Facile and eco-friendly PVA nanocomposites as a photo-luminescent: Anti-counterfeiting, LED and wettability applications

Kalaburgi, Bhimanagouda; B, Daruka Prasad; R, Lavanya D.; Sharma, S.C.; Srikanth, Chivukula; P, Darshan G.; M, Nasreen Taj; Premkumar,; Nagabhushana, H.

doi:10.1016/j.ceramint.2022.09.344

Cited by 6 publications

(2 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 These films are used for flexible electronics in flexible photovoltaics or sensors, 2 fabricating membranes, e.g., to filter water from dust, salt, or heavy metals, 3 or anticounterfeiting materials. 4,5 The macroscopic properties required for these applications are inherently determined by the hybrid materials' morphologies; for example, they influence surface energy. The surface energy directly affects the usability of the porous thin films because it influences the surface's water adhesion and solvent imbibition properties of porous films.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Hybrid porous thin films, composed of a porous template and polymer or inorganic colloids, have found diverse applications across various fields due to their unique properties . These films are used for flexible electronics in flexible photovoltaics or sensors, fabricating membranes, e.g., to filter water from dust, salt, or heavy metals, or anticounterfeiting materials. , The macroscopic properties required for these applications are inherently determined by the hybrid materials’ morphologies; for example, they influence surface energy. The surface energy directly affects the usability of the porous thin films because it influences the surface’s water adhesion and solvent imbibition properties of porous films. , Depending on the material’s topology, the morphology changes during a treatment. , Both the deposition of colloids and the annealing process above a critical temperature alter the morphology of a material .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Poly(sobrerol methacrylate) Colloidal Inks Sprayed onto Cellulose Nanofibril Thin Films for Anticounterfeiting Applications

Harder,

Betker,

Alexakis

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

The colloidal layer formation on porous materials is a crucial step for printing and applying functional coatings, which can be used to fabricate anticounterfeiting paper. The deposition of colloidal layers and subsequent thermal treatment allows for modifying the hydrophilicity of the surface of a material. In the present work, wood-based colloidal inks are applied by spray deposition on spray-deposited porous cellulose nanofibrils (CNF) films. The surface modification by thermal annealing of the fabricated colloid-cellulose hybrid thin films is investigated in terms of layering and hydrophobicity. The polymer colloids in the inks are core−shell nanoparticles with different sizes and glass transition temperatures (T g ), thus enabling different and low thermal treatment temperatures. The ratio between the core polymers, poly(sobrerol methacrylate) (PSobMA), and poly(-butyl methacrylate) (PBMA) determines the T g and hence allows for tailoring of the T g . The layer formation of the colloidal inks on the porous CNF layer depends on the imbibition properties of the CNF layer which is determined by their morphology. The water adhesion of the CNF layer decreases due to the deposition of the colloids and thermal treatment except for the colloids with a size smaller than the void size of the porous CNF film. In this case, the colloids are imbibed into the CNF layer when T g of the colloids is reached and the polymer chains transit in a mobile phase. Tailored aggregate and nanoscale-embedded hybrid structures are achieved depending on the colloid properties. The imbibition of these colloids into the porous CNF films is verified with grazing incidence small-angle X-ray scattering. This study shows a route for tuning the nanoscale structure and macroscopic physicochemical properties useful for anticounterfeiting paper.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Poly(sobrerol methacrylate) Colloidal Inks Sprayed onto Cellulose Nanofibril Thin Films for Anticounterfeiting Applications

Harder,

Betker,

Alexakis

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

Anti‐Counterfeiting Application of Persistent Luminescence Materials and Its Research Progress

Zhang,

Wang,

Huo

et al. 2023

Laser & Photonics Reviews

View full text Add to dashboard Cite

Persistent luminescent materials can continue to emit light after stopping excitation, and their stored energy is gradually released during the decay time after persistent emitting, which makes the color and luminance changes in slow decay and plays an important role in protecting information and combating forgery. When combined with other anti‐counterfeiting technologies to form a multi‐modal and multi‐process anti‐counterfeiting design, it perfectly hides the real information and has a broad application prospect in anti‐counterfeiting logo design. A brief overview of the design of three different persistent luminescence‐based anti‐counterfeiting applications in unimodality to achieve information encryption in the time dimension. The energy stored in the trap is studied to be released by different physical stimuli and applied to stimulus‐like responsive persistent luminescent materials, and the design of persistent luminescence anti‐counterfeiting applications based on many different processes in dual‐modality, obtaining the dynamic anti‐counterfeiting effect of multiple processes in multiple modes. This work reviews the research background of persistent luminescent materials in the field of anti‐counterfeiting in recent years, compares the important breakthrough progress of persistent luminescent materials applied to anti‐counterfeiting research, and finally puts forward the current problems, future challenges, and development directions.

show abstract

Exploring the photo-physical characteristics of transparent, flexible, and green emissive La2CaZnO5:Er3+ nanophosphor encapsulated in PVA/CS films: Applications in anti-counterfeiting, long-term preservation of latent fingerprints, and multi-stimuli responsive shape memory behaviour

Navya,

Krushna,

Sharma

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Facile and eco-friendly PVA nanocomposites as a photo-luminescent: Anti-counterfeiting, LED and wettability applications

Cited by 6 publications

References 48 publications

Poly(sobrerol methacrylate) Colloidal Inks Sprayed onto Cellulose Nanofibril Thin Films for Anticounterfeiting Applications

Poly(sobrerol methacrylate) Colloidal Inks Sprayed onto Cellulose Nanofibril Thin Films for Anticounterfeiting Applications

Anti‐Counterfeiting Application of Persistent Luminescence Materials and Its Research Progress

Exploring the photo-physical characteristics of transparent, flexible, and green emissive La2CaZnO5:Er3+ nanophosphor encapsulated in PVA/CS films: Applications in anti-counterfeiting, long-term preservation of latent fingerprints, and multi-stimuli responsive shape memory behaviour

Contact Info

Product

Resources

About