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Wielowarstwowe filmy polimerowe otrzymywane metodą LbL - warstwa po warstwie (ang. layer-bylayer) : rozwój i zastosowanie

Wójcik A.J.

Wiadomości Chemiczne

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2014

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[Z] 68, 9-10

897--918

EN

The production of varied materials with nanoscale precision requires both suitable components and a right method. In the past two decades, layer-by-layer (LbL) assembly has been proven to be a convenient and versatile technique for fabrication of functional films. The LbL method enables obtaining systems composed of a few or even hundreds layers of beforehand chosen substances, which are characterized by a thickness ranging from nano- to micrometers. The building blocks of LbL assembly include, but are not limited to, synthetic polymers, polymeric microgels, biomacromolecules, (nano)particles, dendritic molecules, and complexes of these species [1]. This method involves simple alternative adsorption of oppositely charged polyelectrolytes on supporting materials [2]. The LbL assembly can be driven by multiple weak interactions, including electrostatic interactions, hydrogen-bonds, halogen-bonds, coordination bonds, charge-transfer interactions, biospecific interactions (e.g., sugar–lectin interactions), cation–dipole interactions, and the combined interaction of the above forces, etc. The multilayered composite films fabricated by means of the LbL technique have generated much interest among researchers worldwide due to the simplicity of the whole process by which they are produced and their numerous applications such as antireflection coatings, superhydrophobic surfaces, electrochromic devices, biosensors, cell adhesion or resistance coatings, drug delivery systems, proton exchange membranes, solar-energy conversion devices, and separation membranes [3]. In this review the evolution of the LbL method and the applications of the multilayered polymer films were discussed.

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Cienkie wielowarstwowe powłoki przewodzące zawierające tlenek grafenu/grafen

Kruk T.

LAB Laboratoria, Aparatura, Badania

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2012

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R. 17, nr 4

12-17

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Application of the layer-by-layer deposition technique to improve the hydrophilic properties of polypropylene nonwoven

Zielińska D., Halacheva S.

Techniczne Wyroby Włókiennicze

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2011

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Nr 1/2

16-20

EN

A new synthetic well-defined comb-like poly(ethylene imine) polymer (bPEI) was deposited onto polypropylene (PP) nonwoven using a layer-by-layer deposition technique (LBL). Such modification significantly changes the hydrophilic properties of the resulting material. FTIR analysis has been performed in order to confirm the modification of the PP nonwoven. It was observed that the surface wettability, capillarity and moisture sorption were substantially improved.

PL

Metoda layer-by-layer (LBL) pozwala na nakładanie cienkich warstw na płaskie wyroby włókiennicze. W wyniku takiej modyfikacji ulegają zmianie właściwości hydrofilowe. Nakładano rozgałęzioną poli(etylenoiminę) (bPEI) na włókninę polipropylenową (PP). Za pomocą spektroskopii w podczerwieni potwierdzono nałożenie warstwy na włókninę. Stwierdzono, że znacząco poprawił się zarówno kąt zwilżania, włoskowatość jak i sorpcja wilgoci.