swelling in comparison with less porous hydrogels. 19 Salt-sensitive Figure 2 shows that an increase in the ionic strength within the range of 0.001-1M yields a significant decrease in the swelling ratio of SPH-IPN 144 .…”

Ionic Surfactants Induce Amphiphilic Tris(Urea) Hydrogel Formation

“…Formation of hydrogel of 1 (9.0 mm) proceeded in the presence of sodium octyl sulfate (5) in the concentration range 20-30 mm (samples 9-11). Sodium decyl sulfate (6) solutions showed similar behavior to SDS (2), with 0.25-5.0 mm solutions giving hydrogels with 9.0 mm of 1 (samples [12][13][14][15][16]. Sodium tetradecyl sulfate (7) solutions only formed hydrogels of 1 (9.0 mm) at low concentrations (0.10-1.0 mm; samples [17][18][19][20].…”

“…[10] Many studies on the effects of surfactants on polymer gels have been reported, and it is clear that electrostatic and hydrophobic interactions influence their swelling and shrinking. [11][12][13][14][15][16] However, studies on the effects of surfactants on the formation of supramolecular gels are limited. [17,18] We recently developed amphiphilic trisA C H T U N G T R E N N U N G (urea) LMWHGs.…”

Theoretical investigation of the effect of NP‐10 concentration on the swelling behavior of AA‐NaAA/NP hydrogel

“…Therefore, NP-10s may crosslink those uncrosslinked linear polymers acting as a physical crosslinker, which results in the decrease of SAP solubility and avoids the washing process after polymerization. Different from the former studies focusing on the absorption property between the linear polymers/hydrogel and the surfactant micelles [12][13][14][15][16][17], the effects of the surfactant micelles on the SAP synthesis were investigated in the present article for the first time. Especially, it is founded that the concentration of NP-10 put a great effect on the SAP swelling ratio when it was introduced in the polymerization system.…”