Strong tough hydrogels via the synergy of freeze-casting and …
WEBFeb 24, 2021 · Using poly(vinyl alcohol) (PVA) as a model system, a PVA solution was first directionally frozen and then directly immersed in a kosmotropic salt solution (Fig. 1a).
Polyvinyl alcohol - Wikipedia
WEBPolyvinyl alcohol (PVA) is a water-soluble synthetic polymer with various applications in papermaking, textile, adhesive, coating, and 3D printing. Learn about its properties, preparation, uses, and polyvinyl acetals.
Salting-out/sacrificial template strategy for the preparation of ...
WEBJan 15, 2024 · This strategy encompasses the following steps: First, PVA aqueous solution infiltrates the salt layer, occupying the gaps between salt particles. Second, PVA precipitates on the surface of the salt particles, forming the framework of the hydrogel.
Highly Efficient and Salt-Rejecting Poly(vinyl alcohol) Hydrogels …
WEBOct 16, 2022 · The dual polymer network hydrogel (PVA–agar) incorporated with multi-walled carbon nanotubes (MWCNTs) achieved a noticeable evaporation rate of 3.1 kg m –2 h –1 under 1 sun irradiation, owing to its broadband light absorption, intrinsic water channels, and microporous structure that help reduce the latent heat of …
Constructing Kosmotropic Salt‐Compatible PVA Hydrogels for …
WEBApr 9, 2024 · However, the compatibility of PVA-based electrolyte and kosmotropic salt remains a challenge, which shows an unclear mechanism. Here, a “good-to-poor” solvent substitution strategy is adopted to develop a PVA hydrogel electrolyte with good compatibility with kosmotropic salt (ZnSO 4).
Poly(vinyl alcohol) Hydrogels: The Old and New Functional …
WEBNov 30, 2021 · Poly (vinyl alcohol) PVA hydrogel is one of the oldest composite hydrogels. It has been extensively explored due to its chemical stability, nontoxic, good biocompatibility, biological aging resistance, high water-absorbing capacity, and …
A Biomimetic “Salting Out—Alignment ... - Wiley Online Library
WEBMar 22, 2024 · After SALT, the PVA-15 hydrogel showed clear anisotropic structures with enhanced semi-crystallinity and exhibited polymer chain alignment along the stretching direction, which was similar to that of gelatin hydrogel after SALT (Figure 3).
Tough, anti-freezing and conductive ionic hydrogels
WEBAug 5, 2022 · We systematically studied the effect of salt concentrations and the effect of PVA molecular weights on the mechanical properties of the hydrogels.
Strong and tough conductive PVA hydrogels based on the …
WEBOct 17, 2023 · Herein, a synergistic strategy of acetic acid induction and salting-out is proposed to achieve strong and tough conductive poly(vinyl alcohol) (PVA) hydrogels for flexible solid-state supercapacitors.
High-performance ionic conductive poly(vinyl alcohol) hydrogels …
WEBInspired by the mechanism of neural tissue signal transmission, herein, a high-strength and relatively high-sensitivity ionic conductive hydrogel was developed by utilizing the completely physically crosslinked polyvinyl alcohol (PVA) and a simple inorganic salt solution soaking strategy.