A tough, stretchable, and extensively sticky hydrogel driven by milk protein

Abstract

A tough and adhesive hydrogel assisted by milk protein was proposed, which could adhere to diverse surfaces of various materials.

Partial substitution of nitrocellulose by polyurethane resins in flexographic ink concentrates

“…The FTIR spectra of both the standard (NC) and overlaid (NC/PU) inks (Figures 7 and 8) did not show the appearance or disappearance of bands related to the conditions studied, except for the samples exposed to milk, that presented a peak at~3,300 cm −1 associated probably to the amino groups of casein protein that stayed over the film. [19] Two-dimensional and three-dimensional AFM images of the surface of the standard (NC) and overlaid (NC/PU) inks were obtained before and after their exposure to UV light for 20 hr (Figures 9 and 10), water for 2 hr, and milk for 2 hr (Figures S2 and S3). The mean roughness (R a ) and mean square deviation (R q or rms) were determined from a scanned area of 5 μm × 5 μm using the software of the SPM equipment.…”

Use of a crosslinked casein micelle hydrogel as a carrier for jaboticaba (Myrciaria cauliflora) extract

“…Use of hydrogel systems in biomedical applications such as tissue engineering, delivery systems and absorption materials has been studied over the years (Ahmed, 2015;Caló & Khutoryanskiy, 2015). Hydrogels can be made from a wide range of polymers, such as proteins (Khodaverdi, Maftouhian, Aliabadi, & Hassanzadeh, 2018;Li, Fu, & Zhang, 2014;Loewen, Chan, & Li-chan, 2018), carbohydrates (Bera & Dutta, 2017) and polymer combinations (Ozel, Cikrikci, Aydin, & Oztop, 2017;Zhang, Decker, & McClements, 2014;Ma et al, 2016;Xu, Fan, Duan, & Gao, 2018). Polymer toxicity levels are determining factors when it comes to using hydrogels in live organisms.…”

Supramolecular hydrogels prepared from fluorescent alkyl pyridinium acrylamide monomers and CB[8]

“…57 The AAm control hydrogel presented a less pronounced strain overshoot, which has been observed by others. 58,59 This behaviour, observed in AAmbased hydrogels, may be related to the presence of an additional structure associated by hydrogen bonding that imposes some resistance to deformation. 57 In all other gels a strain thinning behaviour is observed, in which as strain is increased polymer chains disentangle to align with the direction of flow.…”