Surface modification of polycarbonate using the light-activated chlorine dioxide radical

Jia, Yankun; Asahara, Haruyasu; Hsu, Yu‐I; Asoh, Taka‐Aki; Uyama, Hiroshi

doi:10.1016/j.apsusc.2020.147202

Cited by 18 publications

(10 citation statements)

References 37 publications

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“…The commercial film's contact angle (Figure 8(a)) is 60.56 , which is smaller than that of pure PC film (96.11 ) and all the PC composite films prepared in this study. The contact angle of pure PC was consistent with some reported literatures, 48 and the as-prepared PC films show better hydrophobicity than the commercial product.…”

Section: Contact Anglesupporting

confidence: 89%

Flexible transparent projection screen of polycarbonate matrix integrated with functionalized alumina particles

Gong

Liu

et al. 2021

J of Applied Polymer Sci

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Solution blending approach was introduced to prepare flexible Polycarbonate (PC)-based composited films with excellent transparent projection performance. After modified by an aluminate coupling agent DL-411(ACA-1), alumina (Al 2 O 3 ) possesses improved dispersity. There may form oxygen bridge between aluminum atoms on Al 2 O 3 and ACA-1. With the long aliphatic chain directing outwards, the compatibility between PC and modified Al 2 O 3 was significantly improved. The dispersion of Al 2 O 3 particles in PC was therewith promoted. After vacuum drying, well-blended mixtures were developed and PC films containing Al 2 O 3 clusters can be prepared. The composite films have good light transmission and diffuse reflection effects. When Al 2 O 3 /PC mass ratio is beneath 0.2, the composited films possess excellent transparency comparable with pure PC film. The diffuse reflection performance of PC composite films is gradually enhanced with the increase of Al 2 O 3 content. When Al 2 O 3 / PC ratio attains 0.1, the visible light reflectance amounts 15%, which can even exceed 30% with the ratio reaches 0.5. The composite films show improved resistance to UV irradiation as the visible light reflectance and transparency are comparable to un-radiated samples. The hydrophobicity of composite films with a certain Al 2 O 3 amount increases, which brings forth good anti-moisture property for these transparent projection screen films. K E Y W O R D S composites, optical and photovoltaic applications, optical properties, polycarbonates, synthesis and processing techniques

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Section: Contact Anglesupporting

confidence: 89%

Flexible transparent projection screen of polycarbonate matrix integrated with functionalized alumina particles

Gong

Liu

et al. 2021

J of Applied Polymer Sci

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“…Each measurement was performed three times and an average was calculated. The separation efficiency (E) of the PDMS-pCA@CNWF for various mixtures was calculated using Equation (3) [ 33 ]:

where

and

represent the weight of the oil before and after separation, respectively.…”

Section: Methodsmentioning

confidence: 99%

Superhydrophobic PDMS-pCA@CNWF Composite with UV-Resistant and Self-Cleaning Properties for Oil/Water Separation

2022

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Oil separation is crucial for avoiding environmental pollution originating from industrial wastewater and oil spillage; therefore, it is essential to develop techniques for oil separation. Herein, a new membrane with superhydrophilicity was synthesized by a facile, green, and low-cost method. First, cellulose non-woven fabric (CNWF) was modified by poly (catechin) (pCA), which has good antioxidant and antibacterial activities, to make it unaffected by ultraviolet light and to improve the stability of the structure. Then, hydrolyzed polydimethylsiloxane (PDMS) was coated on the pCA@CNWF surface via chemical bonding to make the composite hydrophobic. This durable superhydrophobic fabric can be used to separate various oil/water mixtures by gravity-driven forces with high separation efficiency (over 98.9%). Additionally, the PDMS-pCA@CNWF possesses the advantages of flexibility, high efficiency, and an outstanding self-cleaning performance, and demonstrates significant potential for applications in various environments, even under various harsh conditions, which make it very promising for the treatment of oil pollution in practical applications.

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“…• Transparent • Heat resistant up to 140 °C [52] • Acid resistance [51] • Naturally hydrophilic surface [65] • Surface modification [66] Disadvantage:…”

Section: Resolution Of Direct 3d Printed Microfluidic Channelsmentioning

confidence: 99%

Direct 3D printed biocompatible microfluidics: assessment of human mesenchymal stem cell differentiation and cytotoxic drug screening in a dynamic culture system

2022

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Background In vivo-mimicking conditions are critical in in vitro cell analysis to obtain clinically relevant results. The required conditions, comparable to those prevalent in nature, can be provided by microfluidic dynamic cell cultures. Microfluidics can be used to fabricate and test the functionality and biocompatibility of newly developed nanosystems or to apply micro- and nanoelectromechanical systems embedded in a microfluidic system. However, the use of microfluidic systems is often hampered by their accessibility, acquisition cost, or customization, especially for scientists whose primary research focus is not microfluidics. Results Here we present a method for 3D printing that can be applied without special prior knowledge and sophisticated equipment to produce various ready-to-use microfluidic components with a size of 100 µm. Compared to other available methods, 3D printing using fused deposition modeling (FDM) offers several advantages, such as time-reduction and avoidance of sophisticated equipment (e.g., photolithography), as well as excellent biocompatibility and avoidance of toxic, leaching chemicals or post-processing (e.g., stereolithography). We further demonstrate the ease of use of the method for two relevant applications: a cytotoxicity screening system and an osteoblastic differentiation assay. To our knowledge, this is the first time an application including treatment, long-term cell culture and analysis on one chip has been demonstrated in a directly 3D-printed microfluidic chip. Conclusion The direct 3D printing method is tested and validated for various microfluidic components that can be combined on a chip depending on the specific requirements of the experiment. The ease of use and production opens up the potential of microfluidics to a wide range of users, especially in biomedical research. Our demonstration of its use as a cytotoxicity screening system and as an assay for osteoblastic differentiation shows the methods potential in the development of novel biomedical applications. With the presented method, we aim to disseminate microfluidics as a standard method in biomedical research, thus improving the reproducibility and transferability of results to clinical applications. Graphical Abstract

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Surface modification of polycarbonate using the light-activated chlorine dioxide radical

Cited by 18 publications

References 37 publications

Flexible transparent projection screen of polycarbonate matrix integrated with functionalized alumina particles

Flexible transparent projection screen of polycarbonate matrix integrated with functionalized alumina particles

Superhydrophobic PDMS-pCA@CNWF Composite with UV-Resistant and Self-Cleaning Properties for Oil/Water Separation

Direct 3D printed biocompatible microfluidics: assessment of human mesenchymal stem cell differentiation and cytotoxic drug screening in a dynamic culture system

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