scholarly journals Facile Surface Modification of Polyethylene Film via Spray-Assisted Layer-by-Layer Self-Assembly of Graphene Oxide for Oxygen Barrier Properties

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jiwoong Heo ◽  
Moonhyun Choi ◽  
Jinkee Hong
Keyword(s):  
Surface Modification ◽  
Graphene Oxide ◽  
Self Assembly ◽  
Barrier Properties ◽  
Polyethylene Film ◽  
Oxygen Barrier ◽  
Layer By Layer

scholarly journals Direct Patterning and Spontaneous Self-Assembly of Graphene Oxide via Electrohydrodynamic Jet Printing for Energy Storage and Sensing

Micromachines ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 13 ◽  
Author(s):  
Bin Zhang ◽  
Jaehyun Lee ◽  
Mincheol Kim ◽  
Naeeung Lee ◽  
Hyungdong Lee ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Self Assembly ◽  
High Performance ◽  
Three Dimensional ◽  
Chemical Properties ◽  
Layer By Layer ◽  
Energy Storage Devices ◽  
Laminar Structure ◽  
Jet Printing

The macroscopic assembly of two-dimensional materials into a laminar structure has received considerable attention because it improves both the mechanical and chemical properties of the original materials. However, conventional manufacturing methods have certain limitations in that they require a high temperature process, use toxic solvents, and are considerably time consuming. Here, we present a new system for the self-assembly of layer-by-layer (LBL) graphene oxide (GO) via an electrohydrodynamic (EHD) jet printing technique. During printing, the orientation of GO flakes can be controlled by the velocity distribution of liquid jet and electric field-induced alignment spontaneously. Closely-packed GO patterns with an ordered laminar structure can be rapidly realized using an interfacial assembly process on the substrates. The surface roughness and electrical conductivity of the LBL structure were significantly improved compared with conventional dispensing methods. We further applied this technique to fabricate a reduced graphene oxide (r-GO)-based supercapacitor and a three-dimensional (3D) metallic grid hybrid ammonia sensor. We present the EHD-assisted assembly of laminar r-GO structures as a new platform for preparing high-performance energy storage devices and sensors.

Layer contribution model for layer-by-layer self-assembly oxygen barrier film

2017 ◽  
Vol 658 (1) ◽  
pp. 127-130 ◽  
Author(s):  
Su jeong Min ◽  
Seong Yun Lee ◽  
Jun Young Lee ◽  
Sangkug Lee ◽  
Kyung Ho Choi ◽  
...  
Keyword(s):  
Self Assembly ◽  
Oxygen Barrier ◽  
Layer By Layer ◽  
Barrier Film

scholarly journals A study of the barrier properties of polyethylene coated with a nanocellulose/magnetite composite film

2016 ◽  
Vol 81 (5) ◽  
pp. 589-605 ◽  
Author(s):  
Nenad Djordjevic ◽  
Aleksandar Marinkovic ◽  
Jasmina Nikolic ◽  
Sasa Drmanic ◽  
Milica Rancic ◽  
...  
Keyword(s):  
Surface Modification ◽  
Maleic Anhydride ◽  
Hybrid Materials ◽  
Significant Contribution ◽  
Barrier Properties ◽  
Chemical Activity ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Oxygen Barrier ◽  
Magnetite Layer

The morphological, thermal and barrier properties of low-density polyethylene/polycaprolactone-modified nanocellulose hybrid materials were investigated in this paper. Nanonocelulose/magnetite (NC-Fe3O4) nanocomposite and maleic acid functionalized NC/magnetite (NCMA-Fe3O4) nanocomposite were prepared and used as filler at various concentrations (5, 10 and 15 wt. %) in polycaprolactone (PCL) layer. PE was coated with PCL/NC/magnetite layer. The addition of the filler did not unfavorably affect the inherent properties of the polymer, especially its barrier properties. Oxygen permeation measurements show that the oxygen barrier properties of magnetite enriched PCL film were improved due to chemical activity of added material. The highest level of barrier capacity was observed for PE samples coated with PCL based composite with NCMA-Fe3O4 micro/-nanofiller, which implies the significant contribution of nanocellulose surface modification with maleic anhydride residue to improved barrier properties.

Spray-assisted layer-by-layer self-assembly of tertiary-amine-stabilized gold nanoparticles and graphene oxide for efficient CO2 capture

2020 ◽  
Vol 601 ◽  
pp. 117905 ◽  
Author(s):  
Jiwoong Heo ◽  
Moonhyun Choi ◽  
Daheui Choi ◽  
Hyejoong Jeong ◽  
Hyun Young Kim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Co2 Capture ◽  
Tertiary Amine ◽  
Self Assembly ◽  
Layer By Layer
Sign in / Sign up

Export Citation Format

Share Document