Effect of Surface Coating of CNC and CNC/Starch on Surface Properties and Barrier Properties

2019 ◽  
Vol 51 (1) ◽  
pp. 64-71
Author(s):  
Seung-Yeop Yang ◽  
Kyoung-Mo Jeong ◽  
Jong-Myoung Won ◽  
Yong-Kyu Lee
Keyword(s):  
Surface Properties ◽  
Surface Coating ◽  
Barrier Properties ◽  
Effect Of Surface

Effect of surface properties and polymer chain length on polymer adsorption in solution

2021 ◽  
Vol 155 (3) ◽  
pp. 034701
Author(s):  
Emily Y. Lin ◽  
Amalie L. Frischknecht ◽  
Karen I. Winey ◽  
Robert A. Riggleman
Keyword(s):  
Surface Properties ◽  
Chain Length ◽  
Polymer Chain ◽  
Polymer Adsorption ◽  
Effect Of Surface

Effect of Surface Modification of Multiwall Carbon Nanotubes on their Electrical and Surface Properties

2010 ◽  
Vol 636-637 ◽  
pp. 676-681 ◽  
Author(s):  
M. Omastová ◽  
M. Mičušík ◽  
Pavol Fedorko ◽  
M.M. Chehimi ◽  
J. Pionteck
Keyword(s):  
Carbon Nanotubes ◽  
Surface Properties ◽  
Photoelectron Spectroscopy ◽  
Cetyltrimethylammonium Bromide ◽  
Multiwall Carbon Nanotubes ◽  
Dodecylbenzenesulfonic Acid ◽  
Molar Ratios ◽  
Electrical Conductivities ◽  
Multiwall Carbon ◽  
Effect Of Surface

The surface of multiwall carbon nanotubes (CNT) was modified by non-covalent approach. Various types of surfactants, an anionic surfactant - dodecylbenzenesulfonic acid, an cationic surfactant - cetyltrimethylammonium bromide and their combination with different molar ratios were used for modification. Different power of ultrasound, 64 or 400 W was used to evaluate its influence on the properties of prepared composites. The electrical conductivities of unmodified CNT, particles treated by ultrasound, and CNT modified with surfactants were measured. The surface properties of modified particles were determined by X-ray photoelectron spectroscopy and scanning electron microscopy. Thermogravimetric analysis was used to confirm the presence and to evaluate the quantity of surfactants in the modified CNT.

Effect of Surface Morphology and Microstructure on Powdering Resistance Performance of GA Coatings with Different Aluminum Contents

2014 ◽  
Vol 940 ◽  
pp. 41-45
Author(s):  
Xun Hua Yuan ◽  
Chun Yu Qi ◽  
Qi Fu Zhang
Keyword(s):  
Surface Morphology ◽  
Surface Coating ◽  
Steel Sheet ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inhibition Effect ◽  
Al Content ◽  
Resistance Performance ◽  
Galvannealed Steel ◽  
Effect Of Surface

The surface morphology and microstructure of galvannealed steel sheet (GA) coatings prepared at different galvannealing parameters were analyzed by X-ray diffraction and SEM, and powdering amount of GA coating was investigated by the double-Olsen powdering tester. The results show that when the Al contents below 0.16 wt%, the Ra of GA coating surface was measured namely below 1.0 μm, and powdering amount of GA coating was below 30 mg/m2, it is within a reasonable value required by automotive makers. After that with the Al contents increased in zinc liquid the amount of powdering increased, this means that the powdering resistance performance of GA coating not only depended on the iron content in the coating, but depended on the roughness profiles of the surface coating. When the galvanizing coating with 0.22 wt% Al content and galvannealing at 500 °C, with the inhibition effect of Fe2Al5Znxinhibit layer, the thickness of δ1k-phase was different in the GA coating, which deteriorated the powdering resistance performance of GA coating.

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