scholarly journals Development of a Transparent Coating to Enhance Self-Cleaning Capability and Strength in Conventional Paper

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Xiangdong Ye ◽  
Junwen Hou ◽  
Xuerui Yan ◽  
Xiaojun Wu
Keyword(s):  
Tensile Strength ◽  
Double Layer ◽  
Composite Layer ◽  
Bottom Layer ◽  
Oil Contamination ◽  
Coating Structure ◽  
Paper Making ◽  
Transparent Coating ◽  
Promising Solution ◽  
Self Cleaning

Paper is one of the most widely used materials, due to its application in books, packaging, and office supplies. However, conventional paper has many disadvantages, such as low tensile strength, poor resistance to water and oil contamination, lack of antigraffiti capability, and easily deformed by moisture. Therefore, we proposed a double-layer protective coating that consists of a polyurethane (PU) bottom layer, to enhance tensile strength, and a top polydimethylsiloxane (PDMS) composite layer to enable antigraffiti and contamination-resistant capabilities. In the study, a double-layer coating was applied to conventional paper, using a simple two-step spraying method. The results showed that the prepared coating structure exhibited outstanding self-cleaning characteristics with respect to both water and oil contamination and adequately demonstrated antigraffiti capability. Moreover, the coating maintained superhydrophobic and oil-stain resistance after four months of outdoor storage. Finally, the tensile strength of the coated paper was 6.3 times as high as that of the original paper, making this coating structure a promising solution to the problems that limit paper from being more widely utilized in commercial and consumer application.

Bacterial Cellulose Reinforced Flax Fibre Composites: Effect of Nanocellulose Loading on Composite Properties

2015 ◽  
Vol 825-826 ◽  
pp. 1063-1067
Author(s):  
Marta Fortea-Verdejo ◽  
Elias Bumbaris ◽  
Koon Yang Lee ◽  
Alexander Bismarck
Keyword(s):  
Tensile Strength ◽  
Bacterial Cellulose ◽  
Flax Fibre ◽  
The Other ◽  
Cellulose Content ◽  
Polypropylene Composites ◽  
Flax Fibres ◽  
Paper Making ◽  
Fibre Composites ◽  
Composite Properties

Loose hierarchical flax fibres/polypropylene composites were manufactured in a simple way based on a paper-making process in order to include nanocellulose and allow the hornification of the nanofibres in a controlled manner. The effect of flax fibre content on the flax/polypropylene composites and the influence of nanocellulose on the properties of these composites are discussed. By increasing the flax content a slight decrease of the tensile strength and an increase of the Young´s modulus were observed. On the other hand, no significant effect was noticed when increasing the bacterial cellulose content in the composites.

Hierarchical flower like double-layer superhydrophobic films fabricated on AZ31 for corrosion protection and self-cleaning

2017 ◽  
Vol 41 (21) ◽  
pp. 12767-12776 ◽  
Author(s):  
Cuiqing Wu ◽  
Qi Liu ◽  
Jingyuan Liu ◽  
Rongrong Chen ◽  
Kazunobu Takahashi ◽  
...  
Keyword(s):  
Contact Angle ◽  
Corrosion Protection ◽  
Double Layer ◽  
Self Assembly ◽  
Self Cleaning

The designed sample is prepared by self-assembly of octadecyltrichlorosilane and deposition of ferric stearate, and the contact angle is 160°.

PCL Based CIP-Loaded Double-Layer Films Deposited by Low-Electron Beam Dispersion Method and its Antibacterial Properties

2020 ◽  
Vol 22 (4) ◽  
pp. 255
Author(s):  
Qin Xu ◽  
Beibei Li ◽  
Zhengwei Xu ◽  
Xiaohong Jiang ◽  
M.A. Yarmolenko ◽  
...  
Keyword(s):  
Electron Beam ◽  
Double Layer ◽  
Slow Release ◽  
Antibacterial Properties ◽  
Bottom Layer ◽  
Release Time ◽  
Release Behavior ◽  
Dispersion Method ◽  
Comprehensive Performance ◽  
Sealing Layer

