Plasma-assisted growth of polyethylene fractal nano-islands on polyethylene oxide films: Impact of film confinement and glassy dynamics on fractal morphologies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10403927" target="_blank" >RIV/00216208:11320/19:10403927 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.4F03Oqq88" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.4F03Oqq88</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2019.05.287" target="_blank" >10.1016/j.apsusc.2019.05.287</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Plasma-assisted growth of polyethylene fractal nano-islands on polyethylene oxide films: Impact of film confinement and glassy dynamics on fractal morphologies

Popis výsledku v původním jazyce

Plasma-assisted vapor-phase deposition of (-CH2-)(100) macromolecules is performed onto the surface of pre-deposited polyethylene oxide (PEO). It leads to the formation of two-dimensional 7 nm thick polyethylene (PE) islands of the ramified fractal or ordered dendrite shape. AFM-infrared nanospectroscopy confirms the phase separation whereas complementary specific heat nanocalorimetry indicates that the crossover from one island shape to another is related to glassy dynamics in underlying PEO. Segmental dynamics is found to be controlled by the thickness of PEO and it manifests in the development of star-shaped PE dendrites on ultrathin (&lt; 30 nm, strongly-confined) PEO. For thicker (similar to 100 nm, weakly-confined) PEO, the PE islands grow close to a diffusion-limited aggregation regime. Otherwise, segmental mobility in PEO can be controlled by cross-linking which is enhanced under higher discharge power. The results provide a new physical insight into solvent-free macromolecular diffusion at vacuum/polymer interface and may stimulate the vacuum-compatible development of new polymer-based devices.

Název v anglickém jazyce

Plasma-assisted growth of polyethylene fractal nano-islands on polyethylene oxide films: Impact of film confinement and glassy dynamics on fractal morphologies

Popis výsledku anglicky

Plasma-assisted vapor-phase deposition of (-CH2-)(100) macromolecules is performed onto the surface of pre-deposited polyethylene oxide (PEO). It leads to the formation of two-dimensional 7 nm thick polyethylene (PE) islands of the ramified fractal or ordered dendrite shape. AFM-infrared nanospectroscopy confirms the phase separation whereas complementary specific heat nanocalorimetry indicates that the crossover from one island shape to another is related to glassy dynamics in underlying PEO. Segmental dynamics is found to be controlled by the thickness of PEO and it manifests in the development of star-shaped PE dendrites on ultrathin (&lt; 30 nm, strongly-confined) PEO. For thicker (similar to 100 nm, weakly-confined) PEO, the PE islands grow close to a diffusion-limited aggregation regime. Otherwise, segmental mobility in PEO can be controlled by cross-linking which is enhanced under higher discharge power. The results provide a new physical insight into solvent-free macromolecular diffusion at vacuum/polymer interface and may stimulate the vacuum-compatible development of new polymer-based devices.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA17-12994S" target="_blank" >GA17-12994S: Multikomponentní tenké vrstvy plazmových polymerů s nano-architekturou</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Surface Science

ISSN

0169-4332

e-ISSN

—

Svazek periodika

489

Číslo periodika v rámci svazku

září

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

55-65

Kód UT WoS článku

000474530600006

EID výsledku v databázi Scopus

2-s2.0-85067041799