2018
DOI: 10.1039/c8tb01971a
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Controlled shape deformation of bilayer films with tough adhesion between nanocomposite hydrogels and polymer substrates

Abstract: A bilayer film prepared by one-step polymerization exhibits self-bending and self-helixing behaviours by adjusting its geometry parameters.

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Cited by 23 publications
(15 citation statements)
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“…The hydrogels are typically layered by spin coating, drop‐casting or nozzle printing, which afford control over the thickness of the layers. Researchers combine two or more hydrogel layers with different mechanical and swelling properties in a spatially predefined sequence and orientation . An example is the pairing of an active soft hydrogel layer capable of swelling with a relatively stiff passive layer with relatively nonswelling characteristics .…”
Section: Principlesmentioning
confidence: 99%
“…The hydrogels are typically layered by spin coating, drop‐casting or nozzle printing, which afford control over the thickness of the layers. Researchers combine two or more hydrogel layers with different mechanical and swelling properties in a spatially predefined sequence and orientation . An example is the pairing of an active soft hydrogel layer capable of swelling with a relatively stiff passive layer with relatively nonswelling characteristics .…”
Section: Principlesmentioning
confidence: 99%
“…With increase of the cycling times of freezing and thawing, the adhesion strength was slightly decreased. Adhesion is the macroscopic expression of the interactions between contacting interfaces . The adhesive force between hydrogels and gelatin coating was mainly generated by hydrogen bond interactions caused by amino groups and hydroxy groups.…”
Section: Resultsmentioning
confidence: 99%
“…The samples used were 20 mm in length, 12 mm in width, and 1–1 mm (polyVBIPS-polyBA) in thickness. The interfacial strength (Γ) was defined as Γ = F / w , where F is the average in peeling process, and w is the width of the sample . The equilibrium water contents (EWC,%) of the samples were calculated as EWC (%) = ( m w – m d )/ m w × 100, where m w is the weight after swelling and m d is the weight after drying.…”
Section: Experiments Sectionmentioning
confidence: 99%
“…The interfacial strength (Γ) was defined as Γ = F/w, where F is the average in peeling process, and w is the width of the sample. 24 The equilibrium water contents (EWC,%) of the samples were calculated as EWC (%) = (m w − m d )/m w × 100, where m w is the weight after swelling and m d is the weight after drying. Solvents contact angles were recorded with OCA20 video-based optical contact angle measuring system.…”
Section: ■ Introductionmentioning
confidence: 99%
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