Name: the evolution of silica nanoparticle-polyester coatings on surfaces exposed to sunlight
Uploaded: 2016-10-11T14:00:00
Description: Watch this Scientific Journal Video about The Evolution of Silica Nanoparticle-polyester Coatings on Surfaces Exposed to Sunlight at JoVE.com

Funding from the Australian Research Council Industrial Transformation Research Hubs Scheme (Project Number IH130100017) is gratefully acknowledged. Authors gratefully acknowledge the RMIT Microscopy and Microanalysis Facility (RMMF) for providing access to the characterisation instruments. This research was also undertaken on the Infrared Microscopectroscopy beamline at the Australian Synchrotron, Victoria, Australia.

<html> 1. 철강 샘플 <ol><li> 상용 공급 업체에서 1mm 두께의 강철 샘플을 얻습니다. 참고 : 시료는 실리카 나노 입자로 코팅 된 폴리 에스테르 또는 폴리 에스테르 중 코팅 하였다. </li><li> 록 햄프 턴, 퀸즐랜드, 호주에서 햇빛에 샘플을 노출 : 총 5 년 동안 일 년 다섯 년 간격 후 샘플을 수집합니다. 홀 펀칭기를 사용하여 1cm 직경의 원형 디스크에 샘플 패널을 잘라. </li><li> , 특성화 ?...

<ol>
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K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+influence+of+nano-scale+surface+roughness+on+bacterial+adhesion+to+ultrafine-grained+titanium.">The influence of nano-scale surface roughness on bacterial adhesion to ultrafine-grained titanium.</a> Biomaterials. 31 (13), 3674-3683 (2010).</li><li>Ne&#269;as, D., Klapetek, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gwyddion:+An+open-source+software+for+SPM+data+analysis.">Gwyddion: An open-source software for SPM data analysis.</a> Cent. Eur. J. Phys. 10 (1), 181-188 (2012).</li><li>Crawford, R. J., Webb, H. K., Truong, V. K., Hasan, J., Ivanova, E. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Surface+topographical+factors+influencing+bacterial+attachment.">Surface topographical factors influencing bacterial attachment.</a> Adv. Colloid Interface Sci. 179-182, 142-149 (2012).</li><li>Allen, N. S., Edge, M., Mohammadian, M., Jones, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Physicochemical+aspects+of+the+environmental+degradation+of+poly(ethylene+terephthalate).">Physicochemical aspects of the environmental degradation of poly(ethylene terephthalate).</a> Polym. Degrad. Stab. 43 (2), 229-237 (1994).</li><li>Newman, C. R., Forciniti, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Modeling+the+ultraviolet+photodegradation+of+rigid+polyurethane+foams.">Modeling the ultraviolet photodegradation of rigid polyurethane foams.</a> Ind. Eng. Chem. Res. 40 (15), 3346-3352 (2001).</li><li>Ivanova, E. P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Vibrio+fischeri+and+Escherichia+coli+adhesion+tendencies+towards+photolithographically+modified+nanosmooth+poly+(tert-butyl+methacrylate)+polymer+surfaces.">Vibrio fischeri and Escherichia coli adhesion tendencies towards photolithographically modified nanosmooth poly (tert-butyl methacrylate) polymer surfaces.</a> Nanotechnol. Sci. Appl. 1, 33-44 (2008).</li><li>Biggs, S., Lukey, C. A., Spinks, G. M., Yau, S. 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폴리 에스터 코팅은 널리 의한 수분 및 오염 물질의 축적으로 코팅되지 않은 표면에 발생 부식 강철 하층을 보호하기 위해 사용되어왔다. 부식 강재를 보호 할 수 에스테르 코팅의 적용; 그들은 습한 조건에서 자외선의 높은 수준에 노출되는 경우 열대 기후에서 발생 그러나 이러한 코팅의 장기적인 효과는 손상된다. 실리카 나노 입자는 이러한 환경에서 이러한 코팅의 견고성이 실리카 함유 도?...