In this paper, low-electron beam dispersion (EBD) method is used to prepare a kind of double-layer films on different substrates. The bottom layer is a mechanically stirred mixture of the degradable polycaprolactone (PCL) and ciprofloxacin (CIP), and the top layer is polyurethane (PU) film. The molecular structure, chemical composition and morphology of the double-layer films were investigated by FTIR, XPS and SEM. The results showed that the surfaces of the double-layer films are uniform and the thicknesses can reach micron level. In addition, the two layers are well bonded. Then the films were sliced and immersed in PBS solution, and the time-dependent variable was used to analyze the kinetic slow-release behavior of CIP in the double-layer films by agar diffusion antibacterial experiments. It can be seen that sustained release time of CIP in the double-layer films can be up to 7 days, which is due to fact that the upper PU film working as a sealing layer helps to realize the drug slow-release. Based on the above research, the comprehensive performance of the films with the composition of PCL:CIP/PU=1:1/1 is the best.

Transparent and abrasion-resistant superhydrophobic coating with robust self-cleaning function in either air or oil

2016 ◽  
Vol 4 (20) ◽  
pp. 7869-7874 ◽  
Author(s):  
Peng Wang ◽  
Mingji Chen ◽  
Huilong Han ◽  
Xiaoliang Fan ◽  
Qing Liu ◽  
...  
Keyword(s):  
Strong Acid ◽  
Oil Contamination ◽  
Superhydrophobic Coating ◽  
Acid Base ◽  
Easy Method ◽  
Self Cleaning

This paper reports an easy method to prepare a transparent superhydrophobic coating which shows a robust resistance to oil contamination, knife-scratch, sandpaper abrasion and strong acid/base attack.

scholarly journals Double layer SiO2–TiO2 sol–gel thin films on glass for antireflection, antifogging, and UV recoverable self-cleaning

2020 ◽  
Vol 59 (25) ◽  
pp. 7720
Author(s):  
F. M. Fardo ◽  
R. S. Ribeiro ◽  
J. A. Strauss ◽  
J. Nardi ◽  
L. C. Ferreira ◽  
...  
Keyword(s):  
Thin Films ◽  
Double Layer ◽  
Sol Gel ◽  
Tio2 Sol ◽  
Self Cleaning

scholarly journals A mechanically robust transparent coating for anti-icing and self-cleaning applications

2018 ◽  
Vol 6 (33) ◽  
pp. 16043-16052 ◽  
Author(s):  
Xinghua Wu ◽  
Zhong Chen
Keyword(s):  
Aerospace Structures ◽  
Transparent Coating ◽  
Self Cleaning ◽  
Transparent Coatings

Mechanically robust, transparent coatings that display very low affinity with ice and various liquids are promising for applications in outdoor facilities and marine and aerospace structures.

Fabrication of bioinspired, self-cleaning, anti-icing, superliquiphilic/phobic titanium using different pathways

2018 ◽  
Vol 377 (2138) ◽  
pp. 20180273 ◽  
Author(s):  
Dev Gurera ◽  
Bharat Bhushan
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Chemical Etching ◽  
Density Ratio ◽  
High Tensile Strength ◽  
Theme Issue ◽  
High Corrosion Resistance ◽  
High Corrosion ◽  
The Common ◽  
Self Cleaning

Titanium is an important material having a high tensile strength-to-density ratio and high corrosion resistance. It has found applications in the aerospace, marine, automotive and biomedical industries. In some of the applications, it is important to have it as a highly liquid repellent, anti-icing and self-cleaning. There have been several attempts to make titanium superliquiphobic. The common pathways include chemical etching and anodizing. However, important characteristics such as self-cleaning, anti-icing and durability have not been investigated. If any durability data were reported, it was poor. In the current study, various superliquiphilic/phobic surfaces were fabricated using three pathways which include chemical etching, anodizing and nanoparticle-binder coating. Each surface was characterized for wettability, self-cleaning, anti-icing, self-cleaning properties and durability. This article is part of the theme issue ‘Bioinspired materials and surfaces for green science and technology’.

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