Spreading behaviour of aqueous trisiloxane solutions over hydrophobic polymer substrates

Patterning materials on hydrophobic polymer substrates have extensive applications in fabricating flexible devices at low cost, while the low transfer efficiency encumbers its advance. This paper provides a facile route to transfer materials onto hydrophobic polymer substrates with high efficiency by operating in organic solvent atmosphere. Under the assistance of condensed organic solvent layer on the substrate, bovine serum albumin (BSA) are desirably transferred onto untreated hydrophobic polymer substrates, such as poly(dimethylsiloxane) (PDMS), polystyrene (PS), and poly(ethylene terephthalate) (PET) as a proof-of-concept experiment. Moreover, the combination of this method with stepwise contraction and adsorption nanolithography (SCAN) was also demonstrated as an alternative way to further miniaturize patterns prepared by other methods.

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2.45 GHz Patch Antenna Based on Thermoplastic Polymer Substrates

2018 IEEE International RF and Microwave Conference (RFM) ◽

10.1109/rfm.2018.8846493 ◽

2018 ◽

Cited By ~ 1

Author(s):

Nurul Hanani Manab ◽

Elfarizanis Baharudin ◽

Fauziahanim Che Seman ◽

Alyani Ismail

Keyword(s):

Patch Antenna ◽

Thermoplastic Polymer ◽

Polymer Substrates

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Synthesis of fuel bioadditive by esterification of glycerol with acetic acid over hydrophobic polymer-based solid acid

Fuel ◽

10.1016/j.fuel.2021.121175 ◽

2021 ◽

Vol 302 ◽

pp. 121175

Author(s):

Ronglin Mou ◽

Xinji Wang ◽

Ziqing Wang ◽

Daoyou Zhang ◽

Zhili Yin ◽

...

Keyword(s):

Acetic Acid ◽

Solid Acid ◽

Hydrophobic Polymer

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Length-Scale Effects in Hydrophobic Polymer Collapse Transitions

The Journal of Physical Chemistry B ◽

10.1021/acs.jpcb.1c01070 ◽

2021 ◽

Author(s):

Nico F. A. van der Vegt

Keyword(s):

Scale Effects ◽

Length Scale ◽

Polymer Collapse ◽

Hydrophobic Polymer ◽

Collapse Transitions

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Asymmetric water transport in dense leaf cuticles and cuticle-inspired compositionally graded membranes

Nature Communications ◽

10.1038/s41467-021-21500-0 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Aristotelis Kamtsikakis ◽

Johanna Baales ◽

Viktoria V. Zeisler-Diehl ◽

Dimitri Vanhecke ◽

Justin O. Zoppe ◽

...

Keyword(s):

Water Transport ◽

Vascular Plants ◽

Protective Layer ◽

Systematic Investigation ◽

Nanocomposite Membranes ◽

Hydrophobic Polymer ◽

Polyester Matrix ◽

Transpirational Water Loss ◽

Epidermal Cell Wall ◽

Cuticular Layer

AbstractMost of the aerial organs of vascular plants are covered by a protective layer known as the cuticle, the main purpose of which is to limit transpirational water loss. Cuticles consist of an amphiphilic polyester matrix, polar polysaccharides that extend from the underlying epidermal cell wall and become less prominent towards the exterior, and hydrophobic waxes that dominate the surface. Here we report that the polarity gradient caused by this architecture renders the transport of water through astomatous olive and ivy leaf cuticles directional and that the permeation is regulated by the hydration level of the cutin-rich outer cuticular layer. We further report artificial nanocomposite membranes that are inspired by the cuticles’ compositionally graded architecture and consist of hydrophilic cellulose nanocrystals and a hydrophobic polymer. The structure and composition of these cuticle-inspired membranes can easily be varied and this enables a systematic investigation of the water transport mechanism.

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Cell Behavior of Primary Fibroblasts and Osteoblasts on Plasma-Treated Fluorinated Polymer Coated with Honeycomb Polystyrene

Materials ◽

10.3390/ma14040889 ◽

2021 ◽

Vol 14 (4) ◽

pp. 889

Author(s):

Klára Fajstavrová ◽

Silvie Rimpelová ◽

Dominik Fajstavr ◽

Václav Švorčík ◽

Petr Slepička

Keyword(s):

Chemical Properties ◽

Plasma Exposure ◽

Research Teams ◽

Polymer Substrates ◽

Substrate Activation ◽

Physico Chemical ◽

Polystyrene Solution ◽

Primary Fibroblasts ◽

Positive Effect ◽

Cell Adhesion And Proliferation

The development of new biocompatible polymer substrates is still of interest to many research teams. We aimed to combine a plasma treatment of fluorinated ethylene propylene (FEP) substrate with a technique of improved phase separation. Plasma exposure served for substrate activation and modification of surface properties, such as roughness, chemistry, and wettability. The treated FEP substrate was applied for the growth of a honeycomb-like pattern from polystyrene solution. The properties of the pattern strongly depended on the primary plasma exposure of the FEP substrate. The physico-chemical properties such as changes of the surface chemistry, wettability, and morphology of the prepared pattern were determined. The cell response of primary fibroblasts and osteoblasts was studied on a honeycomb pattern. The prepared honeycomb-like pattern from polystyrene showed an increase in cell viability and a positive effect on cell adhesion and proliferation for both primary fibroblasts and osteoblasts.

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Composite proton exchange membranes produced using chitosan and kaolin solvent-free fluid

Journal of Polymer Engineering ◽

10.1515/polyeng-2019-0332 ◽

2020 ◽

Vol 40 (6) ◽

pp. 495-506

Author(s):

Chun-Chun Huang ◽

Syang-Peng Rwei ◽

Yun-Shao Huang ◽

Yao-Chi Shu

Keyword(s):

Direct Methanol Fuel Cells ◽

Composite Membranes ◽

Proton Exchange ◽

Solvent Free ◽

Free Fluid ◽

Exchange Method ◽

Polymer Substrates ◽

Practical Applications ◽

Inorganic Substances ◽

Electrolyte Membranes

AbstractIn this study, composite membranes produced by combining both biopolymer chitosan (CS) and kaolin solvent-free fluid (kaolin-SF) were used as substitutes for the electrolyte membranes in direct-methanol fuel cells. To improve the interfacial morphologies between organic and inorganic substances, kaolin-SF was prepared using the ion exchange method. Subsequently, kaolin-SF of various doping proportions was mixed with CS crosslinked with sulfuric acid to produce thin membranes. The results of heat exhaustion and scanning electron microscope image analysis indicated that kaolin-SF was successfully doped into the CS polymer substrates, and this addition enhanced the thermal stability and mechanical properties of the CS polymer substrates. As long as the concentration of kaolin-SF was below 5 wt.%, the water absorption rate and proton conductivity of the CS/kaolin-SF composite membranes increased along with the kaolin-SF content. These results indicate that CS/kaolin-SF composite membranes are suitable for practical applications.

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