Environmental corrosion of metals in the environment is both prevalent and costly1-3. A recent study conducted by the Australasian Corrosion Association (ACA) reported that corrosion of metals resulted in a yearly cost of $982 million, which was directly associated with the degradation of assets and infrastructure through metallic corrosion within the water industry4. From an international perspective, the World Corrosion Organization estimated that metallic corrosion was responsible for a direct cost of $3.3 trillion, over 3% of the world's GDP5. The process of galvanizing as a corrosion preventative method has been widely used to increase the lifespan of steel material6. In humid and subtropical climates, however, water tends to condense into small pockets or grooves within the surface of the galvanized steel, leading to the acceleration of corrosion rates through pit corrosion7,8. Thermosetting polymer coatings based on polyesters have been developed to coat the galvanized steel substrata increasing their ability to withstand humid weathering conditions for items such as satellite dishes, garden furniture, air-conditioning units or agricultural construction equipment9-11. Unfortunately polymer coatings on steel surfaces have been found to be considerably adversely affected by the presence of high levels of ultraviolet (uv) radiation12-14. Coatings comprised of silica nanoparticles (SiO2) spread over a polymer layer have been widely used with a view to increasing their corrosion-, wear-, tear- and degradation-resistance15,16. The tendency of the protective polymeric coatings to form pores and cracks can be reduced by incorporating nanoparticles (NPs), which contribute to the passive obstruction of corrosion initiation17,18. Also, the mechanical stability of the protective polymeric layer can be improved by NPs inclusion. However, these coatings act as passive physical barriers and, in comparison to the galvanization approach, cannot inhibit corrosion propagation actively.
An in-depth understanding of the effect that high-levels of ultraviolet light exposure under humid conditions upon these metal coatings is yet to be obtained. In this paper, a wide range of surface analytical techniques, including X-ray photoelectron spectroscopy (XPS), attenuated total reflection infrared micro-spectroscopy (ATR IR), contact angle goniometry, optical profiling and atomic force microscopy (AFM) will be employed to examine the changes in the surface of steel coatings prepared from polyester- and silica nanoparticle-coated polyester (silica nanoparticles/polyester) after exposure to sunlight. Furthermore, the aim of this work is to give a concise, practical overview of the overall characterization techniques to examine weathered samples.

<table border="0" cellpadding="0" cellspacing="0" width="1044">
	<colgroup>
		<col />
		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="41">
			<td height="41" style="height:41px;width:263px;">polyester-coated steel 
			silica nanoparticle-polyester coated steel substrata</td>
			<td style="width:231px;">BlueScope Steel</td>
			<td style="width:163px;"></td>
			<td style="width:387px;">Samples provided by company</td>
		</tr>
		<tr height="26">
			<td height="26" style="height:26px;width:263px;">Millipore PetriSlideTM&#160;</td>
			<td style="width:231px;">Fisher Scientific</td>
			<td style="width:163px;">PDMA04700</td>
			<td>Storing samples</td>
		</tr>
		<tr height="49">
			<td height="49" style="height:49px;width:263px;">Thermo ScientificTM K-alpha 
			X-ray Photoelectron Spectrometer</td>
			<td>Thermo Fisher Scientific, Inc.</td>
			<td>IQLAADGAAFFACVMAHV</td>
			<td>Acquire XPS spectra</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:263px;">Avantage Data System</td>
			<td>Thermo Fisher Scientific, Inc.</td>
			<td>IQLAADGACKFAKRMAVI</td>
			<td>Analyse XPS spectra</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">A Bruker Hyperion 2000 microscope&#160;</td>
			<td style="width:231px;">Bruker Corporation</td>
			<td style="width:163px;"></td>
			<td>Synchrotron integrated instrument</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Bruker Opus v. 7.2</td>
			<td style="width:231px;">Bruker Corporation</td>
			<td style="width:163px;"></td>
			<td>ATR-IR analysis software</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:263px;">Contact angle goniometer, FTA1000c</td>
			<td>First Ten &#197;ngstroms Inc., VA, USA</td>
			<td style="width:163px;"></td>
			<td>Measuring the wettability of surfaces</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:263px;">FTA v. 2.0</td>
			<td>First Ten &#197;ngstroms Inc., VA, USA</td>
			<td style="width:163px;"></td>
			<td>Anaylyzing water contact angle</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Optical profiler, Wyko NT1100&#160;</td>
			<td>Bruker Corporation</td>
			<td style="width:163px;"></td>
			<td>Measure surface topography</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Innova atomic force microscope&#160;</td>
			<td>Bruker Corporation</td>
			<td style="width:163px;"></td>
			<td>Measure surface topography</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:263px;">Phosphorus doped silicon probes, MPP-31120-10</td>
			<td>Bruker Corporation</td>
			<td style="width:163px;"></td>
			<td>AFM probes</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">Gwyddion software</td>
			<td style="width:231px;">http://gwyddion.net/</td>
			<td style="width:163px;"></td>
			<td>Software used to measure optical profiling and AFM data</td>
		</tr>
	</tbody>
</table>

the evolution of silica nanoparticle-polyester coatings on surfaces exposed to sunlight

