Chinese researchers not too long ago demonstrated an modern chemical technique for engineering various layered hydrogels with moist and slippery options at room temperature.
This technique, often known as “ultraviolet-triggered surface catalytically initiated radical polymerization (UV-SCIRP),” was proposed by Prof. Zhou Feng’s group from the Lanzhou Institute of Chemical Physics (LICP) of the Chinese Academy of Sciences (CAS).
Numerous pure supplies and biotissues-from nacres to muscle and arteries-possess microstructures with layered compositions and aligned structure which are very useful as a result of they’ve distinctive materials properties and fascinating multifunctionality.
For this cause, establishing layered structural hydrogels which are moist and slippery, anisotropic and hierarchical has attracted the curiosity of the biomedical, robotics and tender gadget fields resulting from their pure tissue-like properties.
Formation of pure, layered biotissue is a time-dominated residing rising course of by which the micro-network construction, geometry, thickness, composition and mechanical properties of every layer could be finely managed.
“For current preparation techniques, they are typically physical manufacturing routes, like mechanically building a wall by continuously stacking bricks,” mentioned Dr. Ma Shuanhong, corresponding creator of the research.
By adopting the redox mechanism, the researchers generated Fe2+ catalysts in situ on the floor of the hydrogel substrate, leading to quick radical polymerization of monomer on the solid-liquid interface, together with the controllable development of an interpenetrated single or multi-layered hydrogel community coating at room temperature.
According to the researchers, reiterative software of UV-SCIRP permits fabrication of multi-layered hydrogels with various parts and layer options. The surface-catalyzed gelation permits the tactic to effectively assemble complicated hydrogel patterns, non-flat arbitrary-shaped hydrogel objects and blood vessel-like intricate multi-layered hydrogel tubes.
The UV-SCIRP technique seems appropriate for effortlessly modifying the floor wettability and lubricating properties of hydrogels supplies. It may have a transformative impression within the fields of polymer science and floor/interface science.
“It offers a completely new way to develop bio-inspired, layered hydrogel structures with wet and slippery features that are suitable for a wide range of applications including tissue-like models, soft robots and intelligent devices,” mentioned Prof. Zhou.
This research was revealed on-line in Matter.
Shuanhong Ma, Continuously Growing Multi-layered Hydrogel Structures with Seamless Interlocked Interface, Matter (2021). DOI: 10.1016/j.matt.2021.11.018. www.cell.com/matter/fulltext/S2590-2385(21)00580-4
Chinese Academy of Sciences
New technique to manufacture tissue-like moist and slippery hydrogels (2021, December 9)
retrieved 9 December 2021
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