금속 표면의 부식 환경에서 유행하고 다른 사람의 사이에 군사, 교통, 항공, 건축, 식품 산업 등 많은 분야에서 큰 관심이다. 폴리 에스테르 및 폴리 에스테르 및 실리카 나노 입자를 모두 포함하는 코팅 (SiO2로 된 NP)가 널리 부식 스틸 하층을 보호하기 위해 사용되어왔다. 본 연구에서는 X 레이 광전자 분광법은 감쇠 전반사 적외 마이크로 분광법 접촉각 측정 광 프로파일 및 원자력 현미경 햇빛에 노출 마이크로 및 나노 크기의 무결성의 변화가 발생할 수 있는지에 대한 통찰을 제공하기 위해 이용 코팅의. 표면 미세 지형에 큰 변화는 프로필 로메 광을 이용하여 검출되지 않았다 그러나, 표면에 나노 유의 한 변화는 원자력 현미경을 사용하여 검출 하였다. X 선 광전자 분광법 분석 감쇠 전반사 적외 마이크로분광 분석 데이터는 에스테르 기의 열화 COO · C · 2 -H, -O · -CO · 라디칼을 형성하도록 자외선에 노광에 의해 발생하였습니다. 분해 과정에서, CO 및 CO2를 또한 제조 하였다.

<html> 하나 또는 5 년 동안 햇빛에 노출 실시한 도장 강판 샘플을 수집하고, 접촉각 측정이 노출면의 표면 소수성의 변화를 초래했는지를 결정하기 위해 수행되었다 (도 2 ). <img alt="그림 2" src="/files/ftp_upload/54309/54309fig2.jpg" /> 폴리 실리카 나노 입자 / 폴리 에스테르 코팅 (실리카 / 폴리 에스테르) 광선에 노출 5 년과 표면도 2 습윤?...

Watch this Scientific Journal Video about The Evolution of Silica Nanoparticle-polyester Coatings on Surfaces Exposed to Sunlight at JoVE.com

The Evolution of Silica Nanoparticle-polyester Coatings on Surfaces Exposed to Sunlight

표면의 두 가지 유형의 실리카 나노 입자의 층으로 코팅 된 폴리 에스테르 코팅 된 스틸과 폴리 에스테르가 연구되었다. 양면은 표면의 화학 및 나노 토포 그래피에 상당한 변화를 야기하는 것으로하고 햇빛에 노출시켰다.

햇빛에 노출 된 표면에 실리카 나노 입자 - 폴리 에스테르 코팅의 진화

Corrosion of metallic surfaces is prevalent in the environment and is of great concern in many areas, including the military, transport, aviation, ...

Research

JoVE Journal

Engineering

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

초기 플라즈마 진화의 조사는 극단으로 짧은 레이저 펄스에 의해 유도된

Early plasma is generated owing to high intensity laser irradiation of target and the subsequent target material ionization. Its dynamics plays a ...

연구

공학

Fabrication of Silica Ultra High Quality Factor Microresonators

실리카 초고 품질 팩터 Microresonators의 제작

Whispering gallery resonant cavities confine light in circular orbits at their periphery.1-2 The photon storage lifetime in the cavity, quantified by the ...

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells

고체 산화물 연료 전지의 전극 표면을 탐색 및 매핑

Solid oxide fuel cells (SOFCs) are potentially the most efficient and cost-effective solution to utilization of a wide variety of fuels beyond hydrogen ...

Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition

의 제작 펄스 레이저 증착에 의해 투명 실시 산화물 나노 설계

Nanosecond Pulsed  Laser Deposition (PLD) in the presence of a background gas allows the deposition  of metal oxides with tunable morphology, structure, ...

High-speed Particle Image Velocimetry Near Surfaces

Multi-dimensional and transient flows play a key role in many areas of science, engineering, and health sciences but are often not well understood. The ...

Monolayer Contact Doping of Silicon Surfaces and Nanowires Using Organophosphorus Compounds

유기 화합물을 사용하여 실리콘 표면과 나노 와이어의 단층 연락 도핑

Monolayer Contact Doping (MLCD) is a simple method for doping of surfaces and nanostructures1. MLCD results in the formation of highly controlled, ultra ...

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

유로퓸 킬레이트 발광 코팅을 사용하여 고해상도 열 마이크로 이미징

Micro-electronic devices often undergo significant self-heating when biased to their typical operating conditions. This paper describes a convenient ...

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

사라져가는 필드를 기반 Photoacoustics : 광학 특성 평가 표면에

Here, we present a protocol to estimate material and surface optical properties using the photoacoustic effect combined with total internal reflection. ...

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns

하이브리드 수화제 패턴과 원통 표면에 풀 비등 열전달 향상

In this study, pool-boiling heat-transfer experiments were performed to investigate the effect of the number of interlines and the orientation of the ...

Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications

반 장식 응용 프로그램 Superhydrophobic 금속 표면의 제조

Several ways to produce superhydrophobic metal surfaces are presented in this work. Aluminum was chosen as the metal substrate due to its wide use in